80 PROCEEDINGS OF THE ACADEMY OF [Jan., 



Tipper curved portion of lateral line; width of head 2jL in its length: 

 depth of head 1; mandible 2; third dorsal spine 2^; second dorsal ray 

 1|; second anal ray 2; least depth of caudal peduncle 7; ventral 2J; 

 snout 3^ from tip of upper jaw; eye 3§; maxillary 2^; interorbital 

 space 3y%; pectoral 3 in body; upper caudal lobe 3^. 



Bod}^ oblong, compressed, upper profile a little more convex than 

 lower, and greatest depth at origin of soft dorsal. Caudal peduncle 

 rather long, its least depth 2J, and in its width 2^ in its length. 



Head deep, compressed and upper profile obliquely convex. Snout 

 oblique, blunt, and with upper jaw projecting. Eye small, anterior, 

 and with a rather narrow posterior adipose eyelid. ^louth o1)lique, 

 gape reaching below nostrils, and mandible projecting beyond upper 

 jaw. Maxillary reaching opposite anterior margin of pupil, with its 

 distal expanded extremity free from prcorbital above and about equal 

 in width to f of eye. Lips thick and fleshy. An outer series of en- 

 larged teeth in upper jaw becoming a little larger anteriorly, and a 

 double or irregular series of small inner teeth. Teeth in mandibles 

 subequal, rather large, and with 6 or more forming a small outer series 

 in front. Vomer, palatines and tongue with patches of minute teeth. 

 Tongue elongate, rounded and free in front. Nostrils small slits close 

 together, lateral, high, and near front rim of orbit. Interorbital space 

 rather narrow, elevated, and with a median trenchant ridge originating 

 above nostrils and continued to occiput. A low supraocular ridge. 

 Preorbital broad, fluted above, and about equal to f of orbit. Margin 

 and ridge of preopercle oblique. 



Gill-opening deep, extending forward opposite nostrils. Rakers 

 7-hl6, slender, compressed, a little shorter than filaments or about 

 half of orbit. Pseud obranchise rather small. Isthmus rather narrow, 

 with a slight groove. 



Scales small, cycloid, and narrowh^ imbricated. Head, with excep- 

 tion of cheek, upper side and opercle, naked. Base of spinous dorsal 

 with a low scaly sheath, and anterior basal portions of soft dorsal and 

 anal with scaly sheaths. Base of caudal covered with small scales and 

 base of each lobe with a low obsolete ridge. Base of pectoral naked. 

 Anterior rays of soft dorsal and anal with small scales. Lateral line 

 straight after fifth dorsal ray, and deepest shields about 8^- in greatest 

 depth of body. 



Origin of spinous dorsal well behind that of pectoral, spines rather 

 rigid, third longest, and all depressiblc in a groove. Soft dorsal in- 

 serted midway between front of orbit and base of caudal, anterior rays 

 elevated in a lobe, and last ray a little longer than those immediately 



