1 66 



ii. Cyclocheilichthys megalops Fowl. 



Cyclocheilichthys megalops Fowler, Proc. Acad. Nat. Sc. Philadelphia (2) LVII, 

 1905, p. 483- 



,,Head 3; depth 3; 0.3, 1.8; A. 3.6; P. i.iS; V. 1.9; scales 

 32 in lateral line to base of caudal, and 3 more on latter; 

 12 scales before dorsal; 7 scales obliquely back from origin 

 of spinous dorsal to lateral line; 5 scales obliquely forward 

 from origin of spinous anal to lateral line; width of head 2 ! / 8 

 in its length; depth of head, over middle of orbit, i 4 / 7 ; snout 

 2 3 / 4 ; eye 3; maxillary 3 ! / 2 ; interorbital space 3 ! / 2 ; length of 

 depressed spinous dorsal a trifle more than head; of anal i 1 ^; 

 of pectoral T ! / 3 ; of ventral i*/ 4 ; least depth of caudal peduncle 2 1 / 2 - 



Body moderately elongate, well compressed, and greatest 

 depth about origin of dorsal, so that back is a little elevated. 

 Upper profile nearly straight from tip of snout to origin of 

 dorsal. Caudal peduncle compressed, its least depth about i l j B 

 in its length. 



Head compressed, moderately long, and upper profile hori- 

 zontally oblique and straight. Snout rather long and obtuse. 

 Eye large, longer than deep, a little anterior and high. Pupil 

 large, vertical. Mouth inferior and terminal, upper jaw about 

 even with tip of snout. Lips rather thin and transversely plicate. 

 Tongue little free or distinct. Mandible inferior, not extending 

 forward opposite tip of upper jaw. Upper jaw protractile. A 

 small pointed maxillary barbel at corner of mouth. Nostrils 

 adjoining, close in front of upper orbital rim. Preorbital long, 

 about 7 / 8 of length of horizontal orbital diameter. Interorbital 

 space flattened, a trifle concave medianly. 



Gill-opening lateral, not extending quite as far forward as 

 posterior margin of orbit. Rakers 3+5, soft fleshy slender 

 processes, much shorter than filaments, which are about equal 

 to horizontal diameter of pupil. Isthmus broad. Scales large, 

 arranged in parallel horizontal series, and cycloid. A row of 

 scales along base of dorsal and anal, each forming an adnate 

 sheath. Base of caudal scaly. A scaly pointed flap at inner 

 base of pectoral. Head and fins with these exceptions naked. 

 Skin of head with numerous parallel striae or plications, trans- 

 verse above and vertical laterally. Lateral line of single tubes 

 continuous, a little decurved at first till horizontal. 



Origin of dorsal about opposite that of ventral, nearer base 



