412 Dr. F. Haas on new Shells 



LIII. — JS^ew Land and Freshwater Shells collected by Dr. J. 

 Elhert in the Malay Archipelago. By Dr. F. Haas, 

 Frankfuvt-a.-M. 



The collection upon which the present paper is based was 

 made by Dr. J. Elbert in the islands of South Celebes, 

 Moena, Boeton, Kabaena, Lonibok, Soembawa, Flores, and 

 Wetar. It contained a considerable number of new species 

 and subspecies, whicli are described below. The types are 

 in the Senckenberg Museum, Frankfurt-a.-M. 



(1) Xesta everetti elberti, subsp. n. 



Distinguished from typical X. everetti by its more conic 

 form, more convex whorls, purple epidermis, and more opened 

 umbilicus. 



Diani. maj, 47, diam. min. 40 mm. ; alt. 44 mm. 



Ty2'>e locality. Tongkok, Soembawa. 



Specimen examined 1. 



(2) liemiplecta [Rhysota] rugidosa, sp. n. 



Shell perforate, depressed conic, rather solid, striulate, with 

 faint spiral lines and numerous elevated regular rugae ; some- 

 wliat shining, yellowish to brown, with a light peripheral 

 and a dark subperipheral band; whorls 5|, regularly in- 

 creasing, the upper ones somewhat flattened, only with 

 marked oblique rugae, the lower ones more convex, with less 

 maiked oblique, and faint, somewhat undulating spiral lines ; 

 last whorl very broad, not deflexed anteriorly ; suture im- 

 pressed, submargined ; aperture oblique, ovate-lunate; peri- 

 stome shaip, not expanded, coluniellar margin reflexed above 

 the umbilicus. 



Diam. maj. 49, diam. min. 41 mm. ; alt. 35 mm. 



7ype locality. Mengkoka, S.E. Celebes. 



{>pecimens examined 8. 



(3) Xesta rugosissiina wetarana, subsp. n. 



This local form differs from typical X. rugosissima by its 

 somewhat lower spire, more convex whorls, and by not being 

 carinate at the periphery of the last whorl. 



Diam. maj. 29, diam. min. 24 mm. ; alt. 19 mm. 



Type locality. Tihoe, Wetar ; another specimen from 

 Ilwaki, Wetar. 



Specimens examined 2. 



