HELIX §. 107. 255 



supra umbilicum dilatato. — Diam. maj. 23, min. lOy^, alt. 

 12 mill. (Mus. Cuming. et CoU. Nr. 867.) 



Helix antrorsa Pfr. in Proc. Zool. Soc. 1855. p. H3. 

 — — (Geotrochus) Pfr. Vers. p. 145. 



Habitat in insulis Admiralitatis « Haman Island. » 



1630. vitpca Fcp. -{■ (Geofrochus Pfr. in Mal. Bl. 1854. 



p. 185.) Mon.III. p 219. 



1631. Pocyi Pct. (CoU. 868. — Rv. n. 267. t. 55. — 



Geotrochus Pfr. in Mal. Bl. 1854. p. 184. — Pfr. 

 Vers. p. 145. — H. staminea Mk. — Geotrochus 

 veluti)iata Beck. — Cochlea Poeyi [Otala] Ad. Gen. 

 p. 197.) - -- 219. 



1632. Blainvillci Guill. f . . - I. - 327 



1633. H. plagiostoma Pfp. 



T. oblique umbilicata , trochiformis , tenuiuscula , leviter 

 striata, nitida, fulva; spira conica, acutiuscula; sutura sub- 

 marginata; anfr. 6 convexiusculi , ultimus antice vix descen- 

 dens, carinatus, basi planiusculus; apertura perobliqua, sub- 

 rhombea; perist. simplex, marginibus convergentibus, dextro 

 late expanso, antrorsum arcuato, basali reflexo, cum colu- 

 mellari triangulatim dilatato, libero, umbilicum non claudente, 

 angulum obtusum formante. — Diam. maj. 23^2) min. 19, alt. 

 21 mill. (Mus. Cuming.) 



Helix plagiostojna Pfr. in Proc. Zool. Soc. 1856. p. 381 ; Malak. 



Bi. 1856. p. 238. 

 Habitat in insulis Admiralitatis. 



*■ 



1634. Appowcnsis Guill. •{• Mon. I. p. 327. 



1635. pcflcxiusoula Pfp. ^ [H. hyalina Guill.) .... - - _ 327 



1636. albula Guill. f - _- 328. 



16.37. Tcpnatana Guill. f - -_ 328. 



1638. Capitium Bcns. [Rv. n. 749. t. 125. — Ch. ed. 



nov. III. p. 291. — Geotrochus Pfr. Vers. p. 145.) - III. - 220. 



1639. pileifopmis Mopic. (Coll. 869. — Rv. n. 589. 



t. 106. — Geotrochus Pfr. Vers. p. 145. — Acavus 



pileif. [Geotrochus] Ad. Gen. p. 196.) - - -219. 



1640. H. singulapis Pfp. 



T. sinistrorsa, perforata, trochiformis, solidiuscula, per- 

 oblique striata, epidermide fulvo-fusca induta; spira subcon- 

 cavo-conica, apice acutiuscula; anfr. 6^2 convexiusculi, ultimus 

 subacute carinatus , antice vix descendens, basi convexior; 

 apertura perobliqua, transverse truncato-ovalis; perist. album, 

 marginibus vix convergentibus, externo expanso, columellari 



