PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 469 



I have examined many Alaskan specimens of Anoplarchus without 

 finding one that has as many spines and anal rays as A. alectrolophus. 

 (Pallas) Jor. & Gilb. 



11. Muraenoides omatua (Girard) Gill. 



29813 (113). Wrangel, Alaska. Aug. — , 1881. 

 Ten individuals varying in length from 3i to 7| inches. The largest 

 has the following radial formula ; D. 87 ; A. II, 38. 



12. Gobiua Nicholsii, new species. 



The type of the present description (catalogue number 29803, collec- 

 tor's number 78) was secured by Captain Nichols at Departure Bay, 

 British Columbia, July 26, 1881. It was found at a depth of 20 fathoms. 



The species is closely related to Coryphopterus glaucofrcenum Gill but 

 differs from this in (1) its radial formula, (2) relative proportions, and 

 (3) coloration. 



The extreme length of the single typical specimen is 112 millimeters 

 (four and two-fifths inches). 



The body is stout, compressed, its greatest height under the middle 

 of the spinous dorsal contained 6 times in the extreme length given 

 above. The least height of the tail is about equal to the greatest width 

 of body. The length of caudal peduncle equals nearly one and one-half 

 times its height. 



Head scaleless, nape showing mere traces of undeveloped scales. 

 The width of head exceeds its greatest depth and equals two-thirds of 

 its length. The length of head is contained four and two-thirds times 

 in extreme length. The eyes are sei)arated by a narrow interspace 

 equal to one half of their long diameter. The obtuse, declivous snout 

 is about as long as the eye. Nostrils double, not tubular, close together 

 near eye, in a line with pupil. The intermaxillaries are slightly pro- 

 tractile downward. The upper jaw extends to the vertical through the 

 anterior edge of pupil ; the mandible, to below middle of pupil. The 

 eye is one-fourth as long as the head. On the vertex and nape there is 

 an inconspicuous median fold of skin simulating a crest. The lower 

 jaw protrudes very slightly. Teeth in the jaws slender, conical, slightly 

 recurved, pluriserial, the outer series somewhat enlarged ; no canines. 

 Gill-openings separated by a wide isthmus. 



Distance of spinous dorsal from snout equals twice length of its base, 

 and, also, twice height of body at veutrals. The first spine equals one- 

 half length of head. The second spine is one-half as long as base of 

 second dorsal. The last spine is as long as lower jaw. The dorsals are 

 separated by a very small space, scarcely equal to that between the 

 eyes. The last two rays of the soft dorsal are almost as long as head 

 and more than twice as long as the first ray. 



The vent is midway between end of snout and origin of middle caudal 



