118 IIELIX i^. 23. 



extus dilalalus; apcrtura ovala, antice angulata, marginc obtusius- 

 cula. — Diam. 44, alt. 23 niill. (Guill.) 



Carocolla Triloniensis Le Guill. in Rev. zool. 18 45. Mai p. 8 8. Nec 



H. Tiitonlens. Guill. 18 42. 



llelix deciivis Pfr. Symb. III. p. 18. 

 llabitat aci Triton-Bay Novae Guineae. 



304. H. Guerini Pfr. 



T. unibilicala, trochiforniis, epiderniide fusca, rugosa induta; 

 anfr. TJA vix convexiusculi, basi carinali: carina pilis confertis 

 dense ciliata; basis convcxiuscula; umbilicus angustissimus, per- 

 vius; apertura lata, lunaris; perist. simplex, marginibus callo 

 tenuissimo, nitido junctis. — Diam. maj. 16, min. 15, alt. 10 mill. 

 (Coll. Nr. 160.) 



Helix Gucrini Pfr. in Rcvue zool. 18 42. p. 304. 



— — Pfr. Symb. U. p. 29. 



— — Phil. Icon. I. 3. p. 50. l. 3. f. 6. 



_ _ Chenm. ed. II. Helix N. 544. t. 87. f. 15. 16. 



liabilat in montilius Neelglierries Indiae orientalis (Perrottet). 



305. H. Barclayana Pfr. 



T. umbilicata, depresso-turbinata, confertim oblique costata, 

 alba, epidermidc fusco-olivacea induta; spira conoidea, apice 

 obtusa; sutura profunda; anfr. 5 '/2 convexi, ultimus medio cari- 

 natus (interdum obsolete bicarinatus), basi convexiusculus; um- 

 l)ilicus mediocris, fere cylindricus; apcrtura subverticalis, qua- 

 drangularis; perist. simplex, acutum, margine columellari verti- 

 calitcr descendente, cum basali angulum formante. — Diam. maj. 

 18, min. 16, alt, 1:2 mill. (Mus. Cuming.) 



Helix Barclayana Pfr. in Proc. Zool. Soc. 18 46. p. 1 10. 

 llabitat in insula Mauritii. (isle de France: Barclay.) 



300. H. bermudensis Pfr. 



T. umbilicata, conoideo-lenticularis , tenuiuscula, carinala. 

 leviter ruguloso-striata, pallide fuscescens, fulvo-marmorata, cin- 

 gulo castaneo supra et iatiore infra carinam ornata; anfr. 7 vix 

 convexiusculi, lentc accrescentes; umljilicus angustus, pervius; 

 a|)ertura sul>trapezia; perist. simplex, rectum, intus incrassatum, 

 album, marginibus callo junclis, columellari verticali. I)revi , re- 

 flcxiusculo, cum basali angulum subreclum formantc. — Diam, 

 maj. 23, inin. 21 , alt. 12 mill. (Spec. coll. Sauliae.) 

 Helix bcrinudensis Pfr. iu Proc. Zool. Soc. 18 45. p. 67. 



