94 RATHBUN 
ened portion of outer flagellum extending nearly half its length beyond 
the scale. Antennal peduncle just as long as antennular. Half the last 
segment of the maxilliped lies be- 
yond the scale. The first pair of 
feet just reach the tip of the scale ; 
the fingers are unusually short, 
as above mentioned. No spine 
on fourth segment of abdomen; 
sixth segment twice as long as 
fifth; telson broken. 
Dimensions.—Length of ovig- 
erous female, exclusive of ros- 
trum and telson, 24.8 mm., length of carapace 7.7 mm. 
Distribution. —Southern California, deep water. The type, an ovig- 
erous female, was dredged off Santa Cruz Island, in 266 fathoms (A/ba- 
tross station 2948). A much smaller female comes from off San Diego, 
417 fathoms (A/datross station 2928). 

Fic. 41. Spirontocaris brachy- 
dactyla. @. Station 2928. a@. Side 
(X 3). &. Chela of first pair (Xx 5). 
SPIRONTOCARIS CAMTSCHATICA (Stimpson). 
Hippolyte camtschatica STIMPSON, Proc. Acad. Nat. Sci. Phila., XII, p. 33, 
[102], 1860. 
Belongs to the gaimardii group. 
Female.—Rostrum a little longer than the carapace, shorter than 
antennal scale, nearly straight (or slightly concave above), horizontal, 
armed with 4 or 5 teeth above, the ante- 
rior tooth at about the distal third, 1 or 
2 teeth on carapace; upper limb very 
narrow, disappearing anteriorly; lower 
limb deepest a little in front of the eye, : : 
Ms : i 1G. 42. Spirontocaris camtschatica. &. 
and tapering distally, armed with 4 to 6 — Side of carapace (x 2). Petropavlovsk. 
teeth; extremity acute. A strong antennal, a very small pterygostomian 
spine. 
The antennular peduncle reaches about two fifths the length of the 
antennal scale; second and third segments very short, the second a little 
the longer; the thickened portion of the outer flagellum extends to the 
terminal third of the antennal scale; the inner flagellum reaches to the 
end of the scale. The spine at the outer base of the antennules reaches 
to, or nearly to, the distal margin of the second segment. The outer 
margin of the antennal scale measures nearly as long as, just as long as, 
or a little longer than, the carapace; its spine falls considerably short of 
the laminar portion; the peduncle extends to the end of the second 
