58 Contributions to Indian Malacology , [No. 1, 



any other, and such naturalists as may refuse generic rank to Iravadia, 

 may perhaps best class it as a subgenus or section of that genus. It 

 may have affinities with a curious species from Peru (Rissoina sulci- 

 fera, Trosc.) figured by Schwarz von Mohrenstern in his monograph of 

 Rissoina in the Denksch. k. k. Akad. Wien, xix, 182, Taf. 10, fig. 83, 

 and the differences between which and all other Rissoince are pointed 

 out by that author. 



The curious little shell dredged by Mr. A. Adams in the seas of 

 Japan and described by him as Vanesia sulcatina in the Annals and 

 Magazine of Natural History for 1861, Ser. 3, vol. viii, p. 242, may 

 also possibly have some affinities with Iravadia. 



No. 14, Stenothyra monilifera, Bens. PI. II, fig. 15. 



I found two specimens of this species at Port Dalhousie in the 

 Bassein river. The type was first obtained by Mr. Theobald at Mer- 

 gui and Rangoon, and the shell has since been found in Cochin China. 

 As the species does not appear to have been figured, I add an illustra- 

 tion of it. 



Family NERITINIDiE. 



No. 15, Neritina Peguensis, n. sp. PI. I. fig. 1 — 16. 



Testa globosa, oblique ovalis, solida, confertim oblique subsinuate 

 rugata, interdum spinigera, - epidermide fusco-olivaced, minute flavo- 

 punctulatd, aliquando maculis oblongis subcurvatis flavis infra sutu- 

 ram ornatd, vel fasciis subobsoletis spiralibus circumdatd, indiUa, sub 

 epidermide ccerulea vel rubella, albido-macxdata. Spira vix exserta, 

 plerumque erosa, sutura elevato-compressa. Anfr. circa 3, superi pla- 

 nulato-concavi } ultimus superne ad suturam appressus, supra peripheri- 

 am aut carinatus, spinisque distantibus munitus, vel obsolete angulatus, 

 subtus rotundatus. Apertura intus lactea ; peristoma semiovale, area 

 columellari planulatd, luteold v. sordide albidd, minute denticulatd, 

 plied unicd majori intrante supramediand munitd, antice edentatd. 

 Operc. extus planum, albidtim, margine externa nigra, intus rubrum. 



Maj. diam. 19, min. 15, alt. 19 mill. Hab. in rivulo ad Promon- 

 torium Negrais. 



Var. minor testa magis rotundatd, spinis omnino carcntibus 7 fig. 

 13 — 16. Maj. diam. 14, min. 11, alt. 15 mill. 

 Hab. ad Portum Dalhousie. 



