210 PROCEEDINGS OF THE MAL.VCOLOGICAL SOCIETY, 



intonuediatc between tlic two : it lias half a whorl more tlian A. tristis, 

 the whorls increase more slowly, and the aperture is comparatively 

 smaller. 



16. Helicina (Sulfurina) sphj^roconus, n.sp, PI. XV. Figs. 10 

 and 10«. 



Testa globoso-conoidea, tenuis, subpellucida, transverse subtilitcr 

 striatula, spiraliter confertim lirulata, subnitens, flava, subtus 

 erubesccns ; spira plus minusvc conico-elevata, lateribus striatis. 

 Anfr. 41 planiusculi, ultiinus ad pcriphcriam confuse subangulatus. 

 Apcrtura modice obliqua, oblique acuminato-ovalis, peristoma modice 

 cxpansum, sublabiatum, margo basalis cum columella angulum valde 

 distiuctum formans, callus columellaris latiusculus, subgranulosus, 

 citrinus. Operculum oxtus album, sat concavum, intus medio igneum. 

 Diam. maj. 7, alt. 5 5 mm. 



JIab. — Prope Constantinhafcn, leg. cl. I. Kubary. 



Somewhat similar to II. Jobiensk, Tapp.-Can., but smaller, higher, 

 more densely decussate, the peristome less expanded, etc. 



EXPLANATION OF PLATE XV. 



Fig. 1 and \a. Planispira Papuana. 



,, 2. Satsuma eucouus. 



,, 3. dasypleuris. 



,, 4. Papuina Kubaryi. 



,, 5. planogyra. 



,, 6. Buliminus colouus. 



,, 7. Cyclophorus Kubaryi. 



,, la. operculum. 



,, 8. Cyclotus canaliculatus. 



,, 8a. operculum. 



,, 9. Adelomorpha laeta. 



,, 9^7. operculum. 



,, 10. Ilelicina sphajroconus. 



,, 10«. operculum. 



