42 



MAMMALIA. 



212, 213. Skull of the Skunk, (Mephites americana.) 



214. Skull of the Fisher, (Mustela canadensis.) 



215, 216. Skull of the American Sable {Mustela martes.) 



217. Skull of the North American Otter, (Lutra canadensis.) 



ORNITHOLOGICAL 



218. Upper mandible of the Albatross. From South America. 



ICHTHYOLOGICAL, 



ORDER PLECTOGNATHI. 



FAMILY GYMNODONTID^. 



219. Diodon pilosus, Hairy Balloonfish. New- York bay. 



FAMILY OSTRACIONHLE. 



220. Lactophrys de rhamii ? Taken on the shore of Long Island. 



Not described in De Kay's Zoology. 



Characteristics. No orbital spines ; back elevated in the form of a 

 crescent, longitudinally, with two spines, centrally situated on the pe- 

 riphery of the crescent, and distant one third of an inch from each 

 other ; three spines on each side of the abdomen ; length, four inches. 



Should this prove to be an undescribed species, it is proposed to name 

 i De Rhamii, in honor of the late Henry C. De Rham, Jr. 



