riftimu f JMHm mud MargimeBm. 



. i. ::,. Pig. 155, referred to und 

 I inuih from the typical form. 

 distinct spi ci< b, and have little 

 •]. .1/. H ol ( iouthouy, figured and do- 



Vq\. 1. Ii i> the same shell which 

 is denominated .V. unicolor, Lister. — 

 n by Kiener as a synonytne <>f M.mrta. 

 . but '.ihc i.. Lister'* work i; will be found that he 



i io named ai ies of MargineMa. 



■ tabliahed rules of nomenclature require Gnaelin's namo 

 :.. he | .1 to Lamark's ccendescens. Mr. Sowerby 



i mer as a sj oonyme. 

 \.. ; \l elegant, GrmeL [cannot agree with Mr. Sowerbj 

 ;n tin propriety of uniting If. elegant, final., and M. undulatm, 

 ion, The differences in .-;/>• ami marking, conjoined with the 

 • on< Ii is -i\ and tin- other but live plaits, seem to justify 

 thora in separating them. 

 No. 51. W tsanoidalu, Kiener. [f this he really identical with 

 ftl. , Menko — as 1 have supposed, and as Mr. Sowerbj 



mei • liould take precedence, having hen an 



3 , '. ,s . and l nil mtiii i.. i epre 

 which is certainly closely allied to M. 

 prove identical, though I am still of opinion thai 



M.f/i i'i,i. Lam. Sowerby's shell cannot he the .1/ 



ei if the figures of both authors are faithful. 

 >,' Hutu, S wainson. The name guttata had been ap 

 ■ Dillwyn in 1811 i<> tin- shell afterwards known as M' 

 I. ■ name will not therefore stand, and 



ill back "'I Kiener'i title M. tnaeulota, 

 ■ ' »w. This is identical with 2bf. obet* nobis, 



d and liirurcd in this Journal in March, L846, while Mr. 



i ription wai not publi bed until the close of the 



'/ W. This name being ('I e oi envied as ahi'Vc 



snolhci name. 1 would propose M. />i/ru- 



