ZJnwersity of North Dakota. 37 



211 — C'ambarns affinis. Cray-fish. S.I. 



Potomac River. 

 212 — Crangon vulgaris. Common Slirim)). S. I. 



Off Cape Cod, Mass ; 26 fatlioms. 



213 — Pajidoltis lejitoceros. Deep-water prawn. S. I. 



Off Martha's Vineyard, Mass.; 46 fathoms. 



214 — PalaMuonetcs vulgaris. Common Prawn. S.I. 



Narragansett Bay, R. I., shore. 



215 — Pagurus sp.? Hermit Crab. 



Borneo. 



216 — Pagurus sp.? Hermit Crab. 



217 — Maja squinado. Large Sea-crab. 



German Ocean. 



218 — Homarus Americanus. Large specimen of the Ameri- 

 can Lobster. New England coast. 



219 220 — Cambarus acutus. Cray-fish. 



Grand Forks, Dakota. 



Class— Arch nida. 



ORDER ARTHROGASTRA. 



221 — Scorpio. Scorpion. 



ORDER — ARANEINA. 



222 — Tarantula lycosa. Tarantula Spider. 



California. 



223 — Tarantula lycosa. Tarantula Spider. San Jose, Cali- 

 fornia. 

 Presented by Mr. Goldwin S. Sprague, October, '88. 



