Specimen of a vine with several leaves and dried berries attached, collected by Munson and Hopkins in Bear Cañon, New Mexico, 1889.

Specimen of a Vitis arizonica Engelm plant, collected by Munson and Hopkins in New Mexico, 1889. Text at bottom of page: "Near Albuquerque, N. M."

Specimen of a Vitis arizonica Engelm plant, collected by Munson and Hopkins in New Mexico, 1889. Text at bottom of page: "Vitis Near Albuquerque, N. M. Munson & Hopkins. July 25, 1889."

Specimen of a Vitis arizonica Engelm plant, collected by Munson and Hopkins in New Mexico, 1889. Text at bottom of page: "Bear Cañon, N. M. Munson & Hopkins. July 23, 1889."

Specimen of a Vitis arizonica Engelm plant, collected by Munson and Hopkins in New Mexico, 1889. Text at bottom of page: "Vitis; Bear Cañon N. M. Munson & Hopkins. July 23, 1889."

Specimen of a Vitis arizonica plant, collected by T. V. Munson and Hopkins in New Mexico, 1889. Text at bottom of page: "Near Albuquerque, N. M."

Specimen of a Vitis arizonica Engelm plant, collected by T. V. Munson and Hopkins in New Mexico, July 23, 1889. Text at bottom of page: "Near Albuquerque, N. M."

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; brown external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures between 0 - 60 mm in length and was assessed to be recently dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures between 0 - 60 mm in length and was assessed to be very-long dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits an elliptical shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures between 0 - 60 mm in length and was assessed to be very-long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Colorado basin. The specimen measures between 100 - 120 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; dark brown external coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 100 - 120 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the left valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; pink internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Guadalupe basin. The specimen measures between 60 - 100 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the San Jacinto basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; tan external coloring; no external sculpturing. Collected in the San Jacinto basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; thin shell; double looped beak sculpturing; bluish-white internal coloring; green external coloring; no external sculpturing. Collected in the San Jacinto basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including both the left and right valves. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 60 - 100 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; reddish-brown external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be relatively-recently dead when collected.

One preserved mussel specimen including the right valve only. The specimen exhibits an oval shape; moderately thick shell; single looped beak sculpturing; white internal coloring; tan external coloring; no external sculpturing. Collected in the Nueces basin. The specimen measures between 0 - 60 mm in length and was assessed to be long dead when collected.