432 cLiTPKn)^. 



cuhim narrov, taper I nr/ helilnd. G'dl-rahers fine and closely set, hcdf 

 as lonr/ as the eye. Eye as long as the snout, which is of moderate 

 extent, two-sevenths oi' the length of the head. Ventral fio. inserted 

 beJow the anterior half of the dorsal fin, the origin of which is 

 nearer to the end of the snout than to the root of the caudal fin. 

 There are fifteen abdominal scutes behind the base of the ventral 

 fin, their spines much projecting. Silvery, dorsal and caudal fins 

 brownish. 



Eastern Australia. 



a-d. Fine specimens. New South Wales, From Mr. Rayner's Col- 

 lection. 



e,f,g-h. Adult. Hawkcsbury River. From Mr. Xrefi't's Collection. 



i. Adult : skeleton. New South AVales. From Mr. Rayner's Col- 

 lection. 



III. No teeth, or on the tongue only. 

 1. YVic last dorsal ray prolonged into a filament (Opisthonema). 



30. Clupe'a thrissa. 



The Sprat, Broivn, Jamaica, p. 443. 



Cailleu-Tassart, Duhamcl, Pechcs, iii. pi. .31. fig. 3. 



Clupea trissa, Osbeck, Reise, p. 336 ; Brousson. Ichth. fasc. i. ; Bon- 



ruiterre, Emycl. Ichth. p. 186, pi. 76. tig. 315 ; Block, xii. p. 35, 



taf. 404 ; Bl. Schn. p. 424. 

 Megalops thrissoides, Agass. in Spix, Pise. Bras. p. 4'5, pi. 22. 



oglina, Lesucur, Journ. Ac. Nat. Sc. Philad, i. p. 3-59. 



notata, Lesueur, I. c.p. 361. 



Chatoessus signifer, Dekay, N. York Faun. Fish. p. 264, pi. 41. fig. 132. 

 Meletta thrissa, Cuv. S)- Val. xx. p. 380. 

 ? Chatoessus eumoi-phus, Gosse, Nat. Snj. Jam.-^. 290. 

 Opisthonema thrissa, Gill, Proc. Ac. Nat. Sc. Philad. 1861, p. 37. 



B. 6. D. 19. A. 23-24. Y. 8. L. lat. 50. L. transv. 16. 

 Vert. 48. 



The last dorsal ray produced into a long filament. The heigh.t of 

 the body is one-third of the total length (without caudal), the length 

 of the head rather less than one-fourth. Lower jaw but slightly 

 prominent ; the maxiUary extending somewhat beyond the vertical 

 from the front margin of the eye. No teeth on the palate ; tongue 

 generally with a very narrow strip of minute teeth. Operculum 

 entirely smooth. Gill-rakers veiy fine, nearly as long as the eye, 

 closely set. Ventral fin inserted below, or nearly below, the middle 

 of the base of the dorsal. Origin of- the dorsal fin considerably 

 nearer to the end of the snout than to the root of the caudal. There 

 are fourteen abdominal scutes behind the base of the ventral fins. 

 Length of the pectoral fin three-fifths of the distance of its root 

 from the ventral fin. Scales regularly arranged, nearly smooth, the 

 strioe being exceedingly fine. An indistinct bluish spot on the 

 shoulder. Each scale on the back with a dark spot, the spots form- 

 ing longitudinal series. 



Atlantic coasts of America. 



a. Adult. Barbadocs. Purchased of Mr. Cutter. 



