FISMKS — WAI'I'K. 



4") 



are absent from the collection, having, it is supjiosed, been 

 inadvertently returned to the water by some of the seamen. 

 Medium sized examples : they were ol)tained at the extremes of 

 21 and 4(S fathoms. Hitherto we had known only large specimens; 

 it would, therefore, appear that this is a deep water form, only 

 the largest individuals trending shoreward. The type specimens 

 were taken in 40 to GO fathoms outside Port Jackson ; as this was 

 pre\iously the 0)ily known habitat we are able to extend its range 

 slightl}- to the northward ; Stations 24 and 25 Ijeing off Newcastle, 

 while Station 1 1 is intermediate between that area and Port 

 Jackson. 



The following description and figure, together with the plate, 

 are taken from the type specimen. As this is a skin only, the 

 productions are not wholly satisfactory. 



Disc anguhir, its breadth eijuals its length to the extremity of 

 the ventrals, the anterior margins rather straight, forming an 

 obtuse angle. Snout to 

 the middle of the eyes 

 three times the width of 

 the interorbital space. 

 Spiracle rather larger 

 than the eye, width of 

 jaws half the length of 

 the snout in front of 

 them. Caudal shorter 

 than the disc, its spine 

 very large, equal to the 

 length of the snout 

 below, the edges closely 

 beset with retrose spin- 

 ules, the extreme tip 

 and basal portion ex- 

 cepted, its insertion 

 nearer the extremity of 

 the tail than the axis of 

 the pectoral. Dorsal fin 

 comparatively large. Caudal membrane deep. Teeth obtuse, in 

 about 18 rows in the upper jaw. Skin quite smooth. Colour 

 above, and the margins of the disc below, uniform dark brown, 

 other parts yellow. 



Macleay has pointed out the main distinction between this 

 species and T. testaceus, and the accompanying figure (fig. 3) 

 shows the great comparative size of the dental lamellae ; other 

 features are the broader and more angular disc, shorter tail, larger 

 dorsal and rounder and broader caudal. 



Fig. 3. 



