230 PROCEEDINGS OF THE ACADEMY OF [Fcb., 



head about 2\ in its len.o'th; depth of head about 1| ; snout about Sf ; 

 eye about 4; maxillary (from tip of premaxillary) about 2f ; mandible 

 2|-; interorbital space about 5f ; first dorsal spine about 5; third about 

 3; third dorsal ray about 2^; third anal spine about If^; second anal 

 ray about 2; least depth of caudal peduncle about 3|; pectoral about 

 If; ventral about If. 



Body moderately elongate, compressed, and apparently of somewhat 

 ovoid form with profiles more or less similarly convex. Greatest depth 

 apparently near middle of spinous dorsal. Caudal peduncle com- 

 pressed, and its least depth about f its length. 



Head large, upper profile more or less straight, and more inclined 

 than lower. Snout rather short, a little broad, convex above, and 

 upper jaw a little protruded. Eye rather small, high, impinging on 

 upper profile, circular, and anterior. ]\Iouth small, jaws apparently 

 even when closed, projecting, and gape falling a little short of posterior 

 nostril. jMaxillary rather small, apparently reaching middle of pupil, 

 and distal expanded extremity about i of orbit. Teeth minute, in 

 rather broad villose bands in jaws and on palatines. A small triangular 

 patch also on vomer. Nostrils adjoining, close in front of eye a little 

 above, anterior obsolete, and posterior a large cavity. Interorbital 

 space rather narrow, nearly level, only slightly concave, and with a low 

 obsolete ridge laterally. Head with many small denticles along edges 

 of bones. A double-pronged nasal spine in front of snout. Preorbital 

 denticulate, with a large broad spine in front, immediately followed 

 by a smaller curved one. A curved backwardly directed spine on 

 narrow infraorbital. Postorbital rim also denticulate, and a little 

 broader. Opercle ending in two rather small spines, upper a little 

 longer. Preopercle armed below with a long and rather narrow spine, 

 slightly curved at its extremity, and equal to y ^ of orbit, along its upper 

 edge. It also reaches a little beyond gill-opening. Serrse along margin 

 of preopercle becoming a little enlarged below. 



Gill-opening apparently extending forward till opposite middle of 

 orbit. 



Scales small, and narrowly imbricated, those forming along base of 

 spinous dorsal not spinescent. Rather small scales along base of soft 

 dorsal. Greater basal region of caudal covered with small scales. 

 Base of pectoral also with small scales. A rather short broad scaly 

 flap between bases of ventrals, and each axilla of same fins with a short 

 scale. Five series of scales on cheek. A row of rather broad scales 

 along margin of preopercle on opercle. Except occiput, and otherwise 

 stated, head naked. Lateral line at first more or less concurrent with 



