THE FISHES OF BERING SEA. 



463 



unless based on very extensive collections. Our 21 specimens show the followiDg flu 

 formulie : 



Kays 



Specimens . 



First dor- 

 sal. 



IX X 



18 3 



Second 

 ddrsal. 



13 16 

 10 10 



Anal. 



12 13 14 15 

 1 1 15 5 



Pectoral. 



17 18 



T- 14 



Dr. Beau records this species from St. Michael, Chamisso Island, Eschscholtz 

 Bay, Point Belcher, Arctic Ocean. Mr. Scofleld found it at Port Clarence and 

 Grantly Harbor. 



98. Myozocephalus polyacanthocephalus (Pallas). (Plate LXIII.) 



Several specimens from Unalaska and one from Robben Island, the latter per- 

 fectly typical iu all respects and giving us the first Okhotsk Sea recprd for the species. 

 In the Eobben Island specimen the pectoral rays are rougheued on their iuner surface 

 with horny tubercles, as is usual with adult males of this species. The fin rays are: 

 D., X, 14; A., 12; P., 18. 



Seen also at St. Paul and TJnga, the species being generally <!orainou in Bering Sea. 



Dr. Bean records it from Sitka, Kadiak, Cooks Inlet, Shumagins, Unalaska, Atka, 

 Amchitka, Port Moller, Cape Lisburne, and Plover Bay. Stejneger found it on 

 Bering and Medni islands and at Petropaulski. 



99. Myoxocephalus stelleri Tilesius. (Plate LXIVo.) 



Myoxocephalus stelleri Tilesius, M^m. Acad. Petersb. 1811, IV, 273. 

 Coitus decastrensis Kner, Dent, Kais. Akad. Wissen. XXIV, 1865, 2, taf. 2, figs. 1, la. 

 Cottus platycephalus Bean and Bean, Proo. U. S. Nat. Mus. 1896, 240, 384; not of Pallas. 

 Cottus iiiger Beau and Bean, Proc. U. S. Nat. Mns. 1896, 240, 384 (in part: Nos, 33899, 33872, 



33833, 33850, 33908, 33844, and 33879) ; not of Bean. 

 f Cottus meriensii Cuvier and Valenciennes, Hist. Nat. Pois. VIII, 496. 

 ? Coitus marmoraius Cuvier and Valenciennes, Hist. Nat. Pois. VIII, 497. 



This species is now recorded from Bering and Copper islands, Petropaulski, and 

 the mouth of the Amur Kiver. It is evidently abundant in western Bering Sea, but 

 probably does not occur among the Aleutian Islands or on the Alaskan coast, There 

 seems to be no doubt that our specimens are correctly identified with Myoxocephalus 

 stelleri, with which they agree in fin rays and in the peculiar and characteristic 

 coloration. They agree also with the description of 0. decastrensis, the figure of which, 

 however, diverges in several important details. It is highly improbable that 0.' 

 mertensii and C. tkarmoratus can ever be satisfactorily identified, as we have only very 

 brief accounts of them, based on colojed drawings. 



Following is a detailed description of our specimens: Reseuiibling in shape 

 M. polyacanthocephalus, the head less depressed and the snout deeper than in M. jaok. 

 Characteristic features are the greatly thickened papillose lips, thei presence of a 

 supraocular tentacle, and the peculiar coloration. The skin is naked or with a few 

 scattered small plates in adult males; theinterorbital is deeply concave, and the 

 occipital and parietal ridges are heavy and more or less broketi or rugose. 



Head 2f to 2f in length; depth, 4; least depth of caudal peduncle, 1^ in snout; 

 greatest width of head equaling distance from tip of snout to base of preopercular 

 spine. Depth of head at occiput equaling half its length. 



Mouth large, the lower jaw included, but less conspicuously overlapped than in 



