1836.] in the Society's Museum. 745 



eroded spire, and consequently wants the graceful appearance of the 

 western variety. I at first described it as a distinct species, but a 

 comparison with a good series from Bandras, where the species is very 

 variable, has led to their reunion. 



Lieutenant Hutton has referred the species with a mark of doubt 

 to L. limosa, which it in no wise resembles. In perfect specimens 

 the spire occupies about one-fifth of the total length. Greatest length 

 of the shell 1.4 inches. 



24. Paludina oxytropis. Testa tenui ovato-conica olivacea, de- 

 cussatim striata ; anfractibus superne carinis plurimis fuscis ornatis, 

 ultimi carina media saliente subacuta ; inferne fasciis quibusdam eleva- 

 tiusculis fuscis ; suturis inconspicuis ; apice acuta ; canali umbilicali 

 excavato ; apertura intus violacea, peristomate acuto, nigro. Long. 

 1.7 poll. Lat. 1.3. 



This is a very remarkable and elegant species. Some of the speci- 

 mens are, I believe, much larger than the one described. 



25. Paludina Lecythis. Testa tenui, globoso-conica ampullacea, 

 olivacea, glabra, rugis obsoletis decussata ; spira obtusiuscula ; an- 

 fractibus valde ventricosis, rotundatis ; suturis excavatis ; apertura 

 intus violacea spiram longitudine superante; peritremate nigro, subre- 

 flexo ; umbilico evanescente. 



The strise of growth, or rather the indications of former lips, are 

 very frequent and prominent near the back of the outer lip ; the rest 

 of the shell presents that facet-like appearance which is so remark- 

 able in some LymnaBa?. I was at first inclined to consider this shell 

 to be Gray's Pal. Chinensis, figured, but not described, in Griffith's 

 Cuvier ; but our shell is much more ventricose, the sutures are 

 more pronounced, and it is deficient in the angular appearance observ- 

 able at the base of the aperture in the Chinese species. It is a very 

 thin shell in proportion to its volume. The epidermis is greenish 

 olive in young specimens, reddish fuscous in the adult. Long. 2 poll. 

 Lat. 1.7. 



25^. Paludina Bcngalensis, Lamarck. Idem. var. balteata, fasciis 

 elevatiusculis. 



26. Paludina crassa, Hutton's MSS. and J. A. S. vol. iii. p. 90, 

 No. 5. 



Testa ovato-conoidea, ventricosa, solida, pallide virente, obsolete 

 fasciata, rugis exilissimis decussata ; anfractibus tumidis, suturis exca- 

 vatis ; spira obtusa ; umbilico subcanaliculato ; apertura intus lac- 

 tescente. Long. 1 poll. 



This species varies in configuration even in the same waters, some 

 specimens approaching to a subglobose form, while others have a 



