HELIX §. 75. 257 



1G69. H. Roratongensis (Pithys) Pease. •{• 



« T. orbicularis, umbilicata, tenuiuscula, radialim tenuissime 

 elevato-slriata ; spira planulala, sutura bene impressa; anfr. 5, 

 convexi, ullimus ad peripheriam rotundatus; apertura vix obliqua, 

 lamellis 5 munita, 3 in pariete aperturaii, 2 in margine basali; 

 perist.simplex, rectum; flavidoet rufo tessellato-strigata. — Diam.3, 

 alt. '|3/4 mill..) (P.) 



Pilhys Roralongensis Harper Pease in Crosse Journ, Concli. XVIII. 



1870. p. 39o. 

 Pitys Roratongemis Pease in Proc. Zool. Soc. 1871. p. 453. 

 Habitat in insula Roratonga. 



OI)S. «Species affinis //. radiellae Pfr. et consbniU Pease.» 



1670. H. analogica (Pithys) Peasc. "f 



«T. orbicularis, lenuiuscula, late umbilicata, radialim fle- 

 xuoso-costata, interstitiis obsolete tenuiter striata, flavida, irre- 

 gulariter rufo-maculata aut strigata; spira depresso-elevata, apice 

 obtusa; sutura valde impressa; anfr. 7, convexi, ad suturam 

 subangulati; anfr. ultimus ad peripheriam rotundatus; apertura 

 obliqua, semilunaris, lamellis 5 munita, 3 in pariete aperturali, 



2 in margine basali; perist. simplex , rectum. — Diam. 5, alt. 



3 mill.» (P.) 



Pithys analoyica Harper Pease in Crosse Journ. Conch. XVIII. 



1870. p. 396. 

 Pitys analogica Pease in Proc. Zool. Soc. 1871. p. 454. 

 Habitat in insulis « Marquises » dictis. 



1671. H. verecunda (Pithys) Pease. -J- 



«T. planorboidea, tenuiuscula, late umbilicata, radiatim te- 

 nuiter et conferte elevato-costata, interstitiis striatis; spira pla- 

 nulata, depressa; anfr. 6, plano-convexi, ultimus ad peiipheriam 

 rotundatus; sutura impressa; umbilicus % diametri occupans; 

 apertura vix obliqua, semilunaris, lamellis 5 munita, 3 in pariete 

 aperturah', 2 in margine basali; perist. siinplex, acutum; flaves- 

 cens, rufo maculata aut flexuose strigata. — Diam. 5, alt. 

 2 mill.» (P.) 



Pithys verecunda Harper Pease in Crosse Journ. Concli. XVIIf. 



1870. p. 397. 

 Pitys verecunda Pease in Proc. Zool. Soc. 1871. p. 454. 

 Habilat in insulis «Marquises» dictis. 



* 



1672. parvidcns Peasc. •J' V. 220. — Pitys parvidcns Pease in Proc. 

 Zool. Soc. 1871. p. 474. — Taheiti. " 



VII. a 



