94 



BULLETIN 150, UNITED STATES NATIONAL MUSEUM 



Synopsis. — Dorsal 38-39; anal 31-32; pectoral 36-37; pyloric 

 coeca more than 200. Disk 2.4-2.9 in the head. Gill slit typically- 

 above the pectoral fin, sometimes appearing to extend down in front of 

 the upper ray. Teeth as in P. greeni or the lateral lobes appearing 

 somewhat stronger. Dorsal fin notched, barely connected to the 

 caudal. Color pale gray. A small sized species, reaching a length of 

 126 mm. 



Remarks. — ^In this species the depth of the body decreases very 



gradually, or remains the same from the first dorsal to well under the 



« 



^ 



Figure 21.— Polypera beringianus. Type 



Figure 22.— Polypera beringianus. Teeth from type 



second dorsal. The gill slit is either above the pectoral or the upper 

 pectoral ray points at a slight angle downward directly at the lower 

 edge of the gill slit. In some specimens there are shallow notches be- 

 tween the caudal and the dorsal and anal. 



POLYPERA SIMUSHIRAE (GUbert and Burke) 



Cyclogasier simushirae Gilbert and Burke, 19126, p. 354. 



Type.— Male, No. 73327, U.S.N.M.; Milne Bay, Simushir Island, 

 Japan, Albatross, 1906; tide pools. Length 138 mm. 



Distribution. — Known only from the type specimen, 

 species. Type examined. 



A tide pool 



