SYKE3 : lAXD-SHELLS FROM CEYLON. 237 



while the lii'a3 in the umbilicus are stronger and appear to be more 

 numerous. 



The Diphmmafina of Ceylon are first mentionerl under manuscript 

 names by Ncvill in 1871, and in 1875 Colonel Beddome described 

 D. {Nicida) Pedronis and D. [liicida) Ceylanica. 



10. DiPLOMJiATiNA (Nicida) Prestoni, u.sp. PI. XVI, Fig. 14. 



Testa dextrorsa, \'ix rimata, elougato-ovata, glabra, hyalina, nitidula ; 

 spira conoidea, apicc obtusula ; sutui'a impressa; anfr. 5;}-6, convexi, 

 primi regulariter crescentcs, ultimus angustior quam antepenultimus, 

 regione umbilicari impressa, basi subcarinata ; apertura ovato-circularis, 

 fere ovalis, peristomate incrassatulo, brunneo. Alt. 3-5, lat. 1*8 mm. 



Hah. — Uda Pusscllawa, Ceylon (Preston). 



A handsome little hyaline species, with a brown peristome. It may 

 be readily separated from D. Pedronis, its nearest ally, by its greater 

 size and its difference in colour and shape. Traces of spiral sculpture 

 may be seen on the last whorls. 



Other examples of this genus were found by Mr. Preston, but since 

 I am in doubt whether they belong to one or to two species, I forbear 

 to describe them until further material comes to hand. 



EXPLAXATION OF PLATE XVI. 



Figs. 1, 2. Euplecta scobinoides, n sp. 



Macrochlamys '^ circuinsculpta, n.sp. 

 Euplecta Colletti, n.sp. 



,, Isabelliua, Pfeiffer. 

 Gorilla Giiclei, n.sp. 



,, Colletti, u.sp. 

 Diplommatiua Prestoni, n.sp. 

 Cyatliopoma turbiuatiim, n.sp. 

 ,, Prestoni, n.sp. 

 ,, artatum, n.sp. 

 Polita notabilis, n.sp. 



