PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 101 



level with the upper margin of the lower eye. Both iiiterinaxillari(^s and 

 mandibles are distorted, their symphyses bent round toward the colored 

 side. Teeth small, short, bioad, nearly equal, closely set, forming a 

 uearly continuous cutting edge on the blind side in both jaws; about 40 

 teeth in the intermaxillary and 45 in the mandible on the blind side, and 

 l*-3 on the colored side of each jaw, in a specimen 12^^" long. Pharyn- 

 geal teeth blunt, broad, similar to those of jaws ; each upper pharyngeal 

 bone M'ith about 12 teeth ; each lower pharyngeal bone with a double 

 row of teeth. Lower i)haryngeals stout, separate. Gill-rakers of lirst 

 arch lathei- slender, about one-fourth as long as the eye, the others d(v 

 creasing regularly to the fourth arch, on which they are almost tuber- 

 cular. Dorsal commencing over the centre of the pupil of the upper 

 eye, considerably behind the i)osterior nostril of blind side ; the number 

 of rays very variable, the longest (o9th-40th about) more than J of the 

 length of the head. Anal with a horizontal spine, its first ray arising 

 at a vertical about the width of the pectoral base behind the posterior 

 pectoral axil; the number of rays very variable; the longest (C. 18-20) 

 opposite to those of the dorsal. Dorsal and anal coterminal at a dis- 

 tance from the caudal exceeding the depth of the caudal peduncle. 

 Caudal truncated posteriorly, the outermost principal rays only very 

 slightly longer than the central ones when closed, so that the fin when 

 oi)ened is slightly convex, the rays once bifurcate only. Pectoral of 

 colored side usually about ^ of the total length ; the rays mostly once 

 bifiu-cate, the two first excepted. Pectoral of blind side usually con- 

 siderably shorter than that of the colored side; rays bifurcate, except the 

 first three. Ventrals inserted with their posterior axil nearly in a line 

 with the anterior axil of the base of the pectorals, their posterior ex- 

 tremity extending about to the anal spine ; the posterior four rays bifur- 

 cate once or twice. Scales very small, smooth, extending over the head 

 to the nostrils and over the base of the caudal, but not on the dorsal or 

 anal. Snout and lower jaw scaleless. Scales of blind side similar. 

 Each scale is sub-elliptical, longer than deep. Lateral line raised ante- 

 riorly, and with a very slight arch o^^er the pe(;toi'al, thence straight 

 to the end of the caudal ; about 103-108 scales (in specimens 11A-13| 

 long) from base of caudal to head. Accessory lateral line ending at 

 from the 26th to the 28th ray of the dorsal; an accessory line on the 

 blind side also of about the same length. Color of body uniform 

 reddish brown, sometimes spotted darker when fresh, especially in 

 small specimens. Left side uniform whitish. Smaller specimens 

 lighter in tint than larger. 



