584 NOTES FROM THE AUSTRALIAN MUSEUM. 



diameter apart. The upper profile of the head is rounded, and 

 the upper jaw is slightly the longer when the mouth is closed. 

 The mandible is armed with a single row of closely set recurved 

 cardiform teeth with a greatly developed lateral canine on each 

 side which fits into a groove in the roof of the mouth ; the teeth 

 are similar in size and number to those of the mandible, with the 

 exception of the lateral canine, which is barely J of the size of 

 that of the lower jaw. The dorsal fin commences above the 

 anterior margin, and does not quite reach to the root of the caudal? 

 though its posterior rays extend more than half its length, but are 

 nowhere joined to it. The anal commences beneath the 

 seventeenth dorsal ray, and extends to the root of the caudal fin, 

 but is not joined to it by membrane ; the rays of both fins are 

 simple throughout their entire length. The other fins are but 

 little developed. Colors, alternately dark and light ash, the dark 

 bands being twice the width of the light, and being most defined 

 at the margins. All the fins opaline, the dorsal with a black 

 margin narrowly edged with white ; the black margin however 

 broadens out into distinct blotches on the anterior half of the fin. 



We have received a fine example of GastrotokeMs biaculeatus, Bl., 

 hitherto only recorded from North Australia, from Mr. C. S. 

 Jarrett, who obtained it at Ballina, Richmond River ; this species 

 is hitherto unrecorded from N. S. Wales. 



