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University of California Publications in Zoology [Vol. 23 



Distribution. — San Francisco Bay, California, to Magdalena Bay, Lower Cali- 

 fornia (Bathbun). 



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 Port Point. Five other specimens were washed 

 from bunches of seaweed stripped from the piles of the Sausalito 

 Ferry building. 



Spirontocaris picta (Stimpson) 



Eippolyte picta Stimpson, Ann. Lye. Nat. Hist., N. Y., 10, 125, 1871. 

 Eeptacarpus pictus Holmes, Occas. Papers Calif. Acad. Sci., 7, 200, pi. 3, 



figs. 54 and 55, 1900. 

 Spirontocaris picta Bathbun, H. A. E., 10, 101, 1904. 

 Heptacarpus pictus Baker, Bep. Laguna Mar. Lab., 1, 106, 1912. 



Big. 46. Spirontocaris picta; a, lateral view of carapace; b, aeicle (after 

 Holmes); c and d, variations in spining of rostrum; e, mandible (after Baker). 



Characters. — Bostrum 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. 



