282 Annals of the Carnegie Museum. 



60. Ophicephalus tadianus Jordan & Evermann. 

 Raihii (Formosa). 



1903. Ophicephalus tadianus Jordan & Evermann, Proc. U. S. Nat. Mus., XXV, 

 P- 330; Formosa. — Jordan & Richardson, Mem. Carneg. Mus., IV, no. 4, 

 1909, p. 193; Formosa. — Vaillant, Bull. Mus. Hist. Nat., VI, 1904, p. 298; 

 Tongkiiig. 



Head 3 in length; depth 5.33; D. 44; A. 28; \'. 4; P. 16; width of 

 head 2 in its length; eye S in head; interorbital space 5; snout 6; 

 maxillary 3; mandible 2.25; pectoral 2.2; ventral 3; fifty-seven scales 

 in a longitudinal series, four scales between origin of dorsal and lateral 

 line, eleven scales between the latter and the root of ventral, sixteen 

 scales between lateral line and the middle of belly; nine scales between 

 orbit and the angle of pre-operculum. 



Body torpedo-shaped, posterior part compressed, anterior part 

 depressed; head rather elongate, depressed, its dorsal profile gradually 

 inclined anteriorly; snout more or less produced, anterior margin 

 obtusely rounded, interorbital space flat; eyes relatively small, superior 

 and exceedingly anterior; nostrils separated, superior, the anterior in 

 a short tube, in contact with the upper lip, the posterior in front of 

 eye above; mouth oblique, large, its angle extending beyond the 

 posterior margin of orbit; a band of small teeth on outer edge of jaws, 

 a band of large, wide-set, caniniform teeth on palatine and inner 

 side of lower jaw; upper jaw protractile, slightly shorter than the lower. 



Dorsal fin very long, with numerous spine-like rays, low anteriorly, 

 gradually lengthening posteriorly, when depressed the tip of fin 

 reaching beyond root of caudal; the pectoral obtusely rounded, 

 nearly twice as long as broad, reaching beyond the middle of ventral; 

 ventral fins small, not reaching vent; anal similar to the dorsal, 

 inserted beneath anterior third of the base of dorsal, when depressed 

 reaching beyond the root of caudal; caudal fin squarish, with rounded 

 tip; caudal peduncle very short, deep, strongly compressed laterally. 



Body covered with rather large cycloid scales with irregular con- 

 centric rings and radiated strise; top of head and cheeks covered with 

 large scales; lateral line discontinuous, undulating, running along the 

 center of body from base of caudal to just over third anal ray, thence 

 upward for two rows of scales, forward sixteen rows, downward one 

 row, and then forward to edge of gill-opening. 



Color in formalin oli\'aceous brown above, paler below; a row of 

 twelve dark gray blotches along the base of dorsal, ])artly on the fin, 



