anal fin: and other characters, which have been noticed in the precedmg synopsis. 

 To this should the name Labrax be restricted. 



by finer and more numerous teeth on the inferior bonier of the preoperculum, and the 

 presence of only two anal spines. The distinctive characters of this species, however, 

 require to be confirmed. 



The third species is the Labrax Unratus of Cuvier, the common Hock-fish or Striped 

 Bass of the United States. This has been taken as the type of a new genus, for which 

 MitchiU's name Roccus is preserved. The characters are given below. To this genus 

 should be also referred the Labrax muWUnrutus described by Cuvier and Valenciennes 

 in the third volume of their "Histoire Naturelle des Poissons". 



The fourth species, Labrax Waigknsix, has been identified by Bleeker with the 

 Psammopcrca datniohUs of Richardson; if this is correct (ami, notwithstanding the dis- 

 crepancies between the descriptions of the "Histoire Naturelle" and Richardson, such 

 appears to be the case), it belongs to a very distinct genus from the Labrax lupus. The 

 teeth of tlie jaws, vomer, andpnlatinesare describe. 1 by Richardson as crowded, rounded, 

 and granular, while by Cuvier the teeth on both jaws, the chevron of the vomer, and 

 the palatines are said to be villiform ("dents en velours"): it is also stated by I 'uvier 

 that there is a small oval disk at the base of the tongue ; by Richardson, the tongue is 

 said to be smooth. In the latter statement, however, he disagrees not « mly with Cuvier 



the base of the tongue, "lingua basi thurnia denticulorum scabra." Both authors agree 

 as to the presence of a single spine to the operculum (although ..no of the generic- 

 characters assigned to Labrax by Cuvier was th e presence of two spines on that bone), 



* Pinnas habet tot quot Cestra-ua et Mugil: squamas serratas: os magnum plurimis tenuissimisque dentibas 

 multiplici online munitum. Voracissimus. 



t Natnurknndig Tydscbrit't i oL ii, p. 479. 



