82 HELICIDJE. 



Vert. vol. viii. p. 79. — C. Pfeif. Deutsch. Land und Siissw. 



Moll. pt. 3, p. 22, pi. 4, f. 22, 23. — Hartm. in Sturm's 



Deutsch. Fauna, sect. 6, pt. 8, pi. 2.— Rossmassl. Iconog. L. 



und Siissw. Moll. pt. 8, p. 38, f. 534.— Morelet, Moll. Ter. 



et Fluv. Portugal, p. 72. 

 Turbo Myrmecidis, Scacchi, Osserv. Zool. vol. i. p. 1 1 (teste Philippi). 

 Zonites umbilicatus, Gray, Manual L. and F. W. Shells, p. 166, pi. 5, f. 45. 

 Pyramidida rupestris, Fitzing. Syst. Verz. Erzh. Weichth. p. 95. 

 Patula rupestris, Held in Isis, 1837, p. 916. 



Euryomphala umbilicata, and rupestris, Beck, Index Moll. Mus. Christ. Frid. p. 9. 

 Delomphalus rupestris, Hartm. Erd und Siissw. Gast. i. p. 120, pi. 37, f. 1,2, 3. 

 „ saxatilis, Hartm. Erd und Siissw. Gast. i. p. 122, pi. 37, f. 4,5, 6. 



Helix spirulu, Villa, Dispos. Syst. Conch, p. 56. 

 „ alie/ia, Ziegl. in Pfeif. Symbolae, pt. 1, p. 39. 



Minute, depressecl-turbinate, rather thin, slightly pellucid, 

 not polished, of an uniform dark umber-brown, or reddish- 

 chocolate colour, with concentric rugose striulre. Whorls 

 nearly five, convex, profoundly defined, of gradual increase; 

 the last not suddenly deflexed. Spire but little elevated, 

 apex rather obtuse. Base rounded, with a rather large 

 and very profound funnel-shaped umbilicus. Aperture 

 small, not usually much exceeding one-third of the basal 

 diameter, rather broader than high, somewhat rounded ; 

 peristome simple, acute, not reflected. 



At most the tenth of an inch in diameter; its height 

 varies owing to the spire being capable of greater or lesser 

 elevation. 



The animal is dusky, and nearly black upon the head 

 and tentacles. 



It is abundant in many localities on the faces of rocks 

 and walls, or under stones in dry places. It shows a pre- 

 ference for calcareous soils, but is not confined to them, and 

 delights in crawling upon lofty and exposed places, as long 

 ago observed by Montagu. 



