1921] Schmitt: The Marine Decapod Crustacea of California 61 
Biological Survey of San Francisco Bay.—Only four specimens of 
this species were taken in the bay; three in 5 to 714 fathoms, from 
the ‘‘rough, rocky bottom’’ to the eastward of Point Bonita 
(D 5770); and one also from a hard bottom of ‘‘fine clean gray 
sand, and medium sized rounded stones’’ in 214 to 314 fathoms on 
the bay side of Fort Point (D 5778). 
Spirontocaris decora Rathbun 
Spirontocaris decora Rathbun, Proc. U. S. Nat. Mus., 24, 896, 1902; 
H. A. H., 10, 79, fig. 33, 1904. 
Fig. 38. Spirontocaris decora, 9, lateral view, X 3 (from Rathbun, U. 8S. 
N. M.). 
Characters.—Sixth abdominal segment longer than the telson, nearly three 
times as long as wide. Rostrum longer than the carapace, armed above with four 
or five teeth, of which one or two are on the carapace, anterior tooth in front of 
middle of rostrum. Rostrum not deep, but less slender than in S. gracilis and 
S. flexa, a little concave above, but nearly horizontal; lower limb narrowing distally 
from near posterior end, armed with six to eight teeth; tip acuminate. Basal spine 
of antennules reaching about to end of first segment of the peduncle. Posterior 
margin of third segment of abdomen is produced backward in the middle, and 
the segment itself is posteriorly prominent but not laterally pinched or carinated 
as in allied species. 
Dimensions.—Type, female: approximate length 47 mm., length of carapace 
and rostrum 16.4 mm., of rostrum 9 mm. 
Type Locality—Off Santa Cruz Island, California (‘‘Albatross’’ station 
2946). 
Distribution—From Straits of Fuea to San Diego, California, 50 to 171 
fathoms (Rathbun). 
