302 Anali/ses of Books, [Novi 



62. stagnalis 



63. palustris 



64. fossaria 



Limn E us, Drop, 



. ^ — . „^ . 



65. limosa ( Lymnjea, Lamarck. 



66. auricularia 



67. lutea 



###### 



68. pellucida Vitrina, Drap, and Lam. 



Nerita. 69. fluviatilis /^k^ita, Drap. 



X^ERiTia A, Lamarck. 



Patella. 70. oblonga Ancylus, Drap. and Lam. 



Tellina stagnicola. — T. testa rhombea glabra, umbone exserto. 

 Cyclas calyculata, var. 2. Lamarck^ Anim, sans vert. v. 559. 

 liabitat in stagnis. Testa 4-i- lin. longa, b\ lin. lata, glabra, 

 tenuis, pellucida, cornei colons, epidermide nulla. Valvulse 

 versus marginem complanatae. 



Tellina Henslowana. — T. testa oblique subovata trans versim 

 vix sulcata, projectura a basi umbonis adornata. Habitat in 

 rivis. Testa 2 lin. longa, 2-i- lin. lata, cornei coloris, glabra, 

 striata, vix sulcata, anterius planiuscula. 



Turbo Leachii, — T. testa imperforata subovata, anfractibus 

 6 rotundatis oblique decurrentibus, sutura conspicua, apertura 

 suborbiculari, operculo membranaceo. Habitat in rivis. 



Testa 3 lin. longa, 1-| lin. lata, .cornea, diaphana, glabra. An- 

 fractus 5, teretes. Spira elongata. Apex acutus. 



Turbo Offtonensis, — T. testa fusca striata subpellucida, anfrac- 

 tibus septem secundis sensim rainoribus, apertura rotundata 

 edentula nee marginat^. Habitat super gramina et arbusta 

 in sylvis, super truncos arborum, atque inter folia putrescentia. 

 Testa plusquam 1^^ lin. Angustior quam T. mnscorum et T. mar- 

 ginatus, et spiris sensim minoribus, Apertura edentula, margine 

 nee reflexo, nee diverso colore. 



Helix Draparnaudi. — H. testa supra subconcava subtus con- 

 cavasubcarin-dta, anfractibus quatuor transversim striatis : ultimo, 

 majore. Habitat in aquis dulcibus. Testa diametro 3 lin. 

 supra grisea, subtus albida, nitescens, anfractibus quatuor, ultimo, 

 in medio juxta aperturam, subcarinato. Apertura dilatata. 



Helix Somershamiensis. — H. testa grisea umbilicata, anfracti- 

 bus 2 vix 3 reticulars. Habitat in sylvis, rarissima. Equal 

 in magnitude to a middle-sized H. alba, which it i^esembles in 

 shape ; is of a greyish colour, and curiously reticulated, particu- 

 larly above. 



Helix Kirbii. — H. testa nunc subconica nunc subdepressa 

 subpellucida striata, anfractibus quatuor, umbilico patulo. Habi- 

 tat sub saxis et lignis. Testa diametro -i lin. rufo-cornea; 

 anfractibus subtiliter striatus. Apertura subrotundo-lunata, 

 Labivua tenue. Umbilicus profundus. 



