262 SCOMBRESOCID^. 



commence opposite to each other. Caudal fin moderately forked, 

 with the lobes nearly equal in length, the central rays being much 

 longer than the eye. Sides with a well-defined silvery band as 

 broad as a scale. 



Australia. 

 a-e. From 7 to 9 inches long. Australia. Presented by the Earl 



of Derby. 

 f-g. Half-grown. AustraHa. From Mr. Gould's Collection. 

 h. Adult. West Australia. From Mr. Turner's Collection. 



4. Hemirhamphus poeyi. 

 Hemirhamphus fasciatus, Poey, Mem. Cub. ii. p. 299 (not Blkr.). 

 D. 15. A. 17. Vert. 34/18. 

 The length of the head is contained thrice and two-thirds in the 

 total (with the caudal), that of the lower jaw (beyond the extremity of 

 the upper jaw) eight times. The diameter of the eye is contained 

 thrice and three-fourths in the distance between the extremity of 

 the upper jaw and the opercular margin. The distance of the point 

 of the lower caudal lobe from the root of the ventral is much more 

 than one-half of its distance from the extremity of the upper jaw. 

 The length of the pectoral is less than the height of the body ; caudal 

 moderately forked. Dorsal and anal scaly. Sides with a silvery 

 band. {Poey.) 

 Savannah, 



5. Hemirhamplius unifasciatus. 



Hemirhamphus unifasciatus, Panzatii, Nov. Comm. Acad. Sc. Inst. 



Bonon. v. 1842, p. 326, tab. 25. 

 Hemirhamphus richardi, C'liv. S) Val. xix. p. 26. 

 Hyporhamphus tricuspidatus, Gill, Proc. Acad. Nat. Sc. Philad. 1859, 



Hemirhamphus neglectus, BleeTc. Ned. Tydschr. Diei-k. iii. p. 157. 

 D. 15 (16). A. 16-17. L. lat. 52-56. Yert. 34/18. 



The length of the entire head is contained twice and three-fourths 

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

 (beyond the extremity of the upper jaw) from five times and a half to 

 six times and a half. The length of the head, without mandible, is 

 contained thrice and a third in that of the trrmk, without head and 

 caudal. The triangular part of the upper jaw, formed by the inter- 

 maxillaries, is broader than long. The diameter of the eye is rather 

 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 nearly midway between the eye and the base of the caudal. 

 Dorsal and anal fins scaly, the former a little longer than the latter. 

 Caudal fin moderately forked, the central rays being longer than the 

 eye. Back dark greenish, sides with a well-defined silvery band as 

 broad as a scale. 



Atlantic coasts of Tropical America ; Pacific coast of Panama ; 

 Indian Ocean. 



