BULIMUS. 93 



cletrita * of British writers, a shell inti'oduced hy Pxdteney on the 

 authority of Mr. Bryer,as from a pond in Dorsetshire, ivas derived 

 from the common West Indian Bulimus, figured hy Chemnitz 

 (Conch. Gab. vol. i^.f.l224:J ; yet the statement that British speci- 

 mens are not banded, but of a someivhat transparent light horn 

 colour, renders it not improbable that the original specimens, although 

 at the time considered identical ivith the banded shell, were specifi- 

 cally distinct. Of their spuriousness, hoivever, there can be no 

 doubt. 



The figure in the Dorset Catalogue (j)l.\S)) is too tude for 

 recognition, and thai of Montagu (pi. 11, /. \) is by no means 

 satisfactory ; both, however, might pass for B. Guadaloupensis. 

 Probably Turtons drawing of his Limneus detritus was coined 

 from Montagits ; assuredly it bears not the least resemblance to the 

 shell described by him (not declared to be indigenous, but only pur- 

 chased for such), ivhich he states to have three brown bands on the 

 first whorl, to have rather tumid volutions, and " in size and 

 figure" to "answer exactly to the H. Boiitia of Chemnitz" (vol. ix. 

 f. 1216, 1217. 



B. GooDALLi, Miller. 



Helix GoodaUi, Miller, Ann. of Philos. new ser. vol. iii. (1822) p. 381. 

 Bulimus „ Gray, Ann. Philos. new ser. vol. ix. p. 414; edit. Turt. Man. 

 p. 6, f. 61, as spurious. — Fleming, Brit. Animals, p. 266. — 

 L. Pfeif. Monog. Helic. vol. ii. p. 159 (with synonyms), 

 „ clavulus, Turt. Manual L. and F. W. Shells, p. 79, f. 61. — Alder, 

 Mag. Zool. and Bot. vol. ii. p. 110. 



From Guadaloupe, d'c. ; introduced by Miller, who had found it 

 in some 2^i^i^-beds at Bristol. It is one of the most widely-dis- 

 tributed of land shells. 



B. DEcoLLATUs, Liniiseus. 



Helix decotlata, Linn. Syst. Nat. ed. 2, p. 1247. 



Bulvnus decullaius,BRVG. Encycl. Meth. Vers, vol. i. p. 326. — Turt. Manual 



L. and F. W. Shells, p. 77, f. 60.— Fleming, Brit. Anim. 



p. 266. — L. Pfeif. Monog. Helic. vol. ii. p. 152 (with 



synonyms). 



* The fJ. detritus of Pfeifter's monograph is figured in Kenyon's paper on British 

 Shells, but only as illustrative, not as indigenous. The species was erroneously 

 imagined by F6russac to be the Hciiu detrita of British writers (Gray). 



