Multi-volume work

Cope, E.D. 1875-1877. The Batrachia and Reptilia of Costa Rica. Philadelphia. [preprint, published by the author]

Volumes

1. Cope, E.D., 1875. On the Batrachia and Reptilia of Costa Rica, [26 Nov] 1875: 93-154, pls. 23-28.
2. Cope, E.D., 1877. Atlas, Apr 1877: i, pls. 23-28.