Trask, J.B. 1854. Three specimens of naiades, with decriptions, from the Sacramento River, and lagoons. Proceedings of the California Academy of Science 1: 28-29. Available electronically.
Trask, 1854. Proc. Calif. Acad. Sci. 1: 28.
Trask, 1854. Proc. Calif. Acad. Sci. 1: 29.
Trask, 1854. Proc. Calif. Acad. Sci. 1: 29.
Trask, 1854. Proc. Calif. Acad. Sci. 1: 29.