1871.] F. Stoliczka — Notes on terrestrial Mollusca. 147 



In tlie Cyclostomacea I have described several new species, and 

 of others, which were met with, I have only noted the external 

 characters of the animals or shells. I have avoided going into ana- 

 tomical details here, because I hope to place them on record in a 

 contemplated Monograph of the Indian and Burmese Oy clostoma- 

 cea, to be published with the co-operation of Mr. W. T. Blanford. 



Among the Helicacea, or Pulmonata, as usually restricted, the 

 anatomical details form the greater part of the work. The correct- 

 ness of Gray's and Dorhn's suggestions to unite Streptaxis, JEnnea 

 and Streptostele into a separate group has, I think, been satisfac- 

 torily proved, and the relation of these forms to Testacella will be 

 pointed out further on. Of the Clausiliidce I have given some notes 

 regarding CI. PMlippiana, as the anatomy of no Indian Clausilia 

 has yet been published. In the Pupidce two interesting new 

 species will be found described a Pupa and a Hypselostoma. In the 

 Helicidce, the propriety of the generic designations of Plectopylis 

 and Trachia was found to be supported by the examination of the 

 anatomy of the animals. Among the Zonitidce, at last, I have in a 

 similar way recorded the propriety of the generic names Sesara and 

 Soplmia, and there also will notes be found on the anatomy of Ma- 

 crochlamys, Rotula, Mycrocystis and a newly proposed genus Conulema. 



Group. CYCLOSTOMACEA. 



Fam. CYCLOPSORIDj®. 



The species of CycIopJiorus (as restricted), known to occur in 

 the neighbourhood of Moulmein : are (1) G. JIaugMoni, Theobald, 

 (from Moulmein itself), a species closely allied to Sowerby's 

 aquila; (2) G. affinis, Theobald, (from Damotha), somewhat allied 

 to Pfeiffer's excellens ; and a third form is found at the Farm-caves, 

 it has the angular periphery of Haughtom, but a spotted shell like 

 affinis or Siamensis. All the forms may be considered as varieties 

 of one and the same species, but in order to ascertain whether 

 Theobald's name Haughtoni is applicable to them, a close compari- 

 son of typical forms of several of the allied species from Siam and 

 adjoining countries must be made. I will not enter now upon this 

 question, as the three varieties noticed have lately been figured in 

 the ' Conchologia Indica,' though by no means characteristically. 



