Dr. A. Giinther on Australian Reptiles and Fishes. 67 



having the anterior half of the second dorsal fin replaced by a 

 pad of fat, from which the rays gradually emerge behind ; the 

 anterior portion does not contain any rays. It is therefore im- 

 possible to give an exact number of dorsal rays. The anal fin 

 is composed of about eighty-five rays. The nasal barbel extends 

 to the origin of the dorsal fin ; none of the others reach beyond 

 the extremity of the pectoral. The eye is one-seventh of the 

 length of the head. Entirely black. 



Cape York, Nicol Bay. 6 inches long. 



NeosiJurus Hyrtlii (Steindachner), from Rockhampton, is evi- 

 dently closely allied to this species. 



73. Ewocoetus atrodorsalis, sp, n. 

 D. 8-9. A. 10. L. lat. 35. 



Closely allied to E. hillianus. The pectoral extends to the 

 end of the dorsal. The ventral fin is scarcely nearer to the 

 root of the caudal than to the end of the snout, extending to 

 the origin of the anal. Dorsal fin elevated, its longest anterior 

 rays being as long as the head; it commences in front of the 

 anal. Upper pectoral rays blackish, lower whitish ; dorsal fin 

 entirely black. 



Cape York. 5 inches long. 



74. Hemiscyllium trispeculare (Rich.). 

 Turtle Island, Cape York. 



75. Crossorhinus tentaculatus (Ptrs.). 

 Adelaide, Cape York. 



76, Tricenodon obesus (M. & H.). 

 Red Sea, Aneiteum. 



77. Try gonorhina fascial a (M. & H.). 

 ?NewSouth Wales (Kreff"t). 



Addendum. 



Holacanthus Duhoulayi, sp. n. 

 D H A A 



^' 23* ■^" 20" 



Allied to H. mesoleucus. Scales small. Prseopercular spine 

 with a scarcely perceptible groove, reaching to the vertical from 

 the hind margin of the operculum. Dorsal and anal fins rounded 

 posteriorly. Head with the anterior part of the trunk yellowish, 

 which colour is sharply defined from the remaining brown por- 

 tion. A very broad brown ocular band, broader than the eye, 



5* 



