18/1.] IN THE BRITISH MUSEUM. 6/1 



forked. Scales not very small. Upper parts green, sides and lower 

 parts silvery, with numerous brown dots. 



One example, 23 inches long, has been obtained by Dr. B. Meyer 

 at Manado. 



Hemirhamphus acutus. 



D. 13. A. 17. L. lat. 53. 



The length of the head is somewhat more than one third of the 

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

 tremity of the upper jaw) a little more than one half of the length 

 of the head. The triangular part of the upper jaw formed by the 

 intermaxillaries is rather longer than broad. The diameter of the 

 eye is a little less than the width of the interorbital space, and con- 

 tained once and two thirds in the length of the postorbital portion of 

 the head. Vertex and interorbital space flat. The base of the 

 ventral fin is midway between the root of the caudal and the gill- 

 opening. Dorsal and anal fins scaleless, nearly equally long ; the 

 dorsal commences a little in advance of the anal. Caudal fin forked, 

 the lower lobe being the longer ; its central rays longer than the eye. 

 Sides with a well-defined silvery stripe. 



One specimen, 6 inches long (no. 264), from the Godeffroy Mu- 

 seum. From Rarotonga, Cook's Islands. 



Hemirhamphus gamberur (Riipp.). 



Having received specimens of this species through the kindness 

 of the Marquis J. Doria, I am enabled to point out the characters 

 by which it is distinguished from H. dussurnieri. 



D. 14. A. 14. L. lat. 50. 



Body subtetrahedral. The length of the entire head is twice that 

 of the lower jaw, and one third of the total (without caudal). The 

 triangular part of the upper jaw, formed by the intermaxillaries, is 

 broader than long. The diameter of the eye equals the width of the 

 interorbital space, and is two thirds of the length of the postorbital 

 part of the head. The root of the ventral fin is somewhat nearer to 

 the head than to the base of the caudal. Dorsal and anal fins scaly, 

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

 the central rays about as long as the eye. Sides with a well-defined 

 silvery band. 



Red Sea. 



Engraulis bcelama (Forsk.). 



B. 11-12. D. 15. A. 29-32. L. lat. 36-42. 



The height of the body is one fourth or two ninths of the total 

 length (without caudal), the length of the head one fourth or rather 

 more than one fourth. The depth of the head is three fifths of its 

 length. The diameter of the eye is a little more than the length of 

 the snout, and two ninths of that of the head. Snout obtusely co- 

 nical, much projecting beyond the lower jaw. Minute teeth in both 

 jaws. The maxillary becomes gradually broader, and is obliquely 



Proc. Zool. Soc— 1871, No. XLIII. 



