122 PROCEED IN fiS OF THE MALACOLOGICAL SOCIETY, 



ZepfopomaSalmahericum,^tTiibeU.. Ci/cJotus plt'cosus, Martens. 



crenilahre, Strubell. Omphalotro'pis Ceramensis^ Pfr. 



cinctellum, Pfr. Ilclicina parra, Sow. 



Ci/clotus pniinosiis, Martens. zoa, Pfr. 



DESCRIPTION OF THE NEW SPECIES. 

 1. Planispira (Cristigibba) Giloloensis, n.sp. Figs. 1, 2. 



Testa anc;nste umbilicata, orbicularis, alba, lincis incremcuti 

 tonuibus striata ; spira concave depressa ; anfractus 4, convexi, 

 nltimus irregularis, pone aperturam gibbosus ct inferne subinfiatus, 

 antice leviter descendens ; apertura alba, oblique lunata ; peristoma 

 album, anguste expansum, marginibus conniventibus. Diam. maj. 

 145, min. 11-5, alt. 8mm. 



Hab. — Halmahera or Gilolo Island. 



This species somewhat resembles Helix leptocheila,'^ as regards form. 

 The colour and also the shape of the aperture, however, arc different. 





2. Planispira (Cristigibba) lacteocincta, n.sp. Figs. 3, 4. 



Testa orbicularis, anguste umbilicata, sordide albida, fasciis rufo- 

 nigris 1-2 et fascia mediana opaca lactea omata, epidermide crassiuscula 

 induta ; spira plana, in medio leviter depressa ; anfractus 4, convexi, 

 ultimus antice breviter descendens, lineis incrementi leviter obliquis 

 sculptus, inferne aperturam versus subinfiatus, dein constrictus ; 

 apertura late lunata, intus concolor, zonis externis translucentibus ; 

 peristoma anguste expansum, albidum, marginibus conniventibus, 

 columellari leviter reflexo. Diam. maj. 16, min. 13, alt. 8 mm. 



Var. Testa pallida, zona opaca lactea ad peripheriam ornata. 

 Diam. maj. 15, min. 11 mm. 



Hob. — Batchian or Batjan Island. 



Both the specimens of this interesting species have the opaque, 

 cream-coloured zone at the periphery, but only one of them is 

 ornamented with colour-bands. The upper zone is upon the upper 

 surface of the body- whorl, the lower one being at the periphery and 

 bordered below by the opaque, cream-coloured band. None of the 

 bauds reach to the peristome, and the whitish zone extends only 

 about half-way round the whorl. The constriction and gibbosity of 

 the body -whorl behind the lip are only observable upon the lower 

 surface. 



' Tapparone-Canefri, Ann. Mus. Civ. Geneva, xx, 1S84, jil. i, figs. 14-16. 

 Pilsbiy, Man. Couch., ser. ii, vol. vi, pi. Ixi, figs. 25-7. 



