402 SQUALID^. 



she was taken. The young are produced at various periods 

 from June to November." 



The whole length of the specimen described was eighteen 

 inches ; the top of the head flat ; the temporal orifices large, 

 and seen from above : first dorsal fin commencing at one- 

 third of the whole length ; rather small in size ; front edge 

 convex, concave behind; the point of the spine preceding the 

 fin half as high as the fin : the second dorsal fin half-way be- 

 tween the first and the end of the tail ; small in size, with a 

 spine as high as the fin : the nose rather pointed ; the eyes 

 lateral, elongated horizontally ; temporal orifices behind, large, 

 but above the line of the eye ; nostrils small, with a minute 

 valve ; mouth semicircular, when quite open nearly round ; 

 the teeth from the centre of both jaws with points projecting 

 outward on each side, the edges sharp ; pectoral fins large, 

 commencing half-way between the snout and the first dorsal ; 

 anal fins small, placed intermediate, in a vertical line, be- 

 tween the first and second dorsal ; no anal fin ; tail powerful, 

 upper membrane broad, the lower anterior part triangular, 

 ending in a slip prolonged backward. The upper part of 

 the head, body, and fins, slate grey ; under parts yellowish 

 white ; young specimens generally exhibit a few white spots. 

 Skin moderately rough on passing the finger upwards towards 

 the head ; in the contrary direction quite smooth. 



