196 BULLETIN 129^ UNITED STATES NATIONAL MUSEUM 



antero-lateral border of the buccal cavity. Pterygostomian region 

 carinate, carina rouglily crenate. 



Chelipeds of male large; merus semicylindrical (flattened below) 

 and strongly pustulate, especially at the angles; carpus pustulate, 

 several ridges on upper-outer surface; manus long, high, compressed, 

 the palm below the wide carina often inflated; fingers deflexed, and 

 in old males, gaping at base, with a large tooth near base of dactyl. 



Legssubcylindrical, more or less pubescent; 

 propodi sulcate on either side; dactyli con- 

 siderably shorter than propodi and fur- 

 nished with sharp, corneous tips. 



Variations. — In the female the regions of 

 the carapace are much less elevated, the 

 gastric region more evenly rounded. Oc- 

 casional small ones (1 male, 3 females, in 

 the collection) 13 or 14 mm. long, have a 

 slender, sharp spine on the hepatic margin, 

 a character not found in other young or 

 adults. One of the females is ovigerous. 

 FIG. 79.-SCYRA ACUTIFR0N3 (31548), Measuremeuts . — Male (14966), length of 

 MAxiLLiPED, X 6.2 carapace to tip of horns 52.6, width 37.7 mm. 



Range. — Kodiak, Alaska, to San Diego, California, low tide to 45 

 fathoms. 



Material examined. — • 



ALASKA 



Kodiak; W. G. W. Harford; 1 female (14801). 



BRITISH COLUMBIA (VANCOUVER ISLAND) 



Ucluelet; low tide to deep water; from Geol. Surv. of Canada; 1 

 male (40064). 



Off Cape Beale; Sept. 26, 1888; Albatross: Lat. 49° 00' 00" N.; 

 long. 125° 48' 00" W.; 24 fathoms; gy. S.; temp. 52.3° F.; station 

 2881; 1 female (16344). Lat. 48° 53' 00" N.; long 125° 53' 00' W.; 

 34 fathoms; R.; temp. 50.3° F.; station 2879; 1 male (16343). 



Victoria; C. F. Newcombe; 1 male (15793). 



WASHINGTON 



Off Cape Flattery; lat. 48° 30' 00" N.; long. 124° 57' 00" W.; 

 September 24, 1888; Albatross: 40 fathoms; R.; temp. 47.8° F.; 

 station 2873; 1 female (18986). 27 fathoms; R. Sh.; temp. 50.3° 

 F.; station 2874; 2 males (16020). 40 fathoms; R. Sh.; temp. 

 47.8° F.; station 2875; 1 female (18987). 



Near Port Townsend, Admiralty Inlet; Admiralty Head Light, 

 N. 38° W., 1.3 miles; 26 to 15 fathoms; R. Sh.; temp. 50.8° F.; 



