1921] Schmitt: The Marine Decapod Crustacea of California 63 
Spirontocaris kincaidi Rathbun 
Spirontocaris kincaidi Rathbun, Proc. U. S. Nat. Mus., 24, 899, 1902; 
H. A. E., 10, 95, fig. 43, 1904. 
Fig. 40. Spirontocaris kincaidi, 9, lateral view, X 2% (from Rathbun, U. 8. 
N. M.). 
Characters.—Carapace short in relation to the abdomen. Rostrum one-third 
longer than the carapace, not reaching tip of antennal scale, slightly concave 
above, horizontal; armed above with five, occasionally six teeth, two of which 
are on the carapace, anterior dorsal tooth a little in front of the middle of the 
rostrum; tip acute; lower limb tapering from a point in front of the eye to the 
tip, armed with five teeth, one subterminal. Basal spine of the antennules reach- 
ing distal margin of the second segment of the peduncle. Posterior margin of 
the third abdominal segment is produced backward into a pronounced lobe; the 
abdomen is strongly bent at this point; the fourth segment is spineless; the sixth 
is barely twice as long as wide or high, and a little shorter than the telson. 
Dimensions.—Type, ovigerous female: approximate length 36.5 mm., length 
of carapace and rostrum 13.6 mm., of rostrum 7.7 mm. 
Type Locality —Off Santa Cruz, California, 21 fathoms (‘‘ Albatross’’ station 
3124). 
Distribution—Puget Sound to San Pedro, California, 21 to 100 fathoms. 
Spirontocaris layi (Owen) 
Hippolyte layi Owen, in Zoology of Captain Beechey’s Voyage (in the 
“‘Blossom’’), Crustacea, p. 90,. pl. 27, fig. 3, 1839; Bate im Lord’s 
Naturalist in British Columbia, 2, 279, 1866; Lockington, Bull. Essex 
Inst., 10, 161, 1878. 
Spirontocaris layi Rathbun, H. A. E., 10, 96, 1904. 
Fig. 41. Spirontocaris layi, lateral view of anterior portion (after Owen). 
