446 MR. W.T. BLANFORD ON NEW MOLLUSKS. [June 24, 
ovata, antice subeffusa ; peristoma tenue, margine externo subrecto, 
basali antice porrecto, columellari sinuato. Operc.? 
Long. exempli majoris decollati 25 mm., diam. 15; apert. oblique 
13 longa, 8 lata. Exempli mediocris (etiam decollati), long. 13, 
anfr. ultimi 11, diam. maj. 14, min. 123; apertura oblique cum pe- 
ristomate 13 longa, 83 lata. 
fab. in flumine Iravadi superiore ad Malé et Bhamo. 
Distinguished from the numerous varieties of M. variabilis, Bens., 
by the external margin of the peristome not being sharply curved 
outwards close to the base, but nearly straight, with a very gentle 
concave curve throughout. Unfortunately, the opercula have dis- 
appeared from all the specimens, as well as from some collected by 
myself in 1861. 
4. BirHYNIA IRAVADICA, Sp. nov. 
Testa subrimata, ovato-conica, solidula, sub lente minutissime (fere 
obsolete) decussato-striata, pallide olivacea vel fulva. Spira ele- 
vato-conica, apice obtusiusculo sepe eroso, sutura parum impressa. 
Anfr. 6, convexiusculi, ultimus ad peripheriam obtuse angulatus. 
Apertura subverticalis, ovata, postice angulata, antice subangulata 
et subeffusa; peristoma tenue, rectum, marginibus callo junctis, 
columellari verticali cum basali angulum fere rectum faciente. 
Operc. normale. 
Long. 11, diam. 63 mm.; apert. 6 mm. longa, 4 lata. 
Hab. in paludibus et rivulis prope Mandélé urbem principalem 
hodiernam regni Avze. 
Intermediate between B. ceranospatana, v. Frauenfeld (B. cera- 
meopoma, Bs. MS.*), of India, and B. goniomphalus, Mor., of Siam. 
5. Fairsankia? (an Birnynta?) TuRRITA, Sp. nov. 
Testa subperforata, turrita, solidula, fulva, glabra, nitidula. Spira 
elongato-conica, sutura impressa. Anfr. 7, convewi, ultimus antice 
subascendens, subtus rotundatus. Apertura ovata, postice vix 
angulata, varice externo mediocri instructa; peristoma undique 
expansiusculum, marginibus callo junctis, externo leviter arcuato, 
columellari obliquo, antice cum basali subangulatim juncto. Operc.? 
Long. 63, diam. 3 mm.; aperture long. 23, lat. 1? mm. 
Hab. ad Kyoukpong (in flumine Iravadi?). 
This looks like an estuary shell. In the absence of the operculum 
its position is doubtful; but if not allied to Fairbankia bombayana, 
W. Blanf., it may perhaps be a Bithynia, near B. nassa, Theobald. 
6. CycLOPHORUS SUBLEVIGATUS, Sp. Nov. 
Testa aperte umbilicata, depresso-turbinata, solida, sublevigata, ob- 
lique striatula, in anfractibus superioribus et nonnunquam sed 
rare in ultimo lineis impressis confertis spiralibus decussata, 
* I believe this common Indian shell is undescribed by Benson; at least I 
can find no description of it. It has been referred to by name in Benson’s 
papers; and I regret Von Frauenfeld’s selecting such a name as ceranospatana 
by which to describe it. 
