NEW FISHES 



197 



MEASUREMENTS OF Corvula eurymesofs AND Corvula 



macrops. 



SCI^ENA PERISSA sp. nov. 



Type. Cat. No. 6360 Leland Stanford Jr. University Museum. 

 Tagus Cove, Albemarle Island. 



Diagnosis. Distinguishable from any other member of the genus 

 by the weakly serrated preopercle, enlarged anal spine and the small 

 number of spines in the dorsal. 



Description of the Type. Length 183 mm. ; depth two and three 

 fifths; head about three; upper profile of body strongly convex, 

 greatest depth at front of soft dorsal ; ventral profile much less con- 

 vex, evenly rounded ; snout blunt, rounded ; lower jaw included, sym- 

 physis nearer vertical from anterior nostril than from point midway 

 between anterior nostril and snout. Tip of snout slightly lower than 

 anterior nostril, strongly receding to mouth; mouth nearly horizontal; 

 profile from snout to nape almost straight. Snout below tip with eight 

 pores, a large slit-like pore on each side, three just above mouth, three 

 very small ones just above these; symphysis with five pores, one 

 small, slit-like, median one, two on each side, of which the posterior is 

 the larger. Teeth small, in bands along sides of jaws, the outer ones, 

 especially in upper jaw, enlarged ; bands in lower jaw wide in front, 

 tapering posteriorly ; no vomerine teeth. Anterior nostril lower and 

 smaller than posterior. Suborbital a little narrower than vertical 

 diameter of eye. Ascending limb of preopercle very weakly serrated, 

 inclined forward ; space between its upper end and orbit equal to 

 vertical diameter of eye. Opercle with wide membranous flap on 

 posterior border above angle. 



