1S71.] F. Stoliczka — Notes on terrestrial Mbllusca. 153 



Asiat. Soc. XXXVII, pt. II, pi. iv, fig 2), differing from it by its 

 constant smaller size, more tumid or convex, and more widely cos- 

 tulated whorls, and by the aperture being at the columellar baso 

 rounded or nearly so, instead of deeply angular and canaliculate, 

 as it always appears to be in Puppensis. 



The present species was found to be very common on the perpen- 

 dicular limestone cliffs at Damotha, especially in localities where 

 a little water trickled down the rock. The animals seemed to feed 

 on the minute algae which were growing in the locality. 



Diplommatina [Palaina] erispata, Stol., pi. vi, fig. 4. 



Diplommatina [Pal.] testa conoidea, medio latissima, sordide 

 albida, anfractibus 7, primis duobus (rare 1 1) mammillatis, lsevigatis 

 convexis, sequente convexiusculo, confertim lamellose striato, ceteris 

 medio angulatis, crasse lamellatis, lamellis crebris, inaequalibus, te- 

 nuibus, undulatis et crispatis, ad peripheriam angulosam spiniforme 

 productis, latere interiore excavatis ; anf. penultimo haud distincte 

 constricto ; ultimo angustiore, basi convexiusculo ; apertura perobli- 

 qua, circulari, extra dilatata, intus continua, laevi, supra leviter 

 adnata, ad latus columellare incrassata et infra dente pliciforme, vix 

 distinguendo, instructa, margine interno acuto, undique libero ; 

 peristomate externo tenui, lamelliforme undulato et late expanso. 

 Alt. testae 25; diam. anf. penult, (spinis inch) 1*5; diam. apert. 

 int. 0*8, d. ap. cum perist. 1* m.m. 



Animal albidum, tentaculis cinereo atratis ; operculum corneum. 



Habitat. Damotha, prope Moulmein ; rarissime cum precedente. 



This is the first species from British India referable to the sub- 

 genus Palaina of Semper (vide Journ. de Conch. 1863, p. 291, and 

 1866, p. 348), although, if the subgenus should be retained, it can- 

 not include all the species referred to it by its author. The various 

 subdivisions of Dipplommatina appear to me to have been suggested 

 more with a view to geographical distribution, than to the necessity 

 of conchological grouping. Whether the shells are coiled to the right 

 or left constitutes no generic difference in Dipplommatina^ it does not 

 in cases of Helix or Bulimus &c, even as regards specific distinction. 



The peculiar characteristic of Diplommatina lies in the very 

 marked constriction of the penultimate whorl, (compare Journ. 



