CYMBULIAD^. 27 



2. EURIBIA. 



Animal globular ; wings 2, horizontal, opposite on each side of the 

 mouth, and with a small intermediate lobe. — Shell cartilaginous, 

 membranaceous, thin, transparent, regular, shaped like a hood ; 

 mouth round, spread out. 



Euribia (hemispherica), Rang, Ann. Sci. Nat. 1827, xii. 328 ; Man. 



Moll. 117; Desk. Ency. Meth. iii. 121; Oken, Isis, 1829,319; 



Guerin, Iconog. Moll. 12. 

 Eurybia (hemispherica), Menke, Syn. ed. 2, 9, 1830 (not Hubner, 



1806, nor Illiger, nor Boisduval, nor Eschscholtz, 1829). 



D'Orbigny observes he has never found the genera Psyche and 

 Euribia of Rang ; and he further remarks, " De petit godets abso- 

 lument semblables a la coquille des VEuribie, et transparens comme 

 le sont les coquilles des Pteropodes, nous parurent etre, pendant 

 quelque temps la Coquille de ce dernier genre, mais nous avons 

 reconnu depuis que ce n'etait que la partie cephalique d'un Crus- 

 tace, qui se detache avec beaucoup de facilite." Voy. Amer. 

 Merid. Moll. 75. 



1. Euribia hemispheeica. 



Animal white, rather transparent ; fins oval, narrow at the base ; 

 mouth black ; viscera brown. Shell very thin, flexible, spherical, 

 yellow ; mouth horizontal, very large. 



Euribia hemispherica. Rang, Ann. Sci. Nat. xii. (1827), 329, t. 45, 

 B, f. 9, 1011 ; Guerin, Icon. Moll. 12. 



Hab. Atlantic Ocean. 



2. Euribia Gaudichaudi. 



Euribia de Gaudichaud, Eydoux 8r Souleyet^ Voy. Bonite Moll. i. 

 14, f. 1, 6, not described. 



Hab. 



3. PSYCHE. 



Body free, membranaceous, without any distinct head ; tentacles 

 none ; wings 2, lateral, elongate, without any intermediate lobe. 

 — Shell none (or very thin, membranaceous ?) 



Psyche, Rang, Ann. Sci. Nat. 1825, v. 284; Man. Moll. 117 (not 

 Linn. 1735) ; Isis, 1827, 749 ; Cuvier, R. A. ed. 2 ; Guerin, Icon. 

 Moll. 11 : Gray, Syn. B. M. 1842 ; Proc. Zool. Soc. 1848. 



d2 



