198 CALIFORNIA ACADEMY OF SCIENCES. 



einzahnig, unten zahnlos und nur so lang wie die 

 Augen erscheint, wahrend die inneren Antennen die 

 Deckschuppen der aiissern Fuhler deutlich iiberragen. 

 Die grossten Individuen messen von der Stirn zur 

 Schwanzspitze 2", 4'", die Lange des Thorax betragt 9J." 

 I think it more probable that the species Brandt de- 

 scribes belongs to H, brevirostris (Dana) than to H. pal- 

 pator (Owen). I have never seen any specimen of pal- 

 patoT attain nearly such a large size as the specimen 

 measured by Brandt. The other characters mentioned 

 by Brandt agree perfectly with brevirostris. The locality 

 at which Brandt^s specimens were taken also favors this 

 supposition, as brevirostris appears to be a more north- 

 ern species than palpator, having been taken as far 

 north as Vancouver's Island (Smith). 



Heptacarpus brevirostris (Dana). 



Hippolyte brevirostris Dana, Proc. Acad. Nat. Sci. Phila., 1852, p. 24; 



Crust. U. S. Expl. Expd., Part I, 1852, p. 566, PI. XXXVI, fig. 5. 



Stimpson, Proc. Cal. Acad. Sci., Vol. I, 1856, p. 89; Journ. Bost. Soc. 



Nat. Hist., Vol. VI, 1857, p. 500; Proc. Acad. Nat. Sci. Phila., 1860, p. 



33. Bate, in Lord's Nat. in Vancouver's Is., Vol. II, 1866, p. 279, 



Smith, Eep. Prog. Geol. Sur. Canada, 1878-9, B, p. 214. Kingsley, 



Bull. Essex Inst., Vol. X, 1878, p. 61. Lockington, Ibid., Vol. X, 



1878, p. 160. 

 Hippolyte palpator Brandt, Middendorff's Siberische Keise, Bd. II, Th, 



1, 1851, p. 117. 

 Spirontocaris brevirostris Walker, Trans. Liverpool Biol. Soc, Vol. XII, 



1898, p. 276. 



Allied to palpator, but larger and more robust. Carapace crested for a 

 little more than its anterior third; rostrum short, not reaching the tip of 

 the first joint of the peduncle of the autennules and armed above with five 

 or six teeth, the last three or four of which are on the carapace, the pos- 

 terior one being a little in advance of the middle; lower side of the ros- 

 trum devoid of teeth. The basal spine of the antennules reaches beyond 

 the first joint of the peduncle; the spine above the articulation of the 

 inner flagellum is very short; outer flagellum reaching beyond the antennal 

 scale; inner flagellum about one-half longer than the outer. Antennal 



