121 



only resemblance is to a product of art — to the roof of a Chinese 

 pagoda, and for this similarity's sake I have named ii Pyrula idoleum. 

 Starting from the supposition that in former times men took the 

 productions of nature which surrounded them as models for their 

 works of art, the peculiar form of this shell has suggested to me the 

 conjecture that it originates from China ; in all probability -we shall 

 yet obtain from this country many strange forms, as for example the 

 Pyrula Maioees, ■vvhich is brought from the Chinese Sea. 



Anomia naviformis, Jonas. An. testd iransversim elongatd, an- 

 gustd, tenui,pellucidd, marginibus dorsali et ventrali parallelis, rec- 

 tis, lateralibus brevibus, rotundatis ; valvd majore cened, valde con- 

 cavd, minore albd, fragilissimd, concaviusculd ; foramine ovato, 

 integro. 

 Long. 16, lat. 4 lin. 

 Patriam ignoro. 



ITiis Anomia may perhaps be an aberrant form of the A. (Btiigma- 

 tica, Tvith which it has great resemblance in the texture of the shell, 

 position of the umbones and form of the foramen ; but I do not darė 

 to assert this, and therefore I describe it as a peculiar species till 

 intermediate species are found, forming the links of a chain, of which 

 the above two are the terminating ones. 



Mr. Tomės exhibited to the Meeting a specimen of the Bimacu- 

 lated Duck, Anas glocitans, which he had obtained in Leadenhall- 

 market ; the specimen is a female, and agrees in size and plumage 

 •with that in the Society's coUection. 



