184 



the intermaxillaries mesially and by the maxillaries 

 laterally ; maxillaries composed of three, sometimes 

 movable, pieces. Opercular apparatus complete. 

 Adipose fin none. Dorsal not elongate ; anal some- 

 times very long. Stomach with a blind sac ; pyloric 

 appendages numerous. Gill apparatus much 

 developed, the gill-openings being generally very 

 wide. Pseudobranchise large, except in Megalops. 

 Air-bladder more or less simple. 



" Inhabitants of all seas, many species entering 

 fresh waters." 



CHATOESSUS. 



Formed by Valenciennes, on a small group of fishes, generally 

 from the fresh waters of America and India, and often re- 

 markable by the lowest ray of their dorsal being prolongated 

 in a long filament. 



CHATOESSUS EEEBI. 



Chatoessus Erebi, Gunther, Cat. British Musuem, vol. vii., 



page 207. 



Coma?, Richard., Erebus and Terror, p. 61, pi. 38. 



Clupea Thrissa (Koine) Bussel, Fishes, Corom. ii., p. 76, 



pi. 196. 



Richardson had considered this fish as belonging to the Kome 

 of Russell, but Dr. Grunther has found it was distinct. 



It is of a light silvery grey on the upper parts, with the edge 

 of the scales rather obscure ; this is caused by the presence of 

 numerous and very small black points ; the lower parts are very 

 brilliant, silvery, and iri dated ; the top of the head is purple ; the 

 dorsal of a fine grey, the others blueish ; ventrals white ; the 

 caudal bordered with an obscure tinge ; the sides of the head 

 are rather yellow, as are also the eyes. 



Very scarce in the Melbourne Market, and being very much 



