BY W. MACLEAY, F.L.S. 519 



rather small ; pyloric appendages sometimes in immense number. 

 Air-bladder of variable size and structure if present. 

 In most tropical seas. Entering rivers. 



326. PoLYNEMTJS INDICX7S, Sbaw. 



Gunth. Cat. Fishes II., p. 326. 



D. 8. 1/13-14. A. 2/L1-12. L. lat. 65. L. transv. 7/13. 



Five pectoral appendages, some reaching beyond the tip of the 

 ventral fin ; caudal lobes sometimes produced into filaments, the 

 third dorsal spine filamentous. The distance beteen the root of 

 the ventrals and the anal, longer than the head ; a small prominent 

 spine above the angle of the preeoperculum. 



Port Jackson (Gunther and Castelnau). 



327. POLYNEMUS MACROCHIR, Guuth. 



Ann. and Mag. Nat. Hist., 3rd series. Vol. XX., p. 60. 



D. 8. 1/12. A. 2/12. L. lat. 70. 



Five pectoral appendages, three of which extend to the anal 

 fin ; pectoral fin nearly as long as the head, the length of which 

 is contained thrice and two-thirds in the length of the bod}^, 

 without the caudal fin, and is equal to the distance between the 

 root of the ventral and the anal. A distinct spine above the 

 angle of the prseoperculum. Coloration uniform. 



Port Jackson. 



328. PoLYNEMUS c^cus, Macl. 

 Proc. Linn. Soc. N. S. Wales, Vol. II., p. 354, pi. 9, fig. 1. 

 Port Darwin. Length 18 inches. 



Division V. ACANTH. SCI^^NIFOEMES. 



The soft dorsal fin is more, generally much more, developed 

 than the spinous, or than the anal fin. No pectoral filaments ; 

 head with the muciferous system well developed. 



