FAMILY CYCLOSTOMACEA. 179 



1. Acme lineata. Lineated Acme. 



Shell ; minute, siibcylindrically elongated, obscurely compressly 

 umbilicated, transparent, horny, fuscous 

 amber, glossy, whorls six, rather flatly con- 

 vex, obtusely angled at the base, longitu- 

 dinally closely linearly striated, striae some- 

 times obsolete ; aperture small, pyriformly 

 rounded, more or less sinuated at the upper 

 part, columellar lip thinly reflected. 



Turbo, Walker and Boys (1784), Test. Minut. Bar. 

 p. 112. pi. ii. f. 42 (without specific name). 



Helix cochlea, Studer (1789), Faun. Helv. Coxe, Trav. in Switz. vol. iii. 

 p. 430 (without characters). 



Bulimus lineatus, Draparnaud (1801), Tail. Moll. p. 67. 



Turbo fuscus, Montagu (1803), Test. Brit. p. 330. 



Auricula lineata, Draparnaud (1805), Hist. Moll. p. 57. pi. hi. f. 20, 21. 



Auricella lineata, Jurine (1817), Helv. Alman. p. 34. 



Carychium cochlea, Studer (1820), Kurz. Verz. p. 89. 



Acicula lineata, Hartmann (1821), Neue Alp. vol. i. p. 21 5. 



Acme lineata, Hartmann (1821), Syst. Gast. p. 49. 



Carychium lineatum, Ferussac (1822), Tail. Syst. p. 104. 



Cyclostoma lineatum, Ferussac (1822), Diet. Hist. Nat. vol. ii. p. 90. 



Carychium fuscum, Fleming (1828), Brit. Anim. p. 270. 



Pwpula lineata, Charpentier (1837), Moll. Suiss. p. 22. 



Acmefusca, Gray (1840), Turt. Man. p. 223. pi. vi. f. 66. 



Truncatella lineata and polita, Hartmann (1840), Era", unci Suss. Gast. 

 p. 1. pi. i. and p. 5. pi. ii. 



Cyclostoma fuscum, Moquin-Tandon (1843), Moll. Tolouse, p. 14. 



Acme Moutonii, Dupuy (1849), Cat. JExtr. Test. no. 4. 



Acme (Auricella) lineata and Moutonii, Moquin-Tandon (1855), Hist. Moll. 

 vol. ii. p. 508, 509. pi. xxxviii. f. 3 to 7. 



Acme (Platyla) fiisca, Moquin-Tandon (1855), Hist. Moll. vol. ii. p. 509. 

 pi. xxxvhi. f. 8 to 16. 



Acicula fusca, Gray (1857), Turt. Man. p. 39. pi. vi. f. 66. 



Hab. Throughout Europe. Siberia. (In damp places, under stones, and 

 among moss.) 



When objects are minute, and have to be delineated on a magni- 

 fied scale, naturalists are apt to exaggerate characters, and give 

 substance to forms that are in great measure the result of fancy. 

 This is especially the case with minute shells. Acme lineata has a 

 cylindrically elongated shell of six flatly convex whorls, which, ac- 



n2 



