356 Mr. Jerrreys on the Testaceous Pneunomobranchous 
the shell is clothed with an earthy covering like that of the 
Bulimus obscurus. This seems a provisional defence to the 
animal until the teeth of the aperture are completely formed, 
when it divests itself of its coat by rubbing the shell against 
extraneous substances; and it is one of the many and va- 
rious contrivances of nature which we cannot sufficiently 
admire. | 
This is not the Grain d'avoine of Geoffroy, to which as 
well as the Pupa avena of' Draparnaud, Férussac has re- 
ferred it. The Helix ventricosa of Müller is without doubt 
this species in its young state. 
2. RINGENS. 
Animal 
Testa ventricosa, nitida, glabra, fulva. Anfractus 5, suturà 
lineari. Apertura elongato-lunata, plicis 5, inzequali- 
bus, nempé 3 columellaribus et 2 labralibus instructa : 
peristomio fulvo, subincrassato. Umbilicus foramine 
cylindrico. 
Long. 0.115.— Diam. 0.065. 
Vertigo anglica. Fér. Tab. des Moll. p. 64. 
From the Beauties of Scarborough by Mr. J. S. 
Miller. EOM 
- 
3. eer x 
Animal nigro-griseum, politum. Tentacula superiora ar- 
cuata. 
. Testa cylindracea, glabra, nitida, fulvescenti-cornea. An- 
| fractus 5—7. Apertura elongato-lunata, plicá unicá 
Ee . columellari et alid interdüm tenuiori in ipso columella 
. labio instructa: peristomio subincrassato. es 
— foramine cylindrico. | 
Ecne. 
