PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



87 



raargin slightly convex when opened, the principal rays twice bifurcate. 

 Pectorals small ; that of colored side contained about 8^ times in the 

 total length; rays twelve in number, once bifurcate. Pectoral of blind 

 side scarcely three-fourths as long as that of the colored side ; rays nine 

 or ten, some of them bifurcate. Veutrals very small, inserted about the 

 width of the pectoral base in advance of the anterior axil of that fin ; 

 their length contained more than live times in that of the head. Late- 

 ral line straight, passing along the median line of the side of the body 

 and of the caudal, about 140 scales from its origin to tlie base of that 

 lin. Scales very small, smooth, becoming smaller along the dorsal and 

 abdominal margins; smaller scales continuing for some distance upwards 

 and downwards on the bases of both the dorsal and anal, upon both blind 

 and colored sides, especially upon the latter, where scales cover the 

 whole surtace between a.s well as upon the rays. The bases of the pec- 

 torals and caudal are also covered with scales on both sides. On the 

 fore part of the anal, the scales reacli to the tips of the rays. The scales 

 upon the fins are much smaller than those upon the body. Scales on 

 blind side smooth; snout scaleless. Color nearly uniform dark blackish 

 gray ; the scales covered on their exposed portion witli black points, 

 which cannot be distinguished by the naked eye. Blind side opaque 

 white, with numerous small black dots evenly distributed. Fins on col- 

 ored side with the membrane light slate-color, sprinkled with small black 

 dots; the rays and scales of the same color as the body. Distal margins 

 of all the fins considerably darker. The black dots extend to the inte- 

 rior of the mouth, covering tliehyoid surfaces, and the pharyngeal teeth 

 are tipped with reddish orange. 



Dimensions. 



Total length to tip of caudal, in iuclics 



Length without caudal, about 



Greatest depth, about - 



Length of head 



Length of pectoral, blind side 



Length of pectoral, colored side 



Length of ventrals 



Diameter (longitudinal) of eye 



Width of interorbital space 



Length of snout, horizontal, from lower eye 



Distance from tip of mandible to origin of anal 



Widtli from tip of highest rays of dorsal to tips of ditto of 



8rk 



2i 



anal 



Width of caudal peduncle in narrowest part — 



Length of snout from lower eye 



Distance from tip of mandible to origin of anal 



Length without caudal, about 



Widtli from tip of dorsal to tip of anal rays 



Width of caudal peduncle 



Length of lower jaw 



Origin of anal to lateral line 



Number of dorsal rays 



Kumber of anal rays 



10^ 



lis 



h 

 it 



Xo. 4. No. 5. 





■ Damaged. 



\ Scarcely. 



