1872.] W. Theobald & F. Stoliczka— Notes on Barmese Land Shells. 331 



on all the whorls of the Arakanese specimen ; the difference is, however 

 not sufficient to indicate a specifically distinct shell from the one above 

 named. 



4. D. exilis, Blf., was found on the limestone hills at Damotha and at 

 the Farm-caves near Moulmein. Most of the specimens somewhat exceed 

 in size those from Upper Barma ; the costulation of the whorls also is a shade 

 finer, though variable in different specimens, and the outer lip of the aperture 

 a little more expanded ; however, the general form, character and proportion 

 of the whorls is exactly the same. One of the largest specimens measures : 

 total length 3 - 2, diameter of penult, whorl l - , diam. of apert. with perist. 09 

 m.m. ; it has nine whorls. 



5. D. nana, described by Mr. W. T. Blanford from Pegu, also occurs 

 near Moulmein. ; the specimens only are a trifle smaller than the type shell, 

 but they are very distinctly transvefsely costulated. 



6. DrPLOMMATESTA ANGTTLATA, n. Sp. PI. xi. Fig. 3. 



D. testa ovoto elongata, dextrorsa, vix rimata, sordide albida, anfractu 

 penultimo latissimo, apice obtusiusculo, pallide rubido, submammillato ; 

 anfractibus sex, primis duobus Iwvigatis, cceteris valde convexis, ad peri- 

 plieriamplus minusve distincter angulatis, transversim confertissime costellatis 

 aut acute striatis ; ultimo basi contracto ; sutm 'a profunda, simplice ; aper- 

 tura late circulars, peristomate undigue expanso, bilabiato, interna subrecto, 

 ad onarginem columellarem dente obliquo instructo, extemo ad anfractum 

 penultimum constrictiom modice ascendente. Long. 2, lat. maxima 0'8, diam. 

 apert. 6 m.m. 



Sab. Prope Moulmain, provincia 3fartaban. 



The peculiar angulation of the whorls, combined with the very close 

 transverse costulation, or almost striation, and the proportionately large 

 aperture readily separate this species from any other as yet known. Mr. 

 Theobald obtained numerous specimens on the limestone hill near Damotha, 

 and also south of Moulmain, together with D. cameola, Stol. 



7. DlPLOMMATESTA BlCHTHOFENI, n. sp. PL xi. Fig. 4. 



JDipl. testa ovate elongata, turrita, dextrorsa, albida, rimata; spira 

 conoidea ; anfractibus septem, convexis, ad medium sub angulatis, sutura 

 simplici junctis, penultimo ultimo latiore : primis duobus apicemformantibus 

 leevigatis, cceteris transversim conferte costellatis, ultimo basi convexo, angus- 

 tato, supra ad anf penultimum ascendente ; apertura parva, circular i, peris- 

 tomate duplici : interno tubuliforme modice producto atque dilatato ; labio 

 ad basin dente obliquo et mag no instructo. Long. 2*5, lat. maxima - 8, diam. 

 apertures 0'5 m.m. 



Sab. Prop e Moulmain ; {testa rarissimd) . 



