HELIX §. 54. 55. 157 



983. bilamellata Pfr. (Coll. 475. — Rv. n. 646. 1. 113. 



— Ch. ed. nov. II. p. 203. — Pitys Pfr. Vers. 

 p. 129. — Pitys Oparana Beck. — Pitys bila- 

 mellata Ad. Gen. p. 113.) Mon.lII. p.148. 



§. 55. 



984. obtecta Lowe. (Coll. 476. — Ch. ed. nov. II. 



p. 143. — Bv. n. 878. t. 139. — Ochthephila Alb. 

 Mal. Mad. p. 34. t. 8. f. 20—22. — Pfr. Vers. 

 p. 129. — Spirorbiila Lowe Cat. p. 175. — 



Ochthephila obtecta Ad. Gen. p. 213.) - - - 145 



98.5. abjecta Lowe. (Goll. 477. — Ch. ed. nov. II. 

 p. 144. — Bv. n. 872. t. 138. — Ochtbephila 

 Alb. Mal. Mad. p. 32. t. 8. f. 1—8. — Pfr. Vers. 

 p. 129. — Caseolus Lowe Cat. p. 183. — Ochthe- 

 phila abjecta Ad. Gen. p. 213.) - - - 145. 



986. H. calculus Lowe. ■^ 



« T. rimato-subperf, subecarinata orbiculato-convexa solida 

 crassiuscula, lota subtiliter utrinque eleganter et confertim gra- 

 nulosa , supra inconspicue v. remote striata , subflavescenti- 

 cinerea , apice laevi fusco, fuscoque subindistincte bifasciata, 

 aperturam versus pallide ochracea; spira convexa raro sub- 

 conoidea, sutura distincta; anfr. 5^^ — 6 convexis, ult. subtus 

 convexo, antice deflexo, ad apert. vix subcontractiusculo; perf. 

 subrimato-punctiformi coarctala minima; apert. obliqua rotundata 

 fere circinata, labris approximatis subconjunctis; perist. subcon- 

 tinuo simpliciusculo acuto undique expanso subreflexo, — Diam, 

 maj, 6V2 — 8, min, 5^^ — 6^4, alt, 5 — 6 mill.» (Lowe,) 



Helix calculus (Gaseolus) Lowe in Proc. Zool. Soc. 1854. p. 184. 



Nec Pfr. ibid. p. \ 46. 



Habitat rariss, in insula Portosancto. 



987. H. commixta Lowe. •{• 



«T. subaperte et spiraliter perf, v, umbiL distincte carinata 

 orbiculato-depressiuscula subarctispira solida supra inaequaliter 

 hinc inde subplicato-costata, utrinque subtiliter crenulato-granu- 

 losa cinerea v, pallide fusco-cinerea; spira convexa saepe dc- 

 pressa, sutura distincta; anfr, 5 — 6 planiusculis, ult, carinato, 

 carina saepe linea exarata, expressa, antice valde deflexo, ad 

 apert, scrobiculato-constricto contracto; umbil, spiraliter rotun- 

 dato aperto nec contracto-rimaeformi; apert. perobliqua rotun- 

 data V. oblique ovali circinata; perist. continuo relevato subsoluto 

 undique reflexiusculo-expanso acuto. — Diam. maj. 6% — 6, 

 min. 4^4 — SV^, alt. SVa — 4 mill. » (Lowe.) 



Helix commixta (Caseolus) Lowe m Proc. Zool. Soc. 1854. p. 186. 



