160 



Hippolyte taylori Stimpson, Jour. Bost. Soc. Nat. Hist., vi, p. 500 

 ext. p. 60), 1857. 



Three or four specimens from Magdalena Bay (Fisher) evidently 

 belong to this species, having the peculiar rostrum with the second 

 and third spines almost above the terminal one. The stout first pair 

 of feet, and the second pair reaching to the tips of the maxillipeds, as 

 described by Stimpson. Length of largest specimen l-fa inches. 



Hippolyte palpator Owen, Zoology of the Voyage of the Blossom 

 (Capt. Beechey), Crustacea, p. 89, pi. xxviii, f. 3, 1839. Stimpson, 

 Proc. Cal. Acad., I, p. 89 (1856). Ibid, Jour. Bost. Soc, VI, p. 

 499 (1857). 



H. brevirostris of Dana (U. S. Expl. Ex. Crust., I, p. 566, pi. xxxvi, 

 f. 5) is not improbably a variety of this species (vid. Stimpson, 1. c, 

 p. 500). A single specimen from the bay of San Francisco in the 

 Museum of the California Academy has but one tooth on the under 

 side of the rostrum near the extremity, which is bifid and furnished 

 with six teeth above. The maxillipeds are very long, about half as 

 long as the entire body, and are spinulose internally at their tips. 

 The basal joint of antennulae has a spine, longer than the rostrum, at 

 its base. The next joint has a smaller lateral spine and there is a 

 sharp spine on the last joint of the peduncle, immediately over the 

 centre of the third flagellum. The telson has two rows of fine, short, 

 sharp spines, and two larger spines on the posterior margin. The 

 penultimate abdominal segment has two teeth on each side of the 

 posterior margin and the epimera of the two preceding segments are 

 prolonged backward into a spine. 



The chief difference between this and Owen's description of H. pal- 

 pator is in the number of rostral teeth, but as these are variable in 

 this genus I hesitate to describe it as new, preferring to refer it to 

 one of the above forms. 



Several specimens from Magdalena Bay agree with H. palpator in 

 the length of external maxillipeds, but have the rostrum with four 

 teeth above. H. palpator was found at Monterey by Capt. Beechey, 

 in the Straits of De Fuca by the Exploring Expedition, and in San 

 Francisco Bay (Stimpson). 



Hippolyte hemphillii, described by myself (Proc. Cal. Acad., vii, p. 

 35 (1876) ) from an imperfect dried specimen, is probably only a vari- 

 ety of the above species with an extremely short rostrum. This 

 variety has been found at Magdalena Bay and San Diego. The ros- 

 trum is equal in length to the eyes ; the terminal tooth is simple, the 

 next smaller and considerably behind the terminal one. 



