Genns Otion. 211 



Species 2. O. BLAiNViLr.iANus. 



O. squamis inferis subrectis ; infra acuminatis ; postic4 lineari ; 



appendicibus auriformibus Tiolascente maculatis ; corpore 



violascente fasciato, fasciis e punctis effectis. 



tepas cornuta, Mont. Trans. Linn, Soc. XI. 179. t. XII. f. 1. 



[ Otion Blainvillii, Leach, Journ.dePhys. LXXXV. (1817.) Q7. 



Encycl Brit. Suppl. III. 170. t. LVI. 



f. d extra. 

 Mus. Mont, in Mus. Brit. 

 Description. — Lower vakes nearly straight, acuminated below;, 

 posterior valve linear ; auriform appendages spotted with 

 violet ; body with violet bands composed of dots. Montagu 

 found this species on the planks of a Transport, wrecked 

 on the coast of Devonshire. 



Species 3. Cuvieuianus. 

 O. squamis inferis subarcuatis, infra acuminatis, postica puncti- 

 forme, appendicibus auriformibus mediocribus; colore tes- 

 taceo, , 



Otion Cuvieri, Leach, Journ. de Phys. Ixxxv. (1817), 67. 



— EncycL Brit, Suppl, iii. 171. t. Ivii. 



f. centralis. 

 Lepas aurita. Wood Gen. Conch, i. 70. pi. 4. (pessima). 



Habitat ? 



Mus. D. Cuvier. 

 Description. — Lower valves rather arched, acuminated below ; 

 posterior valve dot-shaped : auriform appendages of moderate 

 size ; colour testaceous. 



Species 4. O. Dumeuillianus. 

 O. squamis inferis angulatis, infra acuminatis ; postic^ obsolete, ; 

 appendicibus auriformibus violascente maculatis; corpore 

 supra pedunculum violascente vittato. 

 Mus. nost. in Mus. Brit. 

 Description. — Lower valves angular, acuminated below ; posterior 

 valve obsolete; auriform appendages spotted with violet: 

 body above the peduncle with violet stripes. I received thii 

 o 2 



