1906.1 NATURAL SCIENCES OF PHILADELPHIA. 115 



circular, and a little high and anterior. Adipose eyehd broad poster- 

 iorly, and covering a good portion of iris. Mouth obliquely vertical, 

 rather small, and mandible well protruded. Maxillary reaching op- 

 posite front margin of eye, and its distal expanded extremity a trifle 

 less than pupil or about f of orbit. Teeth minute, in bands in jaws, 

 and also present on vomer, palatines and tongue. Tongue long, 

 rather narrow, with rounded tip, and free in front. Lips thin, except 

 lower on side of mandible. Interorbital space elevated and with a 

 median elevated trenchant keel extending to occiput. Nostrils adjoin- 

 ing, near upper .front rim of orbit and posterior larger. 



Gill-opening extending forward about opposite posterior nostril. 

 Rakers 10+33, slender, compressed, and longest f of orbit. Fila- 

 ments about -f- length of longest rakers, and pseudobranchiae about 

 same size. Isthmus narrowly compressed, and its edge not trenchant. 



Scales small, cycloid, and forming convex series bulging posteriorly 

 over costal region. A few small scales on occipital region, postocular 

 region, and on opercle above, head otherwise naked. Spinous dorsal 

 and anal depressible in narrow scaly sheaths. Soft dorsal and anal 

 anteriorly with basal scaly sheaths and rays more or less depressible 

 within. Lateral line convex anteriorly, its bulge about equal to If 

 in straight portion, and no keel. 



Spinous dorsal small, inserted nearly midway between tips of upper 

 jaw and pectoral, and fom-th or fifth spine probably longest (damaged). 

 Soft dorsal inserted nearly midway between front rim of orbit and 

 base of last dorsal ray, a little in front of straight part of lateral line, 

 and first few rays elongated a little. Soft anal similar, inserted a 

 little in advance of soft dorsal. Origin of spinous anal about last 

 third in space between origin of ventral and that of soft anal, second 

 spine probably a little longer (first damaged). Caudal rather large, 

 lobes slender, pointed, and upper much longer. Pectoral long, slender, 

 and reaching about opposite first third of base of anal. Ventral in- 

 serted a little behind origin of pectoral, small, both fins depressible in 

 a groove extending to and containing vent, and when depressed thus 

 reaching J of space to spinous anal. 



Color in alcohol more or less silvery, and back above brownish. A 

 small dull or pale brown spot on upper edge of opercle. Head pale 

 brown above. Eye dull brassy. Fins pale brownish, spinous dorsal 

 and upper anterior dorsal rays with a little brownish. A blackish 

 blotch at base of upper caudal lobe. 



Length 6f inches. 



Type No. 11,198, A. N. S. P. West Africa. Dr. H. E. Savage. 



