THE FISHES OF ALASKA. 



317 



from 2.75 to 7.5 inches, and agree well with current descriptions. The key in Fishes of North and 



Middle America, however, is defective, in that it would require this genus to have the gill-membranes 



free from the isthmus?, which, of course, is not the case. 



Originally described by Bean (1891) from Albatross station 2853, off Trinity Islands. Recorded 



by Gilbert 1 1895) from stations 3227, 3330, and 3331, north of Unalaska, and from stations 3337 and 3339 



south of I'nima Pass 



144. Porocottus sellaris (Gilbert). 



Described by Gilbert (1895) as Acanthocottus sellaris, from stations 3229 to 3234, 32-44. 3247, and 

 3300, all in Bristol Bay. 



145. Porocottus quadrifilis Gill. 



Recorded from St. Michael and Kegiktowik (Nelson 1887). 



146. Porocottus bradfordi Butter. 



The collection contains 27 specimens collected at Karluk Beach. June s in. 1 no:;, and no. 2223. also 

 from Karluk. 1903. 



Originally described by Butter (1899) from Karluk. 



147. Oncocottus quadricornis (Linnaeus). 



Recorded from Feint Barrow and Meade River (Murdoch 1885), and St. Michael (Nelson 1887), as 

 i 'otitis quadricofnis. 



Fxa. 78. Oncocottus quadricornis (Linnaeus). 

 148. Oncocottus hexacornis (Richardson). (PI. xvu. lig. 2.) 



Recorded from Ilerseliel Island and Grantley Harbor (Scolield ISiMi 



We have 3 specimens which we prc\ isionally identify with this species: no. 90, 91, and 92, s to 9 

 inches long, collected by Dr. Gilbert from a salmon trap al Graveyard Point, Kvichak River, near 

 Koggiung, July L6, 1903. 



Ibad 3.16 in length; depth' 5.75; eye 6.8 in head; snoul 4.75; maxillary 2: mandible 1.9; inter- 

 orbital 6; dorsal vm- 1 I; anal L4; ventral 1. 3; pectoral 17; branchiostegals 6, 



We have also a specimen 2 feet long, no. 2179, collected by the Albatross in Uganik Kay. Kodiak 

 Island. As it differs somewhat from the above and from current descriptions of the species, we give a 

 full description of it: 



Head 2.75 in length; depth 5.25; eye (orbit) 8.55 in head (orbital rim 6.2); snout 3.3; maxillary 1.66; 

 mandible 2; interorbital broader than length of orbit but not equal to orbital cavity, 2 in snout; dorsal 

 ix-14; anal 13; pectoral !!•; ventrali, 3; caudal 9 forked rays; branchiostegals 6. 



Body elongate; ventral outline straight; dorsal outline from tip of snout to end of spinous dorsal 

 gently arched and slightly bulging, from then- to base of caudal straight, the head, however, slightly 

 depressed; posterior pari of body soniewhat compressed; caudal peduncle rather long but stout, its 

 Length 1. 1 in snout, its depth about half its length. 



Head large and broad, the snout rather blunt, its anterior profile a straight slope from the prominent 

 tubercle of the premaxillary pedicel; mouth wide and capacious, the gape extending to below pupil, the 



