258 GERRID.F. 



total length ; the diameter of the eye is one-third of the length of the 

 head. Praeorbital and praeoperculum entire. The second spine of the 

 dorsal fin more than one-half of the height of the body, and nearly 

 equal to the length of the head. The second and third anal spines 

 strong, and rather longer than the rays, one-third of the height of the 

 body. Coloration uniform ; dorsal black-edged. 

 East Indian Archipelago. 



a. Adult. Amboyna. Purchased of Mr. Frank. 



15. Gerres aitispinis. 



D. K A. -1. L. lat. .3S. L. transv. 5/10. 

 10 7 ' 



The height of the body is contained twice and a fifth in the total 

 length (without caudal), the length of the head thrice and a third. 

 The diameter of the eye is one-third of the length of the head, equal to 

 the width of the interorbital space, and more than the extent of the 

 snout. The groove for the processes of the intermaxillaries is rounded 

 behind, naked, and extends beyond the vertical from the anterior 

 margin of the eye. The free portion of the tail is higher than long. 

 There are three and a half longitudinal series of scales between the 

 highest point of the lateral line and the scaly sheath of the dorsal 

 fin, which is composed of broad scales. Dorsal spines of moderate 

 strength : the third is rather higher than the second, its length being 

 contained twice and a fourth in the height of the body and once and 

 three-fifths in the length of the head. The posterior dorsal spines 

 are rather high, although shorter than the first rays ; the last spine 

 is a little longer than the eighth, and three-quarters as long as the 

 third. The scaly sheath of the anal rather low ; the second anal 

 spine is stronger but shorter than the third, which is half as long 

 as the head. Caudal forked, its length beiing one-fourth of the total, 

 and equal to that of the pectoral, which does not extend to the anal 

 fin. Silvery. 



Ganges. 



a. Forty lines long. Presented by G. R. Waterhouse, Esq. 



16. Gerres philippinus. 



J) K A.-. L. lat. 48. L. transv. 6/12. 



10 7 



The height of the body is contained twice and two-fifths in the 

 total length (without caudal), the length of the head twice and a 

 fourth ; the length of the caudal is two-ninths of the total. The 

 diameter of the eye is one- third of the length of the head, equal to the 

 width of the interorbital space, and more than the extent of the 

 snout. The groove for the processes of the intermaxillaries is rounded 

 behind, naked, and extends beyond the vertical from the anterior 

 margin of the eye. The free portion of the tail is longer than high. 

 The scaly sheath of the dorsal fin is veiy high. The second dorsal 

 spine elongate, its length being two-thirds of the height of the body. 



