1921] Schmitt: The Marine Decapod Crustacea of California 49 
Genus Hippolysmata Stimpson 
Carpus of second pair of legs consisting of more than seven segments. No 
supraorbital spine. Antennules with two long flagella. Mandible without incisor 
process or palp. 
Hippolysmata californica Stimpson 
- Hippolysmata californica Stimpson, Proce. Chicago Acad. Sci., 1, 48, 1896; 
Ann. Lye. Nat. Hist. N. Y., 10, 123, 1871; Holmes, Occas. Papers Calif. 
Acad. Sci., 7, 180, pl. 2, fig. 38, 1900. 
Fig. 27. Hippolysmata californica, lateral view of carapace (after Holmes). 
Characters.—Rostrum slender, strongly ridged on the sides, bent downward 
near the base, about one-half as long as the carapace; armed above with six or 
seven teeth, the last tooth situated at considerably more than the usual interval 
from the preceding one and at about the anterior third of the carapace; below 
armed with three teeth. Flagella of the antennules subequal and longer than the 
body. Second pair of legs very long and slender; ischium stouter than the merus 
and about as long, more or less annulated towards the tip; merus divided into 
something over twenty annulations; carpus about as long as merus and ischium 
combined and divided into about thirty-two annulations; hand minute, oblong, the 
fingers scarcely as long as the palm. Telson subacute, much shorter than the 
uropods. 
Dimensions.—Type: length 31.8 mm. 
Color.—Very conspicuously marked with longitudinal stripes of drab and 
reddish brown (Holmes). Abdomen in life striped longitudinally with red; 
stripes anteriorly, on carapace, bending obliquely upward; greater part of tail-fan 
a deep mahogany color, with tips of uropods and telson bluish; antennules, 
antennae and legs light reddish brown; eggs of ovigerous female light pea-green. 
Type Locality—San Diego, California. 
Distribution —Santa Barbara to San Diego, California (Rathbun). 
Remarks.——Found abundantly in tide pools. The teeth on the under side of 
the rostrum are quite inconspicuous, and are not indicated in the figure taken from 
Holmes, above. 
