CONTENTS. 



ART. IV.— On the Batrachia and Reptilia of Costa Rica. By E. I). Cope . 93 

 V. — On the Batrachia and Reptilia collected by Dr. John M. Brans- 

 ford during the Nicaraguan Canal Survey of 1874. By E, D. 



CorE 155 



VI. — Report on the Reptiles brought by Professor James Orton from 

 the middle and upper Amazon and western Peru. By E, D. 



Cope -. .159 



VIT. — Note on the Ichthyology of Lake Titicaca. By E. D. Cope . 185 

 VIII. — A descriptive Catalogue of the Scalidae of the West India 



Islands. Bv O. A. L. Moech, Ph.D 189 



J^xtra copies printed in advance for the Authors. 



