ADAMS: VITRINA HIBERNICA AND V. PELLUCIDA. 233 



Now, on examination of the Linnean Transactions referred to, we 

 find under the name V. draparnaldi not only a very accurate descrip- 

 tion of the sliell of V. hibernica, but also of the animal with the 

 specific characteristic clearly set forth. It will be convenient to give 

 the extract almost in full. 



" VITRINA. 



1. MuLLERi [=pellucida Miill.]. 



Animal albo-cinereum. Sustentaciiluin perangustum crassum. 

 Pallii processus, alb us. 



Testa orbiculata, utrinque convexa, hyalina, politissima, subvire- 

 scenti-alba. 



Anfradiis 3. Aperiiira subrotundo-lunata. 

 Long, o'i25. Diam. o"i75. 



.... The shell differs from the following in the spire being 

 more central and produced, and in the form of the aperture, which 

 is slightly angular near the insertion of the columellar border. 

 The size of the animal is also not so disproportionately large. 



2. Draparnaldi. 



Animal griseum, testum valde superans. Sustentaculum permag- 

 num. 



Testa depressior, spira parum exserta lateral!, perlucida, sub- 

 viridis. Anfractiis 3. Apeitura ampla, elliptico-lunata. 

 Long. o'i35. Diam. o"25. 

 Vitriiia pellucida Drap., Hist, des Moll., p. 119, /. 8,/ 38 [fig. 38 

 is V. diaphana\ 



Plentifully towards the end of autumn at the roots of the Rosa 

 spinosissima on the Swansea burrows." 



3. Depressa. 



Testa depressa, lentissime et irregulariter rugosa, albida. An- 

 fractus 2, vix 3. Apeitura lunata. 



Long. 0*065. Diam. c'i45. 



As yet I have found only two dead specimens from Britonsferry 

 Wood near Swansea. In its general contour it more nearly re- 

 sembles the true Helices than any of the preceding ones. . . ." 

 This description being so different from the preceding, it is diffi- 

 cult to see how Jeffreys managed to class both draparnaldi and 

 depressa together as he did subsequently in his " British Concho- 

 logy " under the name depressiuscula. 

 " 4. — Elongata. 



Animal elongatum, peramplum. Tentacula brevia, fere conica. 



Testa globosa, spira prominuta, alba. Anfractus vix 2. Aper- 

 tura ovato-lunata. 



Long. 0-085. Diam. 0-15. 



