NEW FISHES 195 



MEASUREMENTS OF THE TYPE OF Gahagrci pammelas. 



Length in mm 



Head 



Depth 



Eye 



Snout 



Interorbital width ' S 



Maxillary 



Height of spinous dorsal. 



Height of spinous anal 



Height of soft dorsal 



Height of soft anal 



Pectoral 



Ventral 



Depth of caudal peduncle 



CORVULA EURYMESOPS sp. nov. 



Type. — Cat. No. 6361, Leland Stanford Jr. University Museum. 

 Charles Island. 



Diagnosis. — Closely allied to Corvida macrops Steindachner, 

 from Mazatlan and Panama. It differs most conspicuously from this 

 species in being much more slender ; in having a greater number of 

 dorsal spines — thirteen instead of twelve ; in having the tip of the lower 

 jaw slightly included (in C. ?>iacrops it reaches as far forward as the 

 tip of the snout) ; in having the interorbital space wider; and in hav- 

 ing a longer maxillary. 



Description of the Type. — Body slender and elongate, snout blunt, 

 lower jaw included; profile from tip of snout to nape about straight 

 (very slightly concave), slightl}- roimded from here to front of spinous 

 dorsal, straight and horizontal to front of soft dorsal, evenly descend- 

 ing from here to caudal peduncle. Ventral profile about same as 

 dorsal, straight and horizontal from ventrals to anal. 



Mouth oblique, at an angle of 45°. Maxillary a little greater than 

 one half of head, about equal to second anal spine. Eye four in head. 

 Anterior nostril oval, the posterior the larger. Angle of preopercle 

 rounded, ascending limb inclined somewhat forward, space between 

 its upper end and eye a little less than eye. Fifteen gill-rakers on 

 ceratobranchial, upper ones long and slender, decreasing gradually to 

 the lowest. Teeth all small, in a single series in lower jaw; in upper 

 jaw a band of small teeth, the outer ones enlarged. 



Fourth and fifth dorsal spines longest, about two and one half in 

 head ; first very small, almost rudimentary ; second a little longer than 

 half the length of the third ; third only a little shorter than the fourth ; 

 sixth to tenth rapidly decreasing in size so that tip of tenth projects 



