CALIFORNIA STALK-EYED CRUSTACEA. 197 



outer angle being separated by a considerable interval from the other three 

 which are close together. The spine above the articulation of the slender 

 inner flagellum is very short; outer flagellum much shorter than the inner 

 one. Antennal aciele tapering, longer than the telson; peduncle reaching 

 about to the middle of the aciele which is in advance of the tip of the ros- 

 trum; flagellum often longer than the body. Mandibles with an oblong, 

 thin, apical process which is armed at the distal end with several small 

 teeth; palp two- jointed, about as long as the apical process behind which 

 it normally lies. Maxillipeds very large, extending far beyond the tip of 

 the antennal scale even m small specimens, while in adults the antepenul- 

 timate joint often reaches the tip of the aciele, the last joint extending 

 be5''ond it for a distance greater than the length of the carapace; the outer 

 margin of the antepenultimate joint is spinulous; last joint flattened, 

 about four times the length of the preceding one and armed with a circle 

 of spines at the tip and several smaller spines on the inner margin; there 

 is a small epipodite but no exognath. Anterior chelipeds reaching con- 

 siderably beyond the tip of the antennal scale; hand narrowly oblong. 

 Second pair of chelipeds longer than the first; first joint of the carpus 

 longer than the second; third joint longer than the first or fourth; fifth 

 subequal to the fourth, longer than the sixth, which is much shorter than 

 the seventh; hand about as long as the last three joints of the carpus. 

 Posterior legs moderate, two or three spines on the outer side of the merus 

 near the distal end; dactyls short, stout, about one-fourth the length of 

 the propodi. Ail of the abdominal segments are rounded above; postero- 

 lateral angles of the fourth segment rounded or subacute, having a small 

 spine-tooth; those of the fifth segment acute and ending in a spine. Tel- 

 son somewhat flattened above, where it bears four pairs of spinules; tip 

 broadly rounded and furnished with a minute median spine" between 

 "which and the spines at the outer angles there are on either side about 

 four marginal setae. 



Monterey (Owen)! San Francisco Bay (Stimpson)! 

 San Pedro! Santa Catalina Island! San Diego! Magda- 

 lena Bay (Lockirigt?n). 



Brandt refers some specimens from Alaska to this 

 species. He says: ''Wosnesenski brachte von der Insel 

 Kadjak vier Exemplare einer Hippolyte mit die durch 

 die langen, aiisseren Maxillarflisse und mehrere andere 

 Kennzeichen H. palpator ungemein ahneln. Ich mochte 

 sie daher vorlaufig zu ihr ziehen, obgleich, abweichend 

 von palpator der Thorax derselben oben zwei-bis dreiz- 

 ahnig, der Stirnschuabel oben meist zwei-, zuweilen 



