DECAPODS 115 



Alaska (station 3243), 77.2 mm.; length of carapace 20.1 mm.; length 

 of antennal scale 14 mm. 



Distribution. East part of Bering Sea and along the Aleutian Islands, 

 in 3^-41 fathoms, at 38 stations of the Albatross. 



Also taken at the following localities : 

 Off Kurile Islands, 14 fathoms (Albatross station 3652). 

 Gulf of Georgia, British Columbia, 67 fathoms (Albatross station 2863). 

 Sucia Island, British Columbia (Albatross}. 



Bellingham Bay, Washington, n fathoms (Albatross station 3612). 

 Strait of Fuca, 81 fathoms (Albatross station 3596). 

 Port Townsend, Washington, rostrum narrower than typical (Albatross]. 

 Puget Sound (T. Kincaid). 

 From Sitka northward to Port Clarence and westward along the Aleutian 



Islands to Attu, 5-20 fathoms, at sixteen localities (W. H. Dall). 



CRANGON ALASKENSIS ELONGATA Rathbun. 



Crangon alaskensis elongata RATHBUN, Proc. U. S. Nat. Mus., xxiv, 888, 

 1902. 



The typical C. alaskensis described above passes by insensible grada- 

 tions into a form occurring off the coast of California and Oregon, which 

 differs from it as follows : The rostrum is longer and 

 narrower. The outer flagellum of the antennules falls 

 considerably short of the antennal scale. The scale is 

 much longer than in the typical form, being equal to the 

 length of the carapace exclusive of the rostrum. The 

 fourth segment of the abdomen shows signs of carination. 



mi i n i FIG. 54. Crangon 



The telson is flattened above, but scarcely grooved; \\$>aiaskensheiongata. ?. 



. . Stations 2970, 2971. a. 



tip IS more aCUte. Anterior part of cara- 



7-k- T ^ e e i t ,P ace <X 2$). * Acicle 



Dimensions. Length of ovigerous female from tip of (x 2). 

 rostrum to tip of telson 55.7 mm. ; length of carapace 13.5 mm. ; length 

 of antennal scale u.6 mm. 



Type locality. OS. Santa Barbara, California, 29 fathoms, stations 2970, 

 2971 (Albatross}. 



Distribution. This species occurs in abundance off the west coast of 

 the United States. It has been taken by the Albatross at thirty stations 

 in 9-278 fathoms, off California, Oregon, Washington, and British Colum- 

 bia, and in Strait of Fuca and Puget Sound. The southern limit is off 

 Wilmington, California. It has also been collected in Monterey Harbor 

 by Dr. W. H. Dall, and at Pacific Grove by Mr. J. O. Snyder. 



Variations. The more northern of these specimens (those off the coast 

 of Washington more especially) have the scale not quite so long as the 

 types, but still equal to about four fifths the length of the carapace ; the 



