Mr. S. Hanley on a new Indian Clausilla. 343 



Fig. 2, Ellipsoidina ellipsoides, elongate form, originally described as E. 



ohlonga. 

 Fig. 3. The same, subglobular variety, at first described as E. abbreviata. 

 Fig. 4. Same specimen as fig. 1, but with the two outer chambers partially 



broken away so as to show the internal structiu'e ; X 25 diam. 

 Fig. 5. Inner chamber of another shell, showing the central column 



(usually more or less tubular^ tri-cleft and spreading. 

 Fig. 6. Part of a central column dividing near its summit into smaller 



members, with the portion of the shell-wall immediately above 



it still adhering. 

 Figs. 7-10 are intended to illustrate the form of the external and septal 



apertures. Fig. 8 is an end view of a specimen without a neck, 



but otherwise perfect, showing what seems to be the ordinary 



condition of the external orifice. Fig. 7 is a representation of a 



similar shell broken down the centre. Figs, 9 & .10 relate to 



the inner cliambers. 

 Fig. 11. Abnormally fonned primordial chambers of an elongate specimen. 

 Fig. 12, Multicellular nucleus found in the primordial chamber of a large 



example, x 180 diam. 



XLIII. — Description of a rare Indian Clausilia. 

 By Sylvanus Hanley, Esq., F.L.S. 



Clausilia tuha, Hanley. 



Testa (pro genere) magna, subcylinclraceo-fusiformis, apicem 

 obtusum versus cylindi-acea, albido-cornea, unicolor, tenuis, 

 subdiaphana, baud rimata, lineis elevatis vix continuis 

 et (prffisertim in anfractu ultimo, ubi remotiores fiunt) 

 oblique corrugata. Anfractus 10-12, sutura profu.nda et 

 minime crenata divisi ; apicales unice convexi, subasquales ; 

 casteri convexi, et satis rapide crescentes ; penultimus major, 

 altior ; ultimus curvatus, verticaliter descendens, infra su- 

 tm-am submarginatam subcoarctatus, denique insigniter di- 

 latatus, basi rotundata nequaquam cristatus. Apertura 

 permagna, soluta, porrecta, subcordato-rotundata, undique 

 patentissima. Peristoma continuum, late expansum : la- 

 mella supera conspicua, angusta, arcuatim subverticalis ; 

 lamella infera adjacens, obliqua, magisque profunda ; plica 

 subcolumellaris parvula, verticalis ; plica palatalis (si sit 

 ulla) labrum baud attingens : lunella opacitate conspicua. 



Long. 1^ poll. 



Hal). Shan, provinc. Ind. or. Mus. Theobald, Hanley. 



I am indebted to W. Theobald, Esq., for this remarkable 

 species, which must closely resemble the American C. ejnsto- 

 mium. It was taken by Mr. Fedden from the valley of the 

 Upper Salwen. 



