92 SYKES : NON-MARINE SHELLS FROM THE E'^ST INDIES. 



The forms at present recorded from Obi are, lafiJahre, Martens 

 (described as a variety of cifreum, Ixss.), meijalostoma, Mlldff., fuh/ufann, 

 Dtz., and altms, Dtz. From all these the present species may be severed 

 by its form (like leucorrhapJie, Martens) and the remarkable expansion of the 

 lip. I much doubt if L. fiilf/urans really came from Obi ; I have it from the 

 same collector as from Hatjan. 



It gives me special pleasure to name this shell after ]\Ir. J. H. I'onsonby, 

 l)y whose knowledge I have so often profited. 



Leptopoma leucorrhaphe, .Martens. 



var. eingillUS, n. var. 



Shell like a dwarf /e«'-'>/-/7/rt^y//'', which it lestinbles in colour pattern, the 

 height, however, is only 9 in place of 12 millim. ; spirals more numerous and 

 more closely-set, there being 6 instead of 5 on the last whorl l)Ut one. The 

 habitat is Gebi in place of Dodinga, Halmahcra, from which latter I have a 

 typical specimen (coll. Dohcrty). 



Ameria plicaxis, n. sp. 



PI. ix, fig. 17. 



Shell closely related to Ameria ohiana, Rolle, but it may be at once distin- 

 guished by the shape of the spire, which in that species is very short and 

 swollen, the upper whorls beinti very convex. In the present form the spire 

 is drawn out and is of the usual "Physoid" shape: the columella has also 

 the strong twisted fold characteristic of A. ohiana. 



Alt. 22 ; diani. max. 11 ; alt. apert. 12 ; lat. apert. 5.5 millim. 

 Hah.— Ohi. 



It has been suggested to me that this may be the Physa molucceiisia of 

 Lesson. His description is very brief and I fancy the species will prove to 

 be unidentifiable ; it must however be sought in the fauna of Amboina. The 

 only figure I have seen purporting to represent it. is that in the "Conch. -Cab," 

 which is certainly not the present species. It may also be noted that Lesson's 

 shell was 18 millim. in height. 



EXPLAX.VTION OF PL.\TE IX. 



Fig. I. Papiiiiui scinibrniiiica, n. sp. 



F'ig. 2. Papiiiini ccolomln, n. sp. 



Fij^s. 3,4. Pcnicria cancfnaiia, u. ):>\-^. 



Figs. 5,6. Obba siibf^rciiiiilata, n. s\\ 



Figs. 7, 8. Planispira (Cristii^ibba) gcbiciisis, n. sp. 



Figs. 9, 10. Planispira (Cristigibba) fntlistorfcri, n. sp. 



Figs. II, 12. Tivclioiiiorplia giilicliiii, n. sp. 



Figs. 13, 14. Trocliomorplia daitizcnbcrgi, n. sp. 



Fig. 15. Lcptopo)iia ponsoiibyi, n. sp. 



Fig. 16. Albcrsia icaigioiicnsis, n. sp. 



Fig. 17. Ameria plica.xis, n. sp. 



