158 Australian Fish of the Genus Arripis. 



Tomes and De Morgan's previous researches. Whatever 

 doubt existed is now removed by the careful application of 

 magenta. 



MULTIPLICATION OF THE CELLS. 



This I believe is accompanied by division of the capsule, the 

 septa when fully formed being continuous with the sur- 

 rounding matrix. 



Microscopic preparations and diagrams showing all that 

 has been now advanced, are around you for inspection. 



Art. XXXVII. — Remarks on the Australian Fish of the 

 Genus Arripis. By Professor M'Coy, F.G.S., &c. &c. 



Read 19th September, 1864. 



Professor M'Coy described the generic characters of the 

 genus Arripis so named, by Jenyns, from the supposed 

 absence of the fan-like structure at the base of the scales 

 which Professor M'Coy, however, showed to be generally 

 present. Branchiostigals seven ; all the teeth villi form ; 

 teeth on the palatine bones and vomer ; tongue smooth ; 

 one dorsal with nine spines ; anal with three ; preoperculum 

 denticulated. Pyloric appendages said, by the most recent 

 writers, to be from seventeen to fifty, Professor M'Coy found 

 to be one hundred and sixty. 



The species were described as Gentropristes by Cuvier, 

 Richardson, &c, under the following names — 



Gentropristes Georgianus. (Cuv.) 

 „ Salar. (Richardson.) 



„ Tasmanicus. (Homb.) 



„ Truttaceus. (Cuv.) 



Perca Trutta. (Cuv.) 



and probably Perca marginata. (Cuv.) 



Of these, the G. Georgianus, Professor M'Coy found to be 

 the adult form. It is the fish improperly called " salmon " 

 by the colonists, the eating of which is supposed to be, at 

 certain times and to certain people, more or less poisonous, 

 although certainly good for food under other circumstances 

 not yet understood. It has a nearly uniform pale olive 

 colour. 



