84 RATHBUN 
SPIRONTOCARIS CARINATA (Holmes). 
Heptacarpus carinatus HOLMES, Occas. Papers Calif. Acad. Sci., VII, 202, 
pl. 111, fig. 60, 1900. 
Distribution.— From Monterey Bay, shallow water (Holmes), to Point 
Loma, California (A/batross, one specimen). 
The eyes of this species are very slender. The antennular peduncles 
extend about one third the length of acicle. 
SPIRONTOCARIS STYLUS (Stimpson). 
Hippolyte stylus STIMPSON, Proc. Acad. Nat. Sci. Phila., XvI, 154, 1864 
(June). 
Hippolyte esquimaltiana BATE, Proc. Zool. Soc. London, 1864 (read De- 
cember 13), 666. 
Hyppolyte esquimaltianus BATE, in Lord’s The Naturalist in Vancouver 
Island and British Columbia, 11, 278, 1866. 
A rather slender species. Rostrum about one third longer than cara- 
pace, exceeding acicle, slender, somewhat styliform, horizontal and 
straight, armed above with 
4 or 5 teeth near its base 
(one on the carapace in- 
cluded) and 5 or 6 teeth 
below. An antennal, but 
no pterygostomian spine. 
Eyes small. Antennu- 
lar peduncle reaching 
about two fifths the length 
of the acicle; second and 
third segments very short ; 
Fic. 36. Spirontocaris stylus. ¢. Barclay Sound. a. Side outer flagellum scarcely 
of carapace and abdomen (X 2). 4. Dorsal view of anterior por- 5 
tion (X 3). reaching the terminal 
fourth of the acicle; inner flagellum exceeding acicle; basal scale not 
reaching beyond first segment. Antennal peduncle extending to end of 
second segment of antennular peduncle; acicle (measured along outer 
margin) shorter than carapace. 
Maxillipeds short, slightly exceeding antennal peduncle; first pair of 
feet stout, not exceeding eyes; second pair reaching to middle of acicle; 
fifth pair scarcely to end of maxilliped. 
The abdomen is strongly geniculated, though the third segment is 
gently rounded in profile; fourth segment unarmed; sixth segment not 
quite twice as long as fifth; telson with 3 pairs of side spinules. 
I think there is little doubt that Bate’s 1%. esguimadtiana belongs here. 

