30 



CINERAS. 



CINERAS VITTATA. 



■Leach. 



A shell consisting of five narrow valves so widely pla- 

 ced that they do not cover the whole of the animal, to 

 compensate for which, they are inclosed in a membra- 

 nous bag, a continuation of which forms the peduncle; 

 this is of a greenish colour with six longitudinal black 

 stripes, three on each side; it has an anterior opening 

 for the passage of the animal's arms. 

 Cineras vittata. 



Y OTION. 



\ lepas aurita. — Linn. 



""* Wood's Conchology, / 4, pi 12. 

 Shell with only two testaceous valves, small, semilu- 

 nar and separated, inclosed in a membranous bag, as 

 in the preceding genus, but terminated in two tubes 

 or ears at the back part, and the centre aperture ad- 

 mitting the passage of the animal's tentaculae, the 

 singular form of which prevents its being blended 



