20 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.63 



Color in alcohol gray-brown on back and upper surface of head. 

 Former with a number of narrow pale brown lines, especially dis- 

 tinct below spinous dorsal, and greatly inclined back, all along above 

 lateral line. Sides and lower surface of body pale, with bright sil- 

 very-whitish sheen. Fins dull brown. Pectoral ventral and anal 

 paler brown. 



Length 162 mm. 



Type.— C^t. No. 83222, U.S.N.M., northern Patagonia. Wilkes 

 Exploring Expedition. 



Only the type known. 



(Named for Patagonia.) 



LEPIDAPLOIS TROTTERI. new^ species. 



Head 2i; depth 2i; D. XII, 10; A. Ill, 12; P. ii, 15; V. I, 5; 

 scales 32 in lateral line to caudal base and 3 more on latter ; 6 scales 

 above lateral line to spinous dorsal origin, 5 above to soft dorsal 

 origin, and 11 below to spinous anal origin; 16 scales in predorsal to 

 occiput medianly ; head width 2^ its length ; snout 3 ; eye 5| ; maxil- 

 lary 2f ; interorbital 3|; last dorsal spine 4^; eighth dorsal ray 2f ; 

 third anal spine 4 ; eleventh anal ray 2f ; upper caudal lobe 1^^ ; least 

 depth of caudal peduncle 2| ; pectoral If ; ventral 1|. 



Body ovoid, rather deep, edges convex, compressed. Caudal 

 peduncle strongly compressed, length three-fourth its least depth. 



Head conic, compressed, flattened sides about evenly approximate 

 above and below. Snout conic, width 1^ its length. Eye small, 

 elevated, hind edge about midway in head length. Mouth moderate, 

 jaws even. Maxillary when closed reaches eye, as seen under pre- 

 orbital groove reaches eye center. Four large canines in front of 

 each jaw, median upper pair and outermost of each below, largest; 

 inner band of low convex teeth in each jaw, narrowing behind. 

 Lower lateral lip wide, thin. If in eye. Nostrils separate, front one 

 at least fourth in snout; hind one smaller, little higher, and little 

 nearer front one than eye. Interorbital convex. Preopercle entire, 

 sharp behind. 



Gill-rakers 7-}-ll, small, robust, lanceolate. If in filaments, which 

 are If in eye. Pseudobranchiae long as gill-filaments. 



Scales variable, with 13 to 32 basal radiating striae, few or none 

 extending apically and circuli very fine; head largely covered with 

 small scales; muzzle, most all of mandible, except near articulation, 

 and interorbital, naked; 9 rows of scales on cheek to preopercle 

 ridge ; predorsal, back and breast scales little smaller than elsewhere 

 in trunk; smaller scales than on body extend on bases of dorsals and 

 anals, well over each basal half of fin; caudal Avith basal third 

 covered with large scales; lateral line complete, largely concurrent 



