VERTIGO. 
169 
Mr. Jeffreys, in his Supplement, observes, The 
Al(Ba revoluta of his Synopsis is an old bleached spe- 
cimen, with the aperture placed more extrinsically 
than usual.” {Linn. Trans, xvi. 515.) 
75. 2. Vertigo muscorum. Cylindrical Whorl 
Shell. — Shell attenuated, pellucid, pale brown, 
acutely obliquely striated ; whorls five, convex ; 
mouth ovate, slightly margined externally, 
toothless ; umbilicus narrow, (t. 12. f. 140.) 
Pupa obtusa. Flem. Brit. Anim. 269. (not Drap.') — Alsea 
cylindrica. Jeffrey s.^ Linn. Trans, xvi. 359. 515. — Vertigo 
cylindrica. Ferussac, Tab. Moll. 64. ; Alder, Mag. Zool. 
and Bot.ii. 112. ; Gray, Man. 200. t. 12. f. 140. — Pupa 
muscorum, var. a. Drap. Tahl. Moll. 56. 1801, Hist. Moll. 
59. t. 3. f. 36, 37. — Pupa minutissima. Hartmann, Neue 
Alpina, 220. t. 2. f. 5. 1821 ; Pfeiffer, iii. 38. t. 7. f. 12, 13. ; 
Bossm. Icon. i. t. 2. f. 38. 84.; Forbes and Hanley, B. M. iv. 
104. t. 130. f. 2. — - Pupa minuta. Studer, Cat. 89. 1820. — 
Vertigo muscorum. Mich. Comp, 70. ; Moq. Tand. Moll. 
Franc, ii. 399. t. 28. f. 20. 24. — Pupa (Sphyradium) mus- 
corum. Charpent. i. 15. — Vertigo pupula. Held. Isis, 1837, 
303. — Alsea minutissima. Beck, Ind. 85. ■ — Eruca mus- 
corum. Swain. Malac. 334. — Vertigo minutissima. Graells, 
Cat. 7. — Stomodonta muscorum. Mermett, Moll. Pyr. 55. 
Inhab. under stones on downs. {Hemerg^ 1813.) 
Animal blackish red, shining ; lateral lobes large, 
rounded. 
Dr. Fleming, who first described this shell, con- 
founded it Avith Pupa obtusa of Drap., but he ob- 
served that it is not a line in length, while Drapar- 
naud’s shell is about half an inch ; this has only 
five whorls, and his has eight. It was sent to Dr. 
Fleming by Mr. Chambers, surgeon, Kirkaldy, who 
found it in the parish of Balmenna, Fifeshire. 
