BY J. DOUGLAS OGILBY. 87 



ventral fin is IJ, of the pectoral 1| in that of the head, and the 

 caudal fin has fourteen rays. The lower surface of the head, 

 lips, cheeks, and abdomen are white, and the vertical fins are 

 brown with a conspicuous whitish border. 



In addition to those mentioned at the end of the generic 

 description (loc. cif. p. lo9), there is a single large pore a))0ve 

 the upper angle of the gill-opening; there is no indication what- 

 ever of a lateral line. 



The specimen measures 69 millimeters. 



Diii^matichthi/s consohrinus, Hutton, from the New Zealand 

 coast, is said by Hector to have two small spines in front of the 

 dorsal fin and may belong to Dermitopsis (see Trans. N.Z. Inst, 

 viii. 1876, p. 217, and ix. 1877, p. 466, PL ix. f. 77a). 



M o N T II R I X, gen.nov. 



Body rather elongate and compressed, especially behind: head 

 moderate, the snout short and blunt; mouth anterior and rather 

 wide, with moderate, oblique cleft. Premaxillaries slightly pro- 

 tractile, forming the entire dentigerous portion of the upper jaw; 

 maxillary narrow in front, abruptly expanded behind, extending 

 backwards well beyond the eye; anterior border of the expanded 

 portion bent forwards so as to form a conspicuous odontoid 

 process. Nostrils supero-lateral, of equal size, widely separated, 

 and surrounded by a skinny vesicular lip. Eyes small and 

 supero-lateral, covered by transparent skin. Opercles covered by 

 a continuous skin; opercle with two strong spines, only the upper 

 of which pierces the skin. Gill-openings large, extending 

 forwards beyond the vertical from the distal extremity of the 

 maxillary ; isthmus narrow ; seven branchiostegals ; pseudo- 

 bran chi?e present; gill-rakers in very small number, tubercular. 

 Jaws with a narrow band of minute villiform teeth anteriorly, 

 succeeded after a considerable interspace by a series of short, 

 stout, caninoid teeth, which extend backwards along the sides of 

 the rami; a crescentic band of minute teeth on the vomer with a 

 few larger ones interspersed, the outer tooth on each side much 

 enlarged; palatine teeth in a long, narrow band with the outer 



