BALEA §. 1. 393 



Turbo perversus Linn., Chemn., Mont. 



Pupa fragilis Drap., Lam.^ elc, perversa PM. 



Helix percersa Fer. 



ClausiUa fragilis Stud. etc. 



Balaea fragilis Leacli, Brown III. rec. conch. Gr. Brit. ed. 1844. 



p. 37. t. U. f. 11. 

 Balea fragilis Gray, Mart. in Alb. Helic. ed. II. p. 271. 



— perversa Flem. , Pfr. Mon. Helic. II. p. 387; IV. 



p. 714. 

 _ — Sporleder in Malak. Bl. VII. 1860. p. 115. 



(? Specimina notis nonnullis ad B. Rayia- 

 nam Bourg. accedunt.) 



— — De Paiva Mon. moll. Mader. p. 140. 

 Balia fragilis Swains. 



— perversa Bourg. in Rev. et Mag. Zool. 18S7. p. 550. 



t. 17, f. 1 — 3. 

 Habitat in plerisque Europae terris, nec non in ins. Madera. 



2. B. pyrenaica Bourguignat. -f 



«Testa sinistrorsa, perforata, eleganter fusiformi-turrita, 

 tenera, subtilissime costulato-striata^ sericina, olivaceo-cornea; 

 anfractibus 'II convexiusculis; ullimo basi angulato-rotundato; 

 apertura piriformi, in parte superiore coarctata, inferiore dila- 

 tata ; columella simplice, reflexa; peristomate simplice, breviter 

 expanso; margine externo paululum flexuoso; marginibus appro- 

 ximatis, callo validum tuberculum medianum praebente, junc- 

 tis. — Long. 12, diam. 3 miU. » i(B.) 



Balia pyrenaica Bourg. in Rev. et Mag. Zool. 1837. p. 553. 

 t. 17. f. 7 — 9. 



Habitat in Pyrenaeis. 



Obs. «Differt a perversa forma graciliore, striis subtiiioribus, perfo- 

 ratione distincta, apertura piriformi, tuberculo parietis mediano.» 



8. B. Rayiana Bourguignat. -f 



« Testa sinistrorsa, vix rimata, obesa, conico-turrita, tenera, 

 sericina, olivaceo-cornea, subtilissime costulato-striata; spira 

 turrita, apice levi, obtusiusculo; anfraclibus 8 — 9 convexius- 

 culis; ultimo basi rotundato; apertura paululum angulata, fere 

 rotundata; columella simplice, reflexa; peristomate simplice, 

 brevissime expanso; marginibus callo tenui, juxta insertionem 

 labri externi tuberculura parvulum emittente, junctis; margine 

 externo vix sinuoso. — Long. 7^^, diam. 3 mill. » (B.) 



