RHOMBOSOLEIN^L 



I. COLISTIUM NUDIPINNIS (Waite). 



[" TURBOT ".] 



Ammutretis rostralus (moh Giinther), Hutton, 1876, Trans. Proc. N.Z. Inst., viii, p. 215. 

 Ammotretis nudipinnis, Waite, 1911, Trans. Proc. N.Z. Inst., xliii, {1910), Proc. p. 50 ; Waite, 1911, 



Rec. Canterbury (N.Z.) Mus., i, p. 209, pi. xxxix ; Thomson and Anderton, 1921, Bull. N.Z. 



Board Sci. Art, ii, p. 82 ; Phillipps, 1921, N.Z. J. Sci. Tech., iv, p. 122. 

 Colistium nudipinnis, Norman, 1926, Biol. Res. " Endeavour ", v, p. 273 ; Phillipps, 1927, N.Z. 



Mar. Dept., Fish. Bull., i, p. 27. 



Colistium nudipmius. B.M. (N.H.) 1924. i .7.4. X J. 



Depth of body nearly twice in the length, length of head 35. Rostral hook long, 

 extending downwards below level of hinder end of maxillary of ocular side. Anterior 

 margins of eyes level ; diameter of eye 11 J in length of head, less than width of inter- 

 orbital space, which is naked in the middle and more or less .scaled anteriorly and 

 posteriorly. Maxillary not reaching anterior edge of eye, length on ocular side 4^, 

 on blind side 3 in that of head ; lower jaw about 3J in head ; about 12 broad tentacles 

 forming a fringe on lower lip of ocular side. Band of teeth in lower jaw about 3 times 

 as long as broad, that in upper jaw about 7 times. 32 gill-rakers on lower part of 

 anterior arch. Scales of ocular side ctenoid, the denticulations strongly developed ; 

 those of blind side cycloid ; most of the scales on blind side of head forming membranous 

 processes ; 85 scales in lateral line. Lateral line with a slight cur\e above the 

 pectoral fin ; a short supratemporal branch, reaching base of twelfth ray of dorsal 

 fin. Dorsal 80 (85) ; highest rays 2 i in length of head ; well developed membranous 

 folds, with their free edges directed posteriorly, on blind side of all rays, the folds on 

 anterior rays short, and with projecting processes. Anal 58 (60) ; similar to dorsal. 

 Pectoral of ocular side with (11) 12 rays (9 branched), length 2^ in that of head ; 

 pectoral of blind side a little shorter. Pelvic of ocular side with 7 rays, the first 

 inserted below middle of jaws of blind side, the last in advance of first ray of pelvic of 

 blind side, which has 4 rays. Caudal with 18 rays (12 branched), rounded; caudal 



