REVISION OF THE FISH FAMILY LIPARIDAE 93 



perhaps a smaller gill slit than P. greeni. P. simushirae appears to 

 differ from P. greeni solely in the larger number of fin rays. P. 

 heringinaus differs from P. simushirae in the Ughter coloration, 

 smaller gill slit and the smaller number of fin rays. Minor differ- 

 ences in the proportional measurements appear to exist. 



Synopsis.— Dorsal 37-40; anal 31-32; pectoral 33-37; pyloric 

 coeca more than 200. Disk 2.3-2.8 in the head. Gill slit typically 

 extending down in 

 front of 1 to 4 pec- 

 toral rays, some- 

 times appearing to 

 be above the fin. 

 Teeth simple and 

 trUobed, elongate, 

 recurved. Dorsal 

 fin deeply notched, 



. 1 , 1 Figure 20.— Polypera greeni. Teeth from type 



connected to less 



than the basal fifth of the caudal fin. Color a light brown. A large 



species, reaching a length of 244 mm. 



RemarJcs. — The Bering Island specimens differ in certain respects 

 from the type as wUl be seen by the following notes on these specimens. 

 Head wider than deep; cheeks swollen. Maxillary reaching posterior 

 margin of eye. Spout somewhat depressed, the upper jaw slightly 

 overlapping. Greatest depth of body at front of first dorsal. The 

 gUl slit is either above the pectoral or extending down in front of one 

 or two rays. Vent separated from the disk by less than the diameter 

 of the disk. Origin of dorsal above middle of pectoral and midway 

 between the disk and vent. A shallow notch between the dorsal and 

 caudal fins is present in the large specimens as figured in the type, 

 absent in the smaller specimen. The two large specimens colored a 

 soft brown as the type. The smallest specimen faded out to an ashy 

 brown. Peritoneum pale with scattered dots, 



POLYPERA BERINGIANUS (Gilbert and Bnrke) 



Liparis callyodon Starks, 1911, p. 196. 



Cyclogaster beringianus Gilbert and Btjrke, 1912a, p. 72. 



Tt/PC— Female, No. 74380 U.S.N.M.; Nikolski, Bering Island, 

 Albatross, 1906; tide pools. Length 65 mm. 



Distribution. — 'Aleutian Islands and southward to Port Townsend, 

 Wash. The specimens examined are from Bering Island; Medni 

 Island; Agattu Island; Unalaska; Kodiak Island; and Port Townsend, 

 Wash. A tide-pool species. Thirty-four specimens examined. 



Relationships. — P. beringianus closely resembles P. greeni and P. 

 simushirae. A discussion of the relationships of these three species is 

 given under P. greeni. 



