96 RATHBUN 
group, tapering from a point in front of the eye to the tip, armed with 
s teeth, one subterminal. Antennal spine strong, pterygostomian very 
small. 
Antennular peduncle reaching about two fifths the length of the 
antennal scale, second and third segments very short and subequal, outer 
scale reaching distal 
margin of second seg- 
ment, outer flagellum 
falling short of the tip 
of antennal scale, inner 
flagellum exceeding it. 
Antennal peduncle al- 
most as long as anten- 
nular; scale tapering, measured on outer margin exceeding 
the carapace; its spine long, but still not so advanced as 
the blade. Outer maxillipeds not quite reaching tip of ros- 
trum; first pair of feet to middle of antennal scale; second pair ex- 
tending just beyond maxilliped. 
The posterior margin of the third abdominal segment is produced 
backward in a strong lobe; the abdomen is strongly bent at this point; 
the fourth segment is spineless; the sixth is less than twice as long as 
the fifth, and a little shorter than the telson, which is armed with four 
pairs of lateral spines. 
Dimensions.—Ovigerous @, length (approximate) 36.5 mm., length 
of carapace and rostrum 13.6 mm., of rostrum 7.7 mm. 
Distribution.—From Washington to Santa Cruz, California: 
Puget Sound (T. Kincaid). 
Off Flattery Rocks, Washington, 40 fathoms (Addatross station 2873),1 2. 
Off Santa Cruz, California, 21 fathoms (A/éatross station 3124), 1 Q (type). 
Strait of Fuca, 37 fathoms (A/batross station 3593), 1 egg-bearing ¢, 
placed here with doubt. The rostrum and telson are broken, the 
antennule are a little longer than in the type, their peduncles reach 
nearly to the middle of the acicle. 

Fic. 43. Spivontocaris kincaidt. @ (X 23). 
Station 3124. 
SPIRONTOCARIS LAYI (Owen). 
Hippolite Layt OWEN, in Zoology of Captain Beechey’s Voyage [in the Béos- 
som], Crustacea, p. 90, pl. XXVII, fig. 3, 1839. 
Distribution.— Monterey, California (Owen) ; Esquimalt Harbor, 
Vancouver Island (Bate). 
Owen’s description is as follows: 
“Hip. rostro acuminato, supra multi-serrato, ante medium subtus 
quadri-serrato. Long. corp. unc. 2%. Color ruber.” According to 
