DlPLO>iMATIXA. 325 



spire, sides ratliev llalteued, apex iicumiiiate ; whorls 7, sides 

 convex, tlie antepenultimate the broadest, the constriction usually 

 immediately above the aperture, but in some inclining more to the 

 outer margin ; aperture circular, suboblique ; peristome closely 

 double ; columellar nuirgin straight, only a slight indication ot" 

 the usual tooth, but the thread or twist of the columella is visible 

 within the aperl ure. 



"Alt. axis 4--'i imn."" 



Hah. Nicobars : Katchall (iiJof^w^y/;/"). 



"The absence ot" the usual columellar tooth is a conspicuous 

 diiTerence ; it is the first s|)ecies described from these islands." 

 {^Godwin- Austen.) 



In 1895 the following note was added : — 



"This species is No. J :} of Mr. Gr. Nevill's 'Amended Hand 

 List ' (p. 1!84) = roepstorffiaiia, Nevill MIS., from Katchall {de li.). 



" This species in Mr. de Roepstorff's collection bears the name 

 of D. carneola, Stol., = hattemalvensis, Nevill. In Nevill's 

 'Amended Hand List' i find the title roepstorffkma entered and 

 the typical locality Katchall, with 3 specimens from Camorta and 

 20 from Battemalve, collected by Ferd. 8toliczka. It is somewhat 

 similar to D. camcola from Moulmain, but it is more elongate aud 

 the costulatiou much closer and finer."' (Godwin-Austen.) 



Var. hattemalvensis, Godwin-Austen. 



Diploiinnafina carrcola, var. (^ distinct speciesj, Nevill, Hand List, 

 i, \87f<, p. 284 (part). 



UijiloniniafiiKi nicoharica, var. battenialven-sis (Nevill MS.), Godwin- 

 Austen, I'roc. Zool. Soc. ISOo, p. 454 ; id., Land &i'Veshw. Moll. 

 India, ii, LS1J7, p. 16. 



I)ipln)]imf(tin(i {EudipJommatina) nicobarica, var. battemalvensisy 

 Kiibelt vS: MiillendorH", Nachr. Deuts. Malak. Ges. xxx, 1898, 

 ]). 137 ; id., Cat. I'neum. 1899, p. 57. 



" I have discovered among some shells put up by Mr. G. Nevill 

 two specimens in a tube, labelled as above, from the island of 

 Batte Malve ; they agree in all characters with the last species 

 [aicobarica\ but are much larger and more tumid, the antepenul- 

 timate whorl being much larger than in nicobarica. 



" Major diam. 1-3; alt. axis 3; body-whorl 0*9 mm." {Godwin- 

 Aasten.) 



Hah. Nicobars : Batte Malve (Stuliczl-a). 



498. Diplommatina oligopleiiris, Blanford. 



Diphmmatina oUiioplcuris, Blauford, .1. A. S. B. xxxvii, 186S, 

 p. 82, pi. 3, fijjs. 4 -4 r ; Theobald & Stoliczka, op. cit. xli, part 2, 

 1871, p. 330 (Z). olip/oplei(ris) ; Hanlev & Theobald, Coucli. Ind. 

 1875, pi. 119, fijrs. 2, 3: rfeiller, Mon. Pneum. Suppl. 3, 1875, 

 p. 74; Theobald, Cat. Shells Hiit. India, 1876, p. 42; Nevill, 

 Hand List, i, 1878, p. 285 (-f var.); Godwin-Ansten, Land & 

 i'reshw. Moll. India, i, 188(3, pf. 50, tig. 1 (animal). 



