12. UEREES. 343 



4. Gerres zebra. 

 Mull. ^ Trosch. in Scho?nbur(/k's Barbae!, p. 608. 

 D. ^. A.^. 



10 7 



Silvery : steel-blue above ; five or seven vertical bands. The 

 height of the body is a third of its length, and contains two and a 

 half times the length of the second and third spine in the dorsal fin, 

 and three times of the sficond spine in the anal fin. {M. ^ T.) 



Coast and freshwater ponds of Barbadoes. 



5. Gerres subfasciatus. 

 Cuv. 8f Val. vi. p. 477. 



U. -. A. y. 



The height of the body is one-third of the total length ; the snout 

 is rather shorter than the diameter of the eye. Spines of the fins 

 slender ; the third of the dorsal fin is one -half of the height of the 

 body, its width being less than one-twelfth of its own length. The 

 second anal spine stronger, but rather shorter than the third, and 

 about one-fifth of the height of the body. Silvery, with six or seven 

 indistinct vertical bands. 



Port .Tackson. 



a, h. Adult : bad state. From the Haslar Collection. 

 c-e. Half-grown : bad state. From the Haslar Collection. 



6. Gerres ovatus. (Plate XX. fig. A.) 

 D. f^. A. y. L. lat. 36. L. transv. 5/10. 



The height of the body is 2i in the total length (without caudal 

 fin) ; the diameter of the eye is one-third of the length of the head, 

 longer than the snout, and equal to the distance between the eyes. 

 The groove for the processes of i;he intermaxillary bones is short, 

 and does not extend beyond the vertical from the anterior margin of 

 the eye ; there are no scales between that groove and the orbit. The 

 spines of the dorsal slender and flexible ; the second and third longest, 

 and 2 1 in the height of the body ; the third of the anal fin longest, 

 shorter than the first ray, and nearly one-fourth of the height of the 

 body. Coloration uniform ; dorsaUs black-edged. 



Coast of Australia. 



a. Adult. Australia. Presented by the Earl of Derby. 

 6. Adult. Australia. From Mr. MacgiUivray's Collection. 



Description. — The body is elevated, ovate, its greatest depth being 

 above the ventral fin, where it is contained 2i in the total length 

 (without caudal fin), or three times when this fin is included. The 

 upper profile anteriorly descends abruptly from the origin of the dorsal, 

 the lower ascends from the base of the mandibula ; both nieet at a 

 not very acute angle. Posteriorly, along the base of the anal, the 



