262 GERBID^. 



? Gerres equiila, Temin. ^-Schleg. Faun. Japon. Poiss. p. 76. pi. 40. fig. 1 

 (not good); Bleek. Verhand. Batav. Genootsch. xxvi. p. 92. 



D. A. A. y. L. lat. 35-38. Csec. pylor. 3. Vert. 10/14. 



The height of the body is contained twice and three-fourths in the 

 total length (without caudal fin). Prseorbital and prseoperculum 

 entire, the latter with the angle slightly rounded. The snout is 

 a little longer than the diameter of the eye, which is one-third of the 

 length of the head. The spines of the fins of moderate length and 

 strength ; the second of the dorsal is one-half of the height of the 

 body, and at least twice as long as the second anal spine. Uniform 

 silvery. 



Red Sea ; Indian Ocean and Archipelago. 



Four specimens — one from Amboyna. 



24. Gerres acinaces. 



Meeker, Nat. Tydschr. Nederl Ind. 1854, vi. p. 194. 



D. ^. A, ^. L. lat. 45. L. transv. 6/11. 



The height of the body is contained twice and three-fourths in the 

 total length (without caudal), the length of the head thrice and one- 

 fourth ; the diameter of the eye is one-fourth of the length of the 

 head, and less than the extent of the snout, which equals the width 

 of the interorbital space. The groove for the processes of the inter- 

 maxillary bones extends beyond the front margin of the eye, and is 

 entirely naked. The spines of the fins are rather slender : the second 

 dorsal spine is longer than the third, its length being more than one- 

 half of the height of the body, and two-thirds of the length of the 

 head ; the second of the anal fin is not so strong as the second of 

 the dorsal, scarcely longer than the third of the anal, two-sevenths 

 of the height of the body and two-fifths of the length of the head. 

 Caudal with scarcely any scales, very deeply forked, the .length of 

 its lobes being contained twice and two-thirds in the total. 



Seas of ava and Kokos. 

 a. Fine specimen, 8| inches long. From Dr. P. v. Bleeker's Col- 

 lection. 



25. Gerres gigas. 



D. -5-. A. -. L. lat. 46. L. transv. 6/11. ' 

 10 7 



The height of the body equals the length of the head and is two- 

 sevenths of the total (without caudal). The diameter of the eye is 

 two-sevenths of the length of the head, and less than the length of 

 the snout, which equals the width of the interorbital space. The 

 groove for the processes of the intermaxillaiy bones is pointed behind, 

 not scaly, and extends beyond the fi-ont margin of the eye. The free 

 portion of the tail is considerably longer than high. The second 

 dorsal spine is elongate, sabre-shaped, its length being contained 

 once and a fourth in that of the head. Anal spines slender : the 



