546 



BULLETIN 188, UNITED STATES NATIONAL MUSEUM 



scarcely canine teeth, and the most posterior tooth on each ramus of 

 the lower jaw is a small canine. The second and third dorsal spines 

 are greatly prolonged in fully grown males. 



The group name pZ« hu is usually applied to this fish. A special ver- 

 nacular name, shared with several related species, is pla hu hua to 

 (big-head goby). 



CTENOGOBIUS CEPHALOPARDUS, new species 



Figure 106 



DescHption. — Body elongate, moderately compressed posteriorly, 

 cylindrical anteriorly; depth of body about 6 in standard length; 

 length of caudal peduncle 4.25 in standard length, its depth 0.5 its 

 length; head depressed, flattened, its length 3.3 in standard length; 

 eye dorsolateral, protruding above dorsal profile, about 4.4 in head, 1.3 

 in snout, and 1.5 times the bony interorbital space ; mouth large, nearly 

 horizontal, lips broad, maxillary reaching under middle of eye, lower 

 jaw slightly projecting; teeth in both jaws pluriserial, outer row con- 

 sisting of long, curved, slender caninoid teeth ; tongue rounded. 



Figure 106. — Ctenogobius cephalopardus, new species: Type (U.S.N.M. No. 119580). 

 Drawn by Mrs. Alice C. Mullen. 



Squamation: Body covered with ctenoid scales, which are lacking 

 on the breast and on base of pectoral fins ; scales in lengthwise series 

 about 31 (excluding small scales on caudal fin), in transverse series 

 from origin of second dorsal to origin of anal 9, predorsal scales 6 or 7, 

 more or less imbedded; circumpeduncular scales 12; head entirely 

 scaleless; on predorsal region some scales extending forward on sides 

 to a point about over midlength of opercle. 



Fins : Dorsal rays VI — I, 8, longest spines and rays somewhat more 

 than 0.5 head ; caudal fin evenly rounded, 0.7 head ; anal fin similar to 

 second dorsal, rays I, 7 ; ventral disk rather short, circular, about 0.5 

 length of head, f renum bilobed ; pectorals slightly shorter than head. 



Coloration: Above yellowish brown, each scale of back, side, and 

 abdomen with a pale reddish brown rounded spot ; side of head from 



i 



