556 A COLLECTION OF FISHES FROM SUMATRA. 



SOLEID^. 



248. Cynoglossus os sp. nov. Plate XXII, upper figure. 



Head 3^; depth 3| ; D. about 102; A. about 4 — 76; caudal 8; space between 

 tip of snout and upper eye 2^ in head ; mouth cleft 54- ; upper eye 5^ in space to 

 tip of snout; interorbital space b^; scales in lateral line, from above branchial 

 aperture to base of caudal, about 86 ; about 40 scales in a transverse series at 

 deepest part of body ; 12 scales between lateral line at same point. 



Body elongate, greatly compressed, sinistral, and greatest depth would fall 

 about first two-fifths of length of fish. Tail long, tapering narrowly posteriorly. 



Head large, profile evenly rounded above and below\ Snout rather long, com- 

 pressed and rounded. Eyes small, close together, and upper nearly altogether in 

 advance of lower. Posterior margin of lower eye a little nearer gill-opening than 

 anterior margin of upper eye is nearer to tip of snout. Mouth large, its cleft hori- 

 zontal. Teeth rather fine, sharp pointed, and in bands only on dextral side of jaws. 

 Sinistral side of jaws with a labial fringe of small fleshy flaps. Tongue rather 

 thick, rounded and little free. Upper nostrils damaged. Lower nostril a small fleshy 

 tube below and anterior to lower eye, or hardly below middle of upper. Inter- 

 orbital space rather narrow and flattened. 



Gill-opening small, membrane broad and forming a broad fold over narrow 

 compressed isthmus. Rakers none. Gills small, filaments small. 



Scales small, ctenoid, and spread over entire body, except on fins. Lateral 

 system of mucous pores double along trunk, median series begins near tip of snout 

 and runs direct to caudal. Upper series confluent with this at its origin, and again 

 about midway between upper eye and gill-opening, extending along upper portion 

 of body close to and just below dorsal fin, then out on fifth ray from caudal. A 

 system of mucous pores runs down from intersecting series, between eyes and gill- 

 opening, and across side of head. Also another series of pores from front of eye 

 obliquely down to lower margin of snout. No pores on dextral side of fish. 



Confluent with caudal are long dorsal and anal, former divided at first by 

 anus so that first four rays are separated from rest of fin. Caudal rather long 

 and pointed. 



Color in arrack, sinistral side pale olive, finely mottled with darker. Dextral 

 side a livid whitish or brownish-white. Fins pale brown. 



Length 5 inches. 



Ty.pe No. 27,816, A. N. S. P. Padang. 



One example. It is close to C. suviatranus Bleeker, and agrees with the same 

 author's figure except that there is no oblique series of tubes before the eye. 

 Seventy scales are given for the lateral series while my example shows about 

 eighty-six scales in the lateral line. 



{Os, mouth.) 



