FLATFISHES. XORMAX. 273 



Synopsis of the Species. 



I. Rostral hook long, extending downwards below level of 

 posterior end of maxillary of ocular side; right pelvic 



with 7 rays 1. nudipinnis 



II. Rostral hook short, not reaching level of posterior end of 

 maxillary of ocular side; right pelvic with 10 to 11 

 rays 2. guntheri 



1. Colistinm nudipinnis. 

 [Turbot.] 



Ammotretis restrains (non Giinther), Hutton, Trans. 

 Proc. N. Zealand Inst, VIII, 1876, p. 215. 



Ammotretis nudipinnis, Waite, Trans. Proc. N. Zealand 

 Inst, 1910, pt. ii, p. 50 ; Rec. Canterbury Mus., 1, 1911, 

 p. 209, pi. XXXIX. 



Depth of body nearly twice in the length, length of 

 head 3f. Rostral hook long, extending downwards below 

 level of posterior end of maxillary of ocular side. Lower 

 eye level with upper, diameter of which is less than inter- 

 orbital width and 11-J in length of head ; interorbital 

 space more or less scaly anteriorly and posteriorly, 

 naked in the middle. Maxillary not reaching anterior 

 edge of eye; length of lower jaw of ocular side about 

 3^ 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. Lower pharyngeals rather narrow, scarcely 

 expanded posteriorly, about 4 times as long as broad, 

 more or less in contact for anterior | of their length; 

 teeth narrow, pointed, mostly curved, those on outer 

 edges somewhat smaller than the remainder. 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 

 a longitudinal series just above lateral line, 34 between 

 lateral line and highest point of dorsal profile. Lateral 

 line with a slight curve anteriorly; a short accessory 

 branch reaching base of twelfth dorsal ray. Dorsal 80 

 (85); free parts of anterior rays not serrated; longest 

 rays 2^ 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 



