64 PROCEEDINGS OF THE ACADEMY OF [Jan., 



with small scales. Base of inner ventral ray scaled anteriorly. Lat- 

 eral line well curved convexly below origin of spinous dorsal, then de- 

 scending rather steeply till about opposite first third in base of dorsal 

 fin and continuing thence straight to base of caudal. Cutaneous keel 

 along side of caudal peduncle not conspicuous. Tubes of lateral line 

 simple. 



Dorsal spines low, third longest and others graduated down. Origin 

 of this fin nearly midway between middle of orbit and origin of soft 

 anal in vertical. Soft dorsal inserted a little nearer tip of snout than 

 base of last dorsal ray, and first ray longest, others graduated down 

 though no lobe is formed. Soft anal similar, inserted far behind anal 

 or about midway between origin of ventral and base of last anal ray. 

 Caudal rather small, forked, and lobes apparently pointed. Pectoral 

 broad, short, origin about level with lower margin of eye. ^'entral 

 long, pointed, inserted below bases of lowest or last pectoral rays, and 

 reaching f of space to origin of spinous anal. Ventral spine small and 

 thin, and last ray united to abdomen by a membrane. Anus midway 

 between tip of depressed ventral and origin of spinous anal. 



Color in alcohol deep brown, back and upper surface darker. Lower 

 surface pale brownish. Fins brownish. Pectoral deep brown. \'en- 

 trals with front margins of spine and rays light or pale, rest of fin more 

 or less duskj;- or dull blackish-brown. Side with five broad deep brown 

 transverse bands, rather regular, and spaces between much narrower. 

 First band extends from space just before spinous dorsal down to side 

 of chest including base of pectoral in its course. Second extends from 

 spinous dorsal. Third extends from bases of anterior long dorsal rays 

 toward vent and tip of ventrals. Fourth extends down on bases of 

 long anterior anal rays. Fifth includes last rays of both dorsal and 

 anal. Base of caudal also of same color. Transverse bands also be- 

 come paler or more or less fade out below. Iris dull yellowish. Peri- 

 toneum pale. 



Length (caudal damaged) 6g inches. 



Type No. 11,379, A. N. S. P. West coast of Mexico. Dr. Wilham 

 H. Jones. One example. 



This species is provisionally separated from Nmicrates dudor b}^ the 

 more robust or deeper form of the body, the ventrals reaching back till 

 the front margin of the vent is midway between in the space to the 

 origin of the spinous anal, and the much larger scales. 



Dr. Gill first pointed out the differences between this form and N. 

 dudor, basing the examination apparently on one of the examples in 

 the Bonaparte collection, now before me, and an example from Hono- 



