THE FISHES OP BERING SEA. 461 



united in front of the middle line of isthmus, with a rather wide free margin behind. 

 The lateral line is without plates. The nasal spines are small, and there are four 

 short spines on preoperctilar margin. 



Our specimens answer well to the detailed descriptipn of the type, but are still 

 more ornate in that they possess along the back a number of broad dark bars alter- 

 nating with lighter bars, the former confluent below with the ground color of the sides. 

 In our largest specimen, 7 cm. long, the ventral fins extend only to base of third anal 

 ray. There are no tubercles on the rays, and the membranes extend nearly to tips of 

 the two outer rays, and two-thirdslength of the inner ray. The ventral spine is slender, 

 nearly as long as the inner ray, and is firmly adnate to outer ray. The smaller 

 specimens are respectively 4 cm. and 3.5 cm. long, the veutrals reaching in one to 

 front of anal, in the other to vent. As will be seen from our drawing the fins are 

 finally crossbarred, more variegated than in the type. 



94. Cottus minutus Pallas. 



Described from Talek Island, Okhotsk Sea; not seen by us. 



95. Cottus aleuticus Gilbert. (Vranidea mto-osfoma Lockiogtou ; name preoccupied.) 



Abundant in the brooks of Unalaska; also recorded from Departure Bay, 

 Vancouver Island. Eecorded by Dr. Bean from Kadiak and Unalaska. 



96. Myoxocephalus nivosus (Herzenstein). (Plates LXI, LXII.) 



Cottus nivosus Herzenstein, Melanges Biologiques dd Bull. Acad. Imp. des Sci., St. Petersb., 

 XIII, 113, 1890 (Olga Bay). 



One specimen 39 cm. long, from Iturup Island. D., IX, 15; A., 13, P., 17, lat. 1., 

 33 to 35. Coloration very dark on back and sides, white below with traces of blackish 

 crossbars below the dorsal fins. Along lower part of the sides a number of large 

 roundish white spots, which are present also in a band along base of anal, but become 

 smaller posteriorly and toward middle of sides. Sides of head and body, and 

 especially the dorsal, caudal, and pectoral fins, with scattered small spots of pearly 

 white. Spinous dorsal with large roundish transparent spots, the anal margined with 

 white and marked with scattered white spots of various sizes and shapes. The 

 thickened pectoral rays largely white. Veutrals with three dusky crossbars. Lower 

 lip and mandible with white areas surrounded by dusky reticulations. 



Head comparatively deep and compressed, with large mouth, narrow deeply con. 

 cave interorbital space, and depressed concave occiput, which is bounded by strong 

 lateral crests. At the anterior end of these crests they are each accompanied on the 

 outer side by a short ridge, and on the inner side by a still shorter ridge or a small 

 tubercle. The occipital crests converge strongly toward the nape. Temporal ridges 

 are also strong. A short filament above posterior edge of orbit and one at posterior 

 end of occipital crest, each surmounting a .very low tubercle. 



Upper preopercular spine straight, directed toward opercular flap, scarcely reach- 

 ing middle of the opercle, its length two-thirds diameter of orbit. The second spine is 

 three eighths length of upper, directed downward and backward. The third points 

 downward and forward, the long interval between it and the second being smooth, 

 without spine or tubercle. The contiguous angles of subopercle and interopercle are 

 provided with prominences which are not spinelike. Opercle and suprascapula each 

 with a strong ridge ending in a spine. No scapular spine. Nasal spines small, not 

 projecting. Top of head, nape, and suborbital ring with small warts, many of which 



