^'-''* . PISCES. 



Premnas^ Cuv. 



One or two stout spines on the infra-orbital, and the preoperculum 

 aentated.(l) *^ 



PoMACENTRus, Lacep.(2) 



Preoperculum dentated, operculum unarmed? a single ran^e of 

 trenchant teeth. (3) ^ 



Dascyllus, Cuv. 



The fishes of this genus only differ from those of the preceding one 

 m their teeth, which are very short and crowded {en velours ras\(4.) 

 1 hey all inhabit the Indian ocean. 



Glyphisodon, Lacep. 



Operculum and preoperculum entire,- a single range of trenchant and 

 generally emarginated teeth. 



They are found in the Atlantic,(5) but the Indian ocean pro- 

 duces many more.(6) 



Some of them are distinguished from the others by numerous 

 spines in the anal.(7) 



Heliasus. 



The opercular pieces of the Glyphisodon and teeth similar to those 



(1) CMm Uamkatus, Bl., 219. 2, which Is also the Holocentre Sonnerat, 

 Lacep., IV, 391; and the Zu/y. trifasciatus,lM., Schn., 567; and K^hlreuter Nov 

 Com Petrop., X viii, 6; Seb.. III. xxvi, 29. is a variety of it;-P.. mco/or,'cav.', 

 beb. Ill, xxvi, 19, which IS also the Scorpene aiguillonnee, Lacep III 268 



(2) We define them differently from Lac^p^de, and greatly diminish their nam- 

 ber by divisions. 



(3) Cha^todonpavo, Bl., 198, 1, which is the Pomacentre paon, Lacep., and his 

 Holuc. diacanthe, IV, 3:iQ-,-Pomacentrus, Quoy et Gaym., Voy. Freycin ' p] 64 

 f. 2;-P. pundatus, lb., 1;_P. emarginatus, Seb. Ill, xxvi, 26, 27, 28;-the 'ho! 

 negnlhn, Lacep. IV, 2,67. " ^ . i"e noi. 



(4) Chsetodonaruanus, L., Mus. Ad. Fred. XXXII, Bl.. ph 198, f. 2 



(5) The Jacaraqua, Marcgr.. or Chsetod. saxatiUs, L., Mus'. Ad' Fred XXVII 

 3, which IS also the Chwt. marginatus, Bl., 207; and his Ch. mauntn,213, 1; and 



Bl! 2,Z ' ''''" ^"* '' '" "' '''' ^^' "'^"''^"' '*'' '"'' 2'-^'^'- '^-'^^^^ 



(6) Ch!etod. bengalensis, Bl. 213, 2, or Lahre macrogasUre, Lacep., Ill xix 3 

 Gl mdanurus, Cuv., or Lahre G-bandes, Lacep., Ill, xix, 2;-C/J. sor'didus, 

 lorsk., or Calamoiapota, Russel., 85;-Gl. sparoides, Cuv., Lacep., IV, ii 1Gl 

 lachrymatus, Cuv., Quoy et Gaym., Freycin., pi. 62, f. 7,-Gl. azureus, lb., ^1. 64* 

 f. 3; Gl. uniocellatus, lb., f. 4. 



(7) ChsEtod. suratensis, Bl 2l7;Chsetod. 7naculatus,m.,427. 



