NE W DEC A POD CR U8TA CEA NS—RA TUB UK 889 
long or nearly as long as the carapace, exclusive of rostrum. Maxilli- 
peds exceeding scale, antepenult segment not dilated. Hand elongate, 
about three times as long as wide. 
DtjnenswjhH. — Ovigerous female, length, 23 mm.; of carapace, 5.3 
mm.; of antennal scale, 4.2 mm. 
Ti/jje /oeaJifi/.^-O^ Wilmington, California, 27 fathoms, U. S. Fish 
Commission steamer AlhatroK.s station 2I>39 (Cat. No. 25243). 
CRANGON DALLI. 
Rostrum long and narrow. Acicle about seven-tenths as long as 
carapace, obliquely subtruncate, inner angle of extremity rounded, 
receding, spine extending beyond the blade to no greater extent than 
anterior width of blade. Hands widening from proximal to distal 
end, distal margin transversely oblique, length of palm about two and 
two-thirds its width. Sixth abdominal somite with two blunt promi- 
nent carinas, which are the most distinguishing feature of the species. 
Dwieiisions. — Length of ovigerous female, 61.5 mm. ; of carapace, 
1().2 mm.; of scale, 11.5 mm. 
Type locaUty. — Bering Sea, oil* Cape Seniavin, Alaska, 30 fathoms, 
U. S. Fish Commission steamer Albatross station 3287 (Cat. No. 25244). 
Distrihution. — One of the most abundant of Alaskan shrimps. 
Ranges from Bering Sea to Washington and to Kurile Islands, in 42 
to 61 fathoms. 
CRANGON FRANCISCORUM ANGUSTIMANA. 
Differs from typical C. franciscoruni chiefl}^ in the shape of the 
hands, which are narrower, the difference being greater in the male 
than in the female (in the male the length is live and a half times the 
width), the dactylus is more longitudinally placed, the poUex is more 
transverse and nearer the proximal end of the hand. 
Diiiiensions. — Length of female 70.6 mm., of carapace 18.9 mm., of 
scale 13 mm. 
Tyjx' locality.— O^ Chuckanuts Island, Bellingham Bay, Washing- 
ton, 11 fathoms, station 3612, U. S. Fish Commission QiQuiwQv Albatross 
(Cat. No. 25245). 
Distrihution. — Ranges from British Columbia to Oregon, in 23 to 
67 fathoms. 
b. Group of C. communis, in ivhich the carapace lias two median spines and the gastric 
region is not depressed below the general level. 
CRANGON RESIMA. 
Anterior of median spines much the smaller. Rostrum advanced 
beyond ej^es, ascending, and having, in full-grown individuals, an 
inferior plate, thin, compressed, spatulate. Second segment of anten- 
nular peduncle three times as long as third. Hands shorter than in 
