THE CRAYFISH AND TTS ALLIES 



111 



The economic im- 

 portance of the Deca- 

 poda may be inferred 

 from the fact that 

 the receipts for the 

 lobster alone, taken 

 and sold by United 

 States fishermen, is 

 estimated for 1892 



FIG. 100. Gelasimiift puynax. Nat. size. 

 Fronto-dorsal view. Photo, by W. H. C. P. 



at one million dollars. The yield 

 to Canadian fishermen was in ad- 

 dition worth half a million dollars. 

 From the United States Fish Com- 

 mission Bulletin for 1890-91 we 

 find that the blue-crab fisheries on 

 the Atlantic and Gulf coasts re- 

 turned almost half a million dol- 

 lars, while the shrimp catch in the 

 same waters brought nearly a 

 quarter of a million dollars more. 

 The latter industry on the Cali- 

 fornia coast is much greater, for 

 the shrimp trade of San Francisco 

 Bay alone is valued at a quarter of 

 a million dollars yearly. 



The remaining orders of Mala- 

 costraca maybe briefly mentioned. 

 The Stomatopoda* include only FlQ . 107 . _ s?uMff enJ)9MS(J) the 



Squilla, 2 the mantis shrimp, SO mantis shrimp. Dorsal aspect. 



From Bigelow. 



1 (rr6/ia, mouth ; TTO^S, foot. 



2 cric/XXa, classic name for a marine crustacean. 



