PARTULA.— Plate IV. 



The compressed form of this shell is characteristic, and 

 ) also is the livid-purple colouring of the interior. 



Species 21. (Mus. Cuming.) 



Partula Navigatoria. Vart. testa oblongo-ovatd, cras- 

 siusadd, medio ventricoad, angtiste umbilicatd, anfrac- 

 tibus subriide oblique strialis, vix spiraliter lineaiis, 

 aperturd auriculaid, columella labroque late calloso-re- 

 fiexis ; fulvo-castaned, lahro albido. 



The Navigator Partula. Shell oblong-ovate, rather 

 thick, slightly ventricose in the middle, nan-owly um- 

 bilicated, whorls somewhat rudely striated, scarcely 

 spii'ally lineated, apertui-e auriculate, the lip and 

 columella being broadly callously reflected ; fulvous 

 chestnut, lip white. 



Pfeiffer, MS. (Mus. Cuming). 



Hab. Navigators' Islands. 



The apertm-e of this species, which may be distinguished 



by its oblong-oval form, slightly ventricose in the middle 



only, is veiy similar to that of P. Otaheitaiui. 



Species 22. (Mus. Cuming.) 



Partula solidula. Tart, tesid acuminato-ovatd, sub- 

 gibbosd, compresse umbilicatd, soliduld, anfractibits 

 planiconvexis, oblique irregulariter striatis, Uneis spi- 

 ralibus impressis minute sculptis, aperturd atiricnlatd, 

 columella labroque late calloso-rejlexis ; stramined, 

 apice inierdum ru/escente, labro a/bo. 



The solid Partula. Shell acuminately ovate, rather 

 gibbous, compressly umbdicated, soUd, whorls flatly 

 convex, obliquely irregidarly striated, minutely sculp- 

 tui'ed with spiral impressed lines, aperture auriculate, 

 the lip and columella being broadly callously reflected ; 

 straw-colour, sometimes reddish at the apex. 



Hab. Society Islands. 



A solid subtransparent shell, having the character and 

 substance of P. Otaheitana with the form and coloui'ing of 

 P. gibba ; excepting that the whorls are not crowned 

 with the white sutural baud which is constant in that 

 species. 



Species 23. (Mus. Cuming.) 

 Partula decussatula. Part, testa subabbreviato-uvatd, 

 tenui, injtatd, aitfractibus quatuor, convexis, striis 

 obliquis luieisque spiraliius impressis eximie decussatis. 



aperturd suicontradd, rotundato-ovatd, labro pariaii 

 reflexo ; pellucido-albd. 



The decuss.ated Partula. Shell somewhat abbre- 

 viately ovate, thin, inflated, whorls four in number, 

 convex, faintly decussated with oblique striae and 

 spii-al impressed lines, aperture rather contracted, 

 rotundately ovate, lip but little reflected; trans- 

 parent white. 



Pfeiffer, MS. (Mus. Cuming). 



Hab. ? 



A thinner and more inflated shell than P. hyaliiia, and 

 equally transparent. 



Species 24. (Mus. Cuming.) 



Partula spadicea. Part, testd acuminato-oblongd, ten- 

 uiculd, compresse umbilicatd, anfraciibus convexis, striis 

 obliquis lineisque spiralibv^ impressis eximie decussatis, 

 aperturd ovatd, parviusculd, columelld plano-appressd, 

 labro declivi-rejlexo ; pelltwido-spadiced, labro albido. 



The fawn Partula. Shell acuminately oblong, rather 

 thin, compressly umbOicated, whorls convex, faintly 

 decussated with oblique strife and spiral impressed 

 lines, aperture ovate, rather small, columella flatly 

 appressed, Up reflected in a slanting direction ; trans- 

 parent fawn-colour, lip whitish. 



Hab. Marquesas Islands. 



A delicate subtransparent shell, of a uniform trans- 

 parent fawn-colour. 



Species 35. (Mus. Cuming.) 



Partula Hebe. Part, testd abbreviato-conicd, globosd, 

 gibbosd, soliduld, umbilicatd, anfractibus rotundatis, 

 striis obliquiis subrugosis lineisque spiralibus impressis 

 decussatd, aperturd orbiculari, callositate erectd supra 

 colmiiellam, columelld labroqiie calloso-rejlexis ; semi- 

 pellucido-albd. 

 Uebe's Partula. Shell abbreviately conical, globose, 

 gibbous, rather solid, umbUicated, whorls rounded, 

 decussated with rather rough oblique stria? and 

 spiral impressed lines, aperture orbicular, with an 

 erect callosity above the columella, lip and columella 

 callously reflected ; semitransparent white. 

 Pfeiffer, Pro. Zool. Soc. 1846. p. 39. 

 Hab. Society Islands. 



Distinguished by its short globose manner of convo- 

 lution. 



