48 



University of California Publications in Zoology [Vol. 23 



Hippolyte californiensis Holmes 



Hippolyte californiensis Holmes, Proc. Calif. Acad. Sci., (2), 4, 576, figs. 

 21-26, 1895; Occas. Papers Calif. Acad. Sci., 7, 193, 1900; Eathbun, 

 H. A. E., 10, 56, 1904. 



Pig. 26. Hippolyte californiensis; a, mandible; o, lateral view of carapace 

 (from Holmes) ; c, lateral view of carapace, X 8, showing arrangement of rostral 

 spines most commonly met with. 



Characters. — Eostrum slender, a little longer than the carapace, armed both 

 above and below with three to five, exceptionally six teeth; anterior tooth of each 

 series usually situated immediately behind the acuminate tip, giving it a more or 

 less trifid appearance; remaining teeth of upper series usually more or less 

 bunched over the eye and confined to the basal half of the rostrum; base of 

 rostrum rounded and not continued upon the carapace. Antennular peduncle 

 about one-half as long as rostrum. Abdomen not crested or carinated; telson 

 truncated and spinulous at the tip. 



Dimensions. — Type: length 38 mm. 



Color. — Green (Holmes). 



Type Locality. — Bodega Bay, California. 



Distribution. — From Sitka, Alaska, to San Diego, California (Eathbun). 



Bemarlcs. — "In a lot of eleven specimens from Puget Sound, the dorsal teeth 

 are usually two, in one case three, on the basal half of the rostrum, and one or 

 none near the tip. In a few individuals from San Diego the rostral teeth are 

 typical" (Eathbun). In another lot of over fifty specimens received from the 

 Venice Marine Biological Station, Venice, California, there is only one "typical" 

 specimen. The rostrum figured by Holmes as the type seems to be a comparatively 

 rare variation in the arrangement of the dorsal spines. With but three exceptions 

 the rostral extremity of the Venice specimens is trifid; the exceptional specimens 

 have a bifid rostrum. 



