NO. 1272. NEW DECAPOD CRUSTACEANS— RATHB UN. 891 
margin of antennal scale concave. Second to fifth, inclusive, and 
sometimes the first, somites of abdomen carinated, and except on the 
first and second the carina is usually high, laterall}^ compressed, and 
blunt. 
Diviensions. — Female, length of body 32.2 mm, of carapace 9.2 mm. 
Type locality. — Ofi" North Head, Akutan Island, Alaska, 72 fathoms, 
station 2842, U. S. Fish Commission steamer Alhatnm (Cat. No. 25249). 
Distribution. — Ranges from Bering Sea to southern California, 72 
to 184 fathoms. 
CRANGON SPINOSISSIMA. 
Compared to C. variahilis., the lower lateral spine of the carapace is 
more nearly in line with the superior lateral spine; the anterior median 
spine is larger and farther forward, advancing to a ane in front of the 
posterior line of the orbits; rostrum narrower, long-er, acute, and more 
ascending; hand longer and narrower. Difl'ers from all allied species 
in having the somites of the abdomen armed laterally with spines. 
Dimensions. — Female, length of body 36 mm., of carapace 10.5 mm. 
Type locality. — Off" Point Arena, California, 51 fathoms, station 
8351, U. S. Fish Commission steamer Albatross (Cat. No, 25250). 
Distribution. — Off Oregon and California, 51 to 96 fathoms. 
CRANGON SPINIROSTRIS. 
Differs from all others of the munita group in having a long sub- 
erect spiniform rostrum. Anterior median gastric spine similar to the 
rostrum. Orbital spine slender and ascending, antero-lateral spine 
diiected upward and outward. Third, fourth, and fifth abdominal 
somites carinated. 
Dimensions. — Female, length of body 35.4 mm., of carapace 10.5 
mm. 
Type locality.— ^OTth of Unalaska, 399 fathoms, station 3329, U. S. 
Fish Commission steamer Albatross (Cat. No. 25251). 
SCLEROCRANGON ALATA. 
A small species allied to S. boreas. Carapace only slightly broader 
than long, surface sculptured and pitted, two spines and a tubercle on 
median carina. Antero-lateral angles broadly alate. Spine of antennal 
scale advanced as far as or farther than the blade. Hand less than 
twice as long as broad. Abdominal pleura without spines. 
Dimensions. — Male, length 38 mm., length of carapace 11 mm., width 
at branchial spine 10.7 mm. 
Type locality. — Admiralt}^ Inlet, Puget Sound, 40 fathoms, station 
2865, U. S. Fish Commission steamer Albatross (Cat. No. 25252). 
DistTibution. — From Bering Sea to Puget Sound, 6 to 91 fathoms. 
