1921] Schmitt: The Marine Decapod Crustacea of California 69 
Color.—Thorax obliquely streaked with crimson (Stimpson). Greenish, semi- 
transparent, with oblique reddish marks on carapace (Baker). 
Type Locality.—Monterey, California. 
Distribution.—Monterey Bay to San Diego, California (Rathbun). 
Remarks.—Abundant in tide pools (Baker). The rostrum is more slender over 
the eyes and the teeth on the under side appear to be closer together than seems 
to be the case in S. paludicola. 
Spirontocaris cristata (Stimpson) 
Hippolyte cristata Stimpson, Proc. Acad. Nat. Sci. Phila., 12, 33, 1860; not 
H. cristatus de Haan, 1849. 
Heptacarpus cristatus Holmes, Occas. Papers Calif. Acad. Sci., 7, 202, 
pl. 3, figs. 58, 59, 1900. 
Spirontocaris cristata Rathbun, H. A. E., 10, 102, fig. 45, 1904. 
—— 
= bale, 
a Cc 
Fig. 47. Spirontocaris cristata; a, lateral view of carapace (after Holmes) ; 
b, chela, J, X 10%; c, chela, 9, X 10%4 (from Rathbun, U. S. N. M.). 
Characters.—Rostrum reaching second segment of the antennular peduncle and 
beyond, usually to the tip of the peduncle, only rarely reaching beyond the middle 
of the antennal scale; nearly straight above, but slightly arched over the eye 
where the dorsal teeth are most thickly set; dorsal teeth five to eight, the last 
two or three of which are on the carapace, the most anterior tooth situated at 
some distance from the tip; below there are one, two, or three teeth near the 
tip. Antennal scale longer than the telson. Dactyls of ambulatory legs very 
long and slender, more than one-third, about one-half the length of their propodi. 
This character will serve to distinguish S. cristata from all the other species given 
in this subgroup. 
Dimensions—Type: length 25.4 mm. The Bay specimens were from 8 to 32 
mm. in length over all. 
Type Locality—San Francisco, California. 
Distribution —F rom Sitka, Alaska, to San Diego, California, 3 to 33 fathoms 
(Rathbun). 
Remarks.—The male differs peculiarly from the female. It has the customary 
points of difference: It is smaller and more slender; the rostrum is more slender 
and slightly overlaps the second antennular segment instead of reaching to the 
end of it. The most striking character is the unusual length of the fingers which 
exceed the palm in length and are rather slender, giving the chelae a Palaemon- 
like appearance; in the female, on the contrary, the fingers are considerably shorter 
than the palm, as in most species of the genus (Rathbun). 
