1. Report upon the collections of batrachians and reptiles made in portions of Nevada, Utah, California, Colorado, New Mexico, and Arizona, during the years 1871, 1872, 1873, and 1874 Author(s): Yarrow, H. C. (Harry Crécy), 1840-1929, author Publication: [Washington, D.C.?] : [publisher not identified], [1875] Subject(s): AnuraReptilesSouthwestern United States
2. On some unusual modes of gestation Author(s): Wyman, Jeffries, 1814-1874 Publication: [Boston : s.n., 1857?] Subject(s): PregnancyAnuraFishes