CALIFORNIA STALK-EYED CRUSTACEA. 193 



Bate's diagnosis of this genus was based on an exam- 

 ination of Leach's type specimens of varians. I have 

 slightly modified Bate's description, as some of the spe- 

 cies which Bate himself refers to Hippolyte contradict 

 the characters of the genus as he defines it. 



Hippolyte calif orniensis Holmes. 



Hippolyte californiensis HOLMES, Proc. Cal. Acad. Sci. (2), Vol. IV, 1895, 

 p. 576, figs. 21-26. 



A long slender species. Rostrum sleiider, slightly upturned, a little 

 longer than the carapace; upper margin armed with 3-5 teeth; lower 

 margin with 4-5 teeth; base of the rostrum rounded and not continued 

 upon the carapace. A supraorbital spine. Peduncle of the antennules 

 about one-half as long as the rostrum; outer flagellum much shorter 

 than the slender inner one, the last few joints much narrowed. First 

 pair of chelipeds very short; hand broad and thick at the base, which fits 

 into a depression in the carpus. Second pair of chelipeds more slender 

 but much longer than the first pair; carpus three-jointed, the first joint 

 the longest. Abdomen not crested or carinated. Telson truncated and 

 spinulous at the tip. 



Length, 38 mm. 



Bodega Bay, Calif., in the eel-grass! San Pedro! San 

 Diego! Specimens from the last named locality are con- 

 siderably smaller than those from Bodega Bay. 



Hippolyte Layi Owen. 



Hippolyte Layi OWEN, Zool. Beechy's Voyage, 1839, p. 90, PI. XXVII, fig. 

 3. BRANDT, in Middendorff' s Siberische Reise, Bd. II, Th. 1, 1851, 

 p. 117. STIMPSON, Journ. Bost. Soc. Nat. Hist., Vol. VI, 1857, p. 499. 

 BATE, in Lord's Nat. in Vancouver's Is., Vol. II, 1866, p. 279. KINGS- 

 LEY, Bull. Essex Inst., Vol. X, 1878, p. 62. LOCKINGTON, Ibid., 1878, 

 p. 161. 



I have seen no specimens which I can refer to H. 

 Layi. Owen's short description of this species is as 

 follows: 



" Hip, rostro acuminato, supra multi-serrato, ante medium subtus 

 quadri-serrato. Long. corp. unc. 2. Color rujber." 



A little more light on the subject is given in the discussion of the affin- 

 ities of this species. " In addition to the difference in the serrations of 

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