84 PROCEEDINGS OF THE ACADEMY OF [Jan., 



of head greater than length; mandible 2^; third dorsal spine 2f ; first 

 dorsal ray 1^; first anal ray 1|; upper caudal lobe 1; least depth of 

 caudal peduncle 6^; ventral 2^; snout 2f from tip of upper jaw; eye 

 3f ; maxillary 2f ; interorbital space 3|; pectoral 2f in head and trunk. 

 Body rather oblong, deep, compressed, and greatest depth at origin 

 of soft dorsal. Caudal peduncle small, its depth 2|, and its width 2 

 in its length. 



Head deep, compressed, and, upper profile oblique, slightly convex 

 at first and then more so at occiput. Lower profile less convex than 

 upper. Snout broad, oblique, compressed, slightly prominent, and 

 with upper jaw a little protruded. Eye large, a trifle anterior, and 

 without adipose eyelid. Mouth oblique, small, curved, and gape reach- 

 ing about f in vertical to anterior nostril. Mandible projecting well 

 beyond upper jaw. Maxillary free distally, its expanded portion 2 in 

 eye, and reaching below posterior nostril, but not to orbit. Lips rather 

 broad and thick. Teeth minute and in bands in jaws. Patches of 

 minvite asperities on vomer, palatines and tongue. Tongue broad, 

 rather long, obtusely rounded and free in front. Nostrils close to- 

 gether, high lateral, and much nearer upper rim of orbit than tip of 

 snout. Interorbital space broad, well elevated, and giving place to a 

 high median trenchant keel extending to spinous dorsal. Preorbital 

 broad, with several radiating flutings above, and its width about 4 of 

 orbit. 



Gill-opening deep, extending forward opposite nostrils. Rakers 

 7 + 16, II, long, slender, compressed, asperous on inner surfaces, and 

 longest half of eye. Filaments f of longest raker, and pseudobranchise 

 a little shorter. Isthmus compressed, edge not sharp. 



Scales minute, narrowly imbricated, and crowded on back in front. 

 Chest and base of pectoral naked. Cheeks and upper posterior side 

 of head scaly, otherwise naked. A low scaly sheath along base of 

 spinous dorsal. Soft dorsal and anal, except last few rays with rather 

 high or broad basal scaly sheaths. Caudal with small scales on its 

 base, and a low ridge at base of each lobe. Ventral with a deep basal 

 fissure and a row of scales running back from its upper basal portion. 

 Lateral line concurrent with back till opposite middle of base of soft 

 dorsal and then straight to base of caudal. Scutes small, weak, deepest 

 about ^ least depth of caudal peduncle. 



Origin of spinous dorsal but little behind that of pectoral, third ray 

 longest, and all depressible in a low groove. Soft dorsal with first ray 

 elongate, and those anteriorly also elevated, though much shorter. 

 Last dorsal and anal rays much longer than those immediately pre- 



