890 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiv. 
C. com/mmis, three times as long- as broad; their anterior margin and 
also the dactylus, when flexed, are more longitudinal than in C com- 
munis. 
Dimensions. — Length of ovigerous female 48.3 mm., length of 
carapace 12.2 mm., of scale 8.2 mm. 
Type locality.— OQ San Diego, California, 124 fathoms, U. S. Fish 
Commission steamer Alhatroxs .station 2985 (Cat. No. 25246). 
Distribution. — Ranges from Monterey Bay, California, to San 
Domingo Point, Lower California, 44 to 266 fathoms. 
CRANGON ABYSSORUM. 
Integument ver}^ thin. Anterior of median spines minute. Rostrum 
linear, flattened above, acute, ascending at an angle of 30 degrees, 
below compressed. Eyes very large, hemispherical, inner faces flat 
and contiguous. Second segment of antennulse about one and a half 
times as long as third. Maxillipeds exceeding scale by half length of 
terminal segment. Manus widening distally, length three times width, 
dactylus more longitudinal than transverse. Sixth abdominal somite 
having two prominent dorsal carina? and a short, low, lateral carina. 
Dimensions. — Length of female 61 mm., of carapace and rostrum 
17 mm., of scale 10.3 mm. 
Tyj>e locality. — Bering Sea, southwest of Pribilof Islands, 1,771 
fathoms, station 3603, U. S. Fish Commission steamer Albatross (Cat. 
No. 25247). 
Distribution. — Extends from Bering Sea to southern end of Cali- 
fornia, in 685 to 1,771 fathoms. 
c. Group of C. munita, in vMch the gastric region is depressed below the general level of the 
carapace. 
CRANGON ACCLIVIS. 
Compared to O, nfiunita Dana, the lower lateral spine of carapace 
is further back, the anterior median spine is much larger and farther 
forward, projecting well in front of the posterior line of the orbits; 
the rostrum is narrower, ascending at an angle of about 45 degrees, 
and the anterior margin of the hand is more longitudinal. 
Dimensions. — Length of male 24.8 mm., length of carapace 7.4 mm., 
of scale 3 mm. 
Type locality. — Off Santa Cruz Island, California, 266 fathoms, sta- 
tion 2948, U. S. Fish Commission steamer Albatross (Cat. No. 25248). 
Distrihution. — Dredged from off the Trinity Islands, Alaska, to 
southern California, 80 to 266 fathoms; scarce. 
CRANGON VARIABILIS. 
Like C. mtmita., but carapace nearly half as long as abdomen, ros- 
trum convex from behind forward, tip rounded and thickened. Outer 
