NO. 51. — 1900.] CEYLON MALACOLOGY. 



137 



54. — Sitata Operiens, Sykes. • 



This species has the same habitat as the last, which it 

 somewhat closely resembles in appearance, the distinguishing 

 sculpture of the shell being invisible until the periostracum 

 is worn off. 



55. — S. pyramidalis, Sykes. 



I have a few specimens from the lower part of the district. 

 It also occurs in Uva. 

 Hab. — In leaf mould beneath thick scrub. 



56. — PhilalanTca secessa, Gocl win-Austen. 



This species, the first of its genus to be recorded from 

 Ceylon, is scarce in this district. I have found it more 

 common in Pundalu-oya. 



Hab. — Among fallen leaves in scrub, 3,600 ft. 



The animal is pale olive-green. 



Fam. Cyclostominje. 

 57. — Cyclophorus vescus, Sykes. 

 Abundant amongst decaying leaves in forest, 4,000 ft. 

 The shells are very variable in size and colouration. 



The species is also common in Dimbula, Pundalu-oya, and 

 Haputale. 



58. — G. binoyce, Sykes. 



A form closely related to the last, but readily distin- 

 guished by its much finer striation. The young shells of 

 this species are marked with brown velvety transverse 

 bands, which disappear in adult specimens. The young 

 shells of G. vescus are quite plain. 



Hab. — In mould beneath scrub. Binoya estate, 3,600 ft. 



59. — Leptopoma semiclausum, Pfr. 



This is a low-country species, seldom seen above Nawala- 

 pitiya. I have a few specimens from the lower end of the 

 district, 2,000 ft. 



The animal is pale red-brown with yellow tentacles. 



