PULMONATA. 



69 



This curious shell is very like young specimens of H. Busbyi, 

 Gray, but imperforate. 



6. IIelicarion Verreauxii. 



Shell depressed, slightly striated, thin, diaphanous, little 

 shining, of an olivaceous-fulvid colour ; si)ire nearly flattened ; 

 suture impressed, bordered ; whorls three and a half, enlarging 

 rapidly, the last depressed, narrow and rather flat beneath ; 

 aperture very oblique, large, lunarly ovate ; peristome simple, 

 sharp, with the margins approximated to each other, right mar- 

 gin curved forwards, columellar margin shortly receding, slightly 

 arched. Height 6, greatest breadth 13, least breadth 6 mill. {Pfr.) 



Vitrina Verreauxii, Pfr. in Proc.Zool. Soc. 1849, p. 132; Mon. 



Siippl. p. 5. 

 Hub. Australia (Verreaux). 



7. Helicarion castanea. 



Shell depressed, with the periphery ovate, shghtly striated, 

 very polished, chestnut-coloured ; spire flat ; w horls three, scarcely 

 convex, the last large, with a broad membranaceous edge be- 

 neath ; aperture a little oblique, lunate-oval ; peristome with a 

 yellow stripe behind its membranaceous margin. Height 5, 

 greatest breadth 9, least breadth 7 mill. {Pfr.) 



Vitrina castanea, Pfr. in Proc. Zool. Soc. 1851, p. ; Mon. 



Suppl. p. 5; Ic. t. 6. f. 1-4. 

 Hub. Australia. 



8. Helicarion robusta. 



Shell helicoid, transverse, depressed-globose, rather strong, 

 polished, veiy bright, pale yellowish-green, striated with regular, 

 obtuse lines of growth ; spire obtuse ; whorls three, the last large ; 

 apex subcentral ; rounded beneath ; ajierture rounded, left mar- 

 gin reflected above, forming a small umljilical fissure. Breadth i, 

 axis \ poll. 



Vitrina robusta, Gould, Proc. Bost. Soc. 1846, 181 ; Exped. 

 Shells, 1851, 10. f. 11. 

 Pfr. Mon. Helic. ii. 508. 

 Hab. East coast of Australia. 



Polynesian : animal unknown. Perhaps Vitrinae. 



9. Helicarion Keppelli. 



Shell depressed, with the periphery' oblong, thin, slightly and 

 arcuately striated, principally near the suture, highly polished. 



