70 RATHBUN 
considerably in front of the middle of the carapace (exclusive of ros- 
trum); in S. dispinosa they begin at or a little posterior to the middle. 
Rostrum shorter; the upper and lower 
laminz are narrower and extend nearer 
the tip; there are g to 14 superior teeth 
Pe Reiter nmr gran Ws WE (in S. dispinosa 10 to 12), of which two 
pace of ¢ (X 1§). Station 3200. are on the carapace; 3 to 5 inferior teeth 
on the lamina (the same in 5S. dsfinosa), but none on the slender termi- 
nal portion. 
The second segment of the antennular peduncle is longer than in S. 
bispinosa, being three times as long as the third segment, while in S. 
bispinosa it is twice as long. The outer maxillipeds are longer, reaching 
beyond the antennal scale; in \S. d¢spinosa they do not reach the end of 
the scale. The thoracic feet are longer and slenderer, the first pair over- 
reaching the antennular peduncle; in S. dzspinosa they fall short of the 
peduncle. The last pair exceed the antennal scale by the length of 
the dactylus and one half the propodus; in S. dispinosa, by the length 
of the dactylus only. 
Dimensions.— 2, length 58 mm., length of carapace and rostrum 24.8 
mm., of rostrum 12.8 mm. 
Type locality. — Santa Barbara Channel, California, 265 fathoms 
(Albatross station 3200). 
Distribution. —Off the coast of California, from Point Arena to San 
Diego, in 211-464 fathoms, at 19 stations of the Albatross. 
SPIRONTOCARIS PHIPPSII (Kroyer). 
Hippolyte Phippsii KROYER, Naturh. Tidssk., 111, 575, 1841 (4); K. Danske 
Vidensk. Selsk. Afhand., IX, 314, pl. III, figs. 64-68, 1842 ( ¢ ). 
Hippolyte turgida KROYER, Naturh. Tidssk., 111, 575, 1841 (2); K. Danske 
Vidensk. Selsk. Afhand., 1x, 308, pl. II, figs. 57, 58, and pl. III, figs. 
59-63, 1842 (). 
Hippolyte vibrans STIMPSON, Ann. Lyc. Nat. Hist. N. Y., X, 125, 1871 (¢). 
Female. —Posterior spine of dorsal crest at about the middle of the 
carapace; 7 to 12 dorsal spines, which diminish on the rostrum; 3 or 4 
oncarapace. Midrib of rostrum slightly inclined upward, nearly straight ; 
upper limb diminishing gradually in depth toward the tip; lower limb 
deeper than the upper, triangular, 4 to 7 spines on distal half; tip acute, 
reaching a little beyond the peduncle of the antennula. On the anterior 
portion of the carapace are 2 supraorbital spines, one above and a 
little behind the other, the lower smaller; an antennal spine; and a well- 
developed pterygostomian spine. 
The antennular scale reaches the end, or nearly the end, of the second 
