BULIMUS. 93 



detrita * of British writers, a shell introduced by Pidteney on the 

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

 from the common West Indian Bulimus, figured by Chemnitz 

 (Conch. Cab. vol. ix.f. 1224,) ; yet the statement that British speci- 

 mens are not banded, but of a somewhat 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, however, there can be no 

 doubt. 



The figure in the Dorset Catalogue (pi. 19 ) is too rude for 

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

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

 Probably Turtoiis draiving of his Limneus detritus was copied 

 from Montagu's ; assuredly it bears not the least resemblance to the 

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

 chased for such), which 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. Bontia of Chemnitz" (vol. ix. 

 f. 1216, 1217. 



B. Goodalli, Miller. 



Helix Goodalli, 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, <kc. ; introduced by Miller, ivho had found it 

 in some pine-beds at Bristol. It is one of the most widely-dis- 

 tributed of land shells. 



B. decollatus, Linnaeus. 



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



Bulimus decollatus, Brug. Encycl. Meth. Vers, vol. i. p. 326. — Turt. Manual 



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



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



synonyms). 



* The B. detritus of Pfeiffer'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 Helix, detrita of British writers (Gray). 



