riELlX §. 53. 259 



margine columellari dilatalo, appresso, excavato. — Diam. maj. 51, 

 min. 38, alt. 30 mill. (Coll. Saui. et Walton.) 



Helix cognata (Helicogena) Fer. pr. 76. Hist. i. 44. f. 4. 



— — Pfr. Svmb. III. p. 72. 



— — Chetnn. ed. II. Helix N. 260. t. 4.3. f. 5. 6 



Habitat in insulis Antillis? (Fer.) 



Obs. Tria vidi specimina in colleclionibus Londinensibus prorsus aequalia, 

 forma ad H. asperam F6r. accedentia , sculplura el aperlura edenlula faciie 

 distinguenda. 



677. H. pondcrosa Pfr. M/,.M fJ:f.J^/oyd. 



T, imperforata, globoso-depressa, tumida, solida, pondeVosa, 

 laeviuscula (striis incrementi et concentricis confertissimis vix 

 conspicuis), alba, basi epidermide nitida, pallide cornea induta; 

 anfr. V/i convexiusculi, ultimus subangulatus, fasciis albis hydro- 

 phanis infra angulum interdum obsolete notatus; columella recta, 

 lata, perobliqua; apertura subauriformis , intus alba; perist. late 

 reflexum. — R. a. = 1 : 2. — Diam. maj. 46, min. 34, alt. 27 mill. 

 (Coll. Nr. 401.) 



Helix ponderosa Pfr. in Proc. Zool. Soc. 1845. p. 38. 



— — Chemn. ed. II. Helix N. 675. t. 108. f. 3. 4. 



— .... Fer. hist. t. 28 A. f. 5. 6. 



Habitat in provincia Iloconensi insulae Luzo» (Cuming). 



Obs. Forma H. latitanti similis, differt magnitudine, colore et sculptura 

 minutissima. 



678. H. lignaria Ffr. 



T. imperforata, subgloboso-depressa, solida, laevigatajCa^gta- 

 nea, fasciis variis epidermidis hydrophanae, fusco-cinereae ob- 

 ducta; spira vix elevata, obtusa; anfr. 4 '/2 vix convexiusculi, cele- 

 riter accrescentes, ultimus ad peripheriam subangulatus ; colu- 

 mella strictiuscula , perobliqua, lata, planata, fusca; apertura 

 rotundato-Iunaris, intusalbida; perist. subincrassatum, brevissime 

 reflexum, fusco-marginatum. — Diam. maj. 45, min. 36, alt. 

 27 mill. (Mus. Cuming.) 



Helix lignaria Pfr. in Proc. Zool. Soc. 1 846. p. 111. 

 Habitat prope Surigao insulae Mindanao. 



Obs. Differt ab H. meianocheila Val. spira depressa et coiumella obliqua, 

 ab H. matrueli Sow. spira depressiore , columella non dentata , elc. 



679. H. matruelis Sowerby. ''^< 



T. imperforata, globoso-depressa, tenuiuscula, oblique striata, 

 nigricans, epidermide fusco-cinerea hydrophana induta; area co- 

 lumellaris nitide lutea, fascia nigricante circumdata; spira parum 



17* 



