1908 Bulletin 4.7, United States National Museum. 



the present species. P. quadrifiUs is also said to have 5 branchiostegal 

 rays, but this is possibly an error. It is also described as having a slender 

 superciliary filament, and 1 on each side of the nape. We do not find, 

 to offset these, any details in the original description which agree strik- 

 ingly with our fish, even the color being inapplicable. (Gilbert.) (sellaris, 

 saddled.) 

 Gottus quadrifiUs, BEAN, in NELSON'S Report Nat. Hist. Coll. in Alaska, 309, pi. 18, 1887 ; 



not Porocottus quadrifiUs, GILL. 

 Acanthocottus sellaris, GILBERT, Eeport U. S. Fish Comm. 1893 (1896), 419, Bristol Bay, 



at Albatross Stations 3229, 3231, and others, in 5 to 17 fathoms. 



2368. POROCOTTUS QUADRATUS, B. A. Bean, new species. 



Head 2f ; depth 3|; eye 3 in head; mandible 3i -; maxillary 3; inter- 

 orbital width 2 in eye. D. VIII, 14; A. 12; V. I, 3; P. 16. Head rather 

 short and broad, quadrangular; profile from tip of upper jaw ascending 

 and thence gently sloping upward to origin of dorsal, from which point 

 almost vertically to end of nasal spine, rounding over orbital ridge, the 

 body gradually tapering to the tail, the depth of the caudal peduncle being 

 contained about 3 times in greatest depth of body. Gill membranes 

 united and forming a fold across the isthmus. Opercular spines well 

 developed, the lowermost on opercle and that on preopercle being curved 

 downward and upward. Cranial ridges ending in spines of small size. 

 Numerous pores on head, those in front visible to the naked eye; tubular 

 pores on body, especially above anal base, where they appear to the naked 

 eye as raised white specks. Fills all well developed, large ; length of first 

 dorsal base little more than % length of second; anal fin origin under third 

 and fourth rays of second dorsal and ending opposite its last ray; length 

 of longest dorsal spine about f as long as longest ray, or equal to length 

 of longest anal ray; pectorals large and broad; ventrals reaching past 

 anal origin. Color reddish brown, relieved by much white; under parts 

 whitish; head above and below brown, flecked with white; lips pale; a 

 broad white half bar on body extending from end of spinous dorsal to 

 fourth ray of second dorsal, another -extending from sixth to ninth ray, 

 and a third from last ray to near end of caudal peduncle, which it encir- 

 cles in connection with a dark bar, the lafter extending on the caudal fin ; 

 pectorals and caudal barred ; ventrals with round black blotches forming 

 rows onthe rays. Bering Island; only the type known. (B. A. Bean.) 

 (Type, No. 33875, U. S. Nat. Mus., a single example 3 inches long, Bering 

 Island, 1883; collected by Dr. L. Stejneger.) (quadratic, four-angled.) 



Porocottus quadratm, B. A. BEAN MS., in JORDAN & GILBERT, Kept. Fur Seal Investiga- 

 tions, 1898, Bering Island. 



2369. POROCOTTUS POLARIS (Sabine). 



This very imperfectly described species is no doubt allied to Porocottus 

 scllans and quadrifiUs. It is thus characterized: D. VI, 13; P. 15; V. 5; 

 A. 14; C. 14 (Sabine). D. VIII, 13; P. 15; V. 5; A. 15; C. 12 to 14 (Ross). 

 This species is compared by Captain Sabine to Coitus tjoUo, but that has 



