461 



DASYATIS, Rafinesqiie, 1810. 

 ( ? ) Dasyatis brevicaudatus, Hutton. 

 Trygon thalassia, Hutton: Cat. Fish., N.Z., 1872, p. 85. 

 Trygon brevlcaudata, Hutton : Ann. Mag. Nat. Hist., (4), 

 , 1875, p. 317. 



Dasyhatis hrevicaudatvs, id.: Index Faunae N.Z., 1904, p. 53. 

 Dasyatis brevicaudatus, McOulloch : ''Endeavour" Sci. Res., 

 p. 102, pi. XV., fig. 1, pi. xvii., fig. 1. 



Sting Ray. 

 Station 2, 22 fathoms. A smooth-backed Sting Ray, 

 presumed to be of this species, was thrown overboard before 

 it could be further examined. 



XVI 



111 



Family BERYCIDAE. 



TRACHICHTHODES, Gilchrist, 1903. 



Trachichthodes lineatus, Cuvier and Valenciennes. 



Beryx lineatus, Cuv. and Val. : Hist. Nat. Poiss., iii., 1829, 

 p. 226. Gunther: Cat. Fish. Brit. Mus., i., 1859, p. 13. 



Beryx mulleri, Klunzinger: Sitz. Akad, Wi&s. Wien., Ixxx., 

 1880, p. 359, pi. iii., fig. 1. 



Swallow-tail. 

 B. viii.; D. vi. 14; A. iv. 14; P. 14; V. i. 7; C. 18+10; 

 L. lat. 51; L. tr. 6-j-15. 



Tjength of head 3*17, height of body 2*6, and length of 

 caudil 2*01 in the length, diameter of eye 2*6, interorbital 

 space 3*5, and length of snout 3'9 in the head. 



Head short, deeper than long, its profile steep and 

 straight. The eye is round, half the depth of the head at the 



orbit ; its hinder edge lies midway 

 between the posterior nostril and 

 the margin of the opercle. The' 

 hinder nostril is the larger, and the 

 bridge is comparatively narrow. The' 

 maxilla extends slightly beyond the 

 middle of the eye; it is greatly 

 broadened behind, its distal portion 

 being fully half the diameter of the 

 orbit; a .jagged spine at its upper 

 end, the base of which is received 

 into a notch in the preorbital. Tur- 

 binal bones with sharp spines; edge' 

 of preorbital finely serrated ; infra- 

 orbital and supraciliary bones rough-^ 

 ened. The interorbital ridges arise 

 Trachichthodes lineatus, together in a rosette; their outer 

 C. and V. 



