165 
nato, undique convexo-rotundato, antice deflexo carina evanescente. 
Apertura lunato-rotundata. Peristoma fere rectum simpléx acutum 
v. obtusiusculum, intus sublabiatum, marginibus equaliter omnino 
rotundato-arcuatis, labris remotis disjunctis. Awis (se@pe roseus) 
tenuis verticalis intrans, labro arcuatim junctus. 
11. H. memsBranacea, Syn. Diagn. p. 3. no. 2. T. imperf. 
depresso-globosa subcarinata tenuissima membranacea flexilis un- 
datim ruguloso-malleata nitidiuscula roseo-flavescens rarius vires- 
cens pellucida, opaco-lacteo ad carinam suturamque presertim 
sed et alicubi coagulato-liturata, fascia carinali unica angusta 
opaco-albida ; spira convexo-depressa, apice obtusa; anfr. 4, cito 
crescentibus convexiusculis, ult. antice vix descendente, sutura 
distincta ; apert. transverse lunato-ovali, labris disjunctis, lamina 
ventrali tenuissima v. nulla; perist. columellaque simplicibus 
acutis. 
Diam. maj. 10-12, min. 83-104, alt. 7-9, axis 4-6 mill. Anfr. 
4-43. 
Vitrina marcida, (Gould) Pf. ii. 507? 
Hab. in Madera vulg. 
Obs. 1. Animal (vera Helix, nec Vitrina) pede vix intra testam 
retractili. 
Obs. 2. Cum H. furva juniore, cui simillima, haud confundenda. 
Differt testa nitida leeviore, semper imperforata, membranacea tenuiore 
flexili (potius quam fragili), pallidiore pellucidiore lacteo coagulatim 
liturata efasciata, spiree anfr. convexioribus apice obtusiore, carina 
obsoletiore nec fusco-fasciata v. tessellato-maculata. 
12. H. rurva, Prim. p. 40. t. 5. f.2; Kiist. M. et C. p. 231. 
no. 202. t. 29. f. 20-22; Pf.i. 29. 
Hab. in sylvis Madere, rarior. 
Obs. Neglectis prout levioribus varr. a. et §, Prim. 1. c., digno- 
scuntur varr. duee : a. major, fusco tessellatim unifasciata (Prim. 1. ¢. 
t. 5. f. 2; Kiist. M. et C. 1. c.); et 6. minor tenuior carina obso- 
letiore. 
13. H. eruseEscens, Prim. pp. 40, 41; Kiist. M. et C. p. 38. 
no. 422; Pf. 1. 270. 
Hab. in sylvis Maderee, et in Ins. Desertis. 
Obs.1. Distinguuntur varr. 3 Maderenses (a, (3, yy) minores v. ma- 
jores, fasciatee v. efasciatee, spira plus minus exserta, cum subvar. 
rhodostomatibus v. leucostomatibus; adjecta var. 0, in Ins. Des. 
Australi degente, maxima inflatiuscula tenuiore lete colorata roseo- 
fulva, subquinquefasciata (H. hyena, Syn. Diagn. p. 3. no. 3). 
Obs. 2. Icon. Prim. 1. c. t. 5. f. 3. ad Subv. 1, Kiisteri 1. c. t. 
71. f. 5, 6. ad Subv. 2, var. a. referende. 
Obs. 3. H. advena, Webb, Syn. Moll. Canar. App. p. 21. no. 1. 
Exempla orig. typ. cl. Auct. in Mus. Brit. reposta, ad H. eru- 
bescentis, var. y, nostram certissime pertinentia, ob characterem 
peculiarem procul omni dubio ex Ins. Desertis Septentr. v. Majore 
Media, nec (quod revera ipse cl. Auctor minime asseveravit) ex Ins. 
