68 University of California Publications in Zoology (Vou. 23 
Distribution—San Francisco Bay, California, to Magdalena Bay, Lower Cali- 
fornia (Rathbun). 
Remarks.—Distinguished by the extreme shortness of the rostrum (Stimpson). 
S. taylori though approaching S. brevirostris never attains so large a size and 
always retains its characteristic rostrum in which the last two teeth, immediately 
following the acute tip, are above rather than behind it. 
Biological Survey of San Francisco Bay.—The localities at which 
Spirontocaris taylori was taken were always characterized by an 
abundant growth of algae. This species was dredged from among 
the rocks, in 2 to 5 and possibly 7 fathoms along both shores of Golden 
Gate: two specimens at D 5770, on the north side east of Point Bonita, 
and two and six specimens respectively, at D 5777 and 5778 on the 
south side, east of Fort Point. Five other specimens were washed 
from bunches of seaweed stripped from the piles of the Sausalito 
Ferry building. 
Spirontocaris picta (Stimpson) 
Hippolyte picta Stimpson, Ann. Lye. Nat. Hist., N. Y., 10, 125, 1871. 
Heptacarpus pictus Holmes, Occas. Papers Calif. Acad. Sci., 7, 200, pl. 3, 
figs. 54 and 55, 1900. 
Spirontocaris picta Rathbun, H. A. E., 10, 101, 1904. 
Heptacarpus pictus Baker, Rep. Laguna Mar. Lab., 1, 106, 1912. 
d € b 
Fig. 46. Spirontocaris picta; a, lateral view of carapace; b, acicle (after 
Holmes); ¢ and d, variations in spining of rostrum; e, mandible (after Baker). 
Characters.—Rostrum reaches beyond the middle of the antennal scale but does 
not exceed three-fourths its length, about equals or slightly exceeds the antennular 
peduncle; armed above with six or seven quite evenly spaced teeth, the last two 
of which are on the carapace; armed below with two to four teeth near the tip. 
Antennal scale about as long as the telson. 
Dimensions.—Type: length 33.8 mm. 
