BY W. MACLEAY, F.L.S. 247 



871. Hemirhamphus Commersoxii, Cuv. & Val. 



Gunth., Cat. Fishes VI., p. 271.— Bleek., Atl. Ichth. Scombr., 



tab. 6, fig 1 . 3. 



D. 13-14. A. 12. L.lat. 54. Yert. 38/16. 



The length of the entire head is contained twice and two-thirds 

 in the total (without caudal), the length of the lower jaw beyond 

 the extremity of the upper, four times and one-third. The 

 triangular part of the upper jaw formed by the intermasillaries, 

 is much broader than long. The diameter of the eye is less than 

 the width of the interorbital space, and two-thirds of the length 

 of the postorbital part of the head. The root of the ventral fin 

 is equally distant from the base of the caudal and the extremity 

 of the pectoral fins. Dorsal and anal fins scaly anteriorly — the 

 former much longer than the latter. Caudal fin deeply forked, 

 the central rays being equal in length to the diameter of the eye. 

 Back dark greenish ; sides with a silvery band and four rounded 

 blackish blotches. 



From Port Jackson to Cape Yoi'k. 



872. Hemirhamphus Quoyi, Cuv. & Val. 



Gunth., Cat. Fishes VI., p. 267.— Bleek., Atl. Ichth. Scombr., 



tab. 4, fig. 3. 



D. 16. A. 14. P. 12. L. lat. 50-55. 



Body tetrahedral, as broad as deep. The length of the head 

 is contained from three times and a half to three times and two- 

 thirds in the total length, that of the snout five times and a half 

 or six times, and that of the prominent part of the lower jaw 

 eight or eleven times. Upper jaw broader than long. The 

 diameter of the eye is contained once and one-third in the length 

 of the postorbital part of the head, and is equal to the width of 

 the interorbital space. The dorsal fin commences before the anal ; 

 the ventrals are inserted in the fourth sixth of the total length, 



