FAMILY CYCLOSTOMACEA- 



177 



1. Cyclostoma elegans. Elegant Cyclostoma. 



Shell ; ovately turbinated, solid, compressly narrowly umbilieated, 

 violet-tinged or yellowish drab, 

 sometimes articulated with some- 

 what square livid red-brown dots, 

 whorls five, corded throughout 

 with close-set spiral ridges, the 

 interstices between which are 

 minutely reticulated with longi- 

 tudinal strige, sutures of the 

 whorls Linearly canaHculately 

 impressed ; aperture pyriformly 

 rounded, tinged with orange, 

 sinuated at the upper part, lip 

 simple, continuous, operculum 

 flat, five-whorled. 



Nerita elegans, Miiller (1774), Hist. Verm. vol. ii. p. 177. 



Turbo tumidus, Pennant (1777), Brit. Zool. ed. iv. vol. iv. p. 128. pi. lxxxii. 



f. 110. 

 Turbo striatus, Da Costa (1778), Test. Brit. p. 86. pi. v. f. 9. 

 Turbo elegans, Gnielin (1788), Syst. Nat. p. 3606. 

 Pomatias elegans, Studer (1789), Faun. Helv., Coxe Trav. in Switz. vol. iii, 



p. 432. 

 Turbo refiexus, Olivi (1792), Zool. Adriat. p. 170. 

 Cyclostoma elegans, Draparnaud (1801), Tabl. Moll. p. 38. 

 Cyclostoma marmoreum, Brown (1829), JEdin. Journ. Sci. October. 

 Cyclostoma (Hricia) elegans, Moquin-Tandon (1855), Hist. Moll. vol. ii. 



p. 496. pi. xxxvii. f. 3 to 23. 

 Hab. Central and Southern Europe. Canary Islands. Britain, south of 



Yorkshire. (Under stones and about the roots of shrubs.) 



In some of our inland counties, but chiefly near the seacoast, in 

 chalk districts, Cyclostoma elegans may be collected in great abund- 

 ance in the spring of the year, among the roots of bushy shrubs. 

 In dry weather it buries itself in the soil by the aid of its muscular 

 proboscis and lobed foot. The shell is of an elegantly turbinated 

 oval form of solid substance, finely corded throughout, generally 

 of a livid drab colour, more or less articulated with red-brown 

 dots. The operculum is composed of five whorls, corresponding 

 with the five whorls of the shell, enlarging in a rotary manner as 

 the aperture of the coiling shell enlarges. 



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