339 Mr. Jerrreys on the Testaceous Pneumonobranchous 
8. MonToNI. 
Animal pallidum. Tentacula nigra, respectu corpusculi 
longa. (Miill.) 
Testa suprà depressior, nitidissima, glabra; subtus planata, 
substriata ; lateribus utrinque acutis; pallidé fulva. 
Anfractus 5. Apertura compressa, subrhomboidea. 
Long. 0.085.— Diam. 0.11. 
Helix Trochulus. Müll. Verm. 2. p. 19? 
From the rejectamenta of the Avon river, near Bristol. 
I have scarcely any doubt of this species being the Trochus 
terresiris B. of Da Costa, which is stated by that author to 
have been found by Mr. Morton in the clefts of a sallow 
near a pond in Thorpe Mandeville, Northamptonshire, and 
which, as well as the Trochus terrestris of Pennant, has been 
referred by Montagu and succeeding authors to the Heliz ele- 
à gans, a species inhabiting the plains of the South of France. 
9. ACULEATA. 
Animal grisescens, testa erectà incedit.  Tentacula per- 
longa, cylindrica. 
Testa globosa, lamellis mucronatis transversis aspera, fusca. 
| As. A pentuna, sllipicerratnndate, 
Helix eaa Mill. Ver 2 p. 81 TETS 
spinulosa. Lightf. in Phil. Trans. v6. p. . 166. 
Mont. Test. Brit. p. 429. ¢ 11. f. 10. Maton & 
 Rackett in Linn. Trans. 8. p. 201. 
Not uncommon in a coppice at Newton near Swansea. 
mal feeds on the Hee platyphylla, 
F0 ran 
