/lIAC-TiUS. -i5 



Orijlnidde-'icripUon :— "Testa miibilicata, depresse subdiscoidea, 

 rubeute cornea, transversim striata, juxta suturain striis fortiori- 

 bus sive costiilis tiliformibus coufertissimis oriiata ; apice glabro, 

 rufesceiite, elevatiusculo : aafraetibus quatuor, couvexis ; tiibulo 

 suturali niodico, quartam periplieriiB vix aequante ; strictura brevi, 

 Iffivigata, striis noiinuUis costiforniibus ad basiu et costa crassa 

 transversa notata. Apertura parum obliqua, subrotundata, i'ere 

 soluta, labro externe modice expanso, lauiellose undulata, ad 

 marginein paiilo incrassato, 5-inciso, lamella supera maxime 

 producta ; labio siniplici, paulo arcuato, supra vix adnato ; 

 operculo coraeo, niargiue elevato uucleoque central! parum 

 excavato. 



"Diam. :naj. -21 [oSo nnu.J, diam. min. -20 [5 mm.], alt. -21 

 unc. [o'2.3 mm.]." 



Hab. Burma : Shan States. 



" This is a remarkably line species witli the creuulated lip of 

 A. plectocheilus mucii exaggerated." {Theobald.) 



363. Alycaeus daflaeiisis, God ana- Austen. 



AlyccCHfi datiacnsis, Godwin-Austeu, J. A. S. li. xlv, part i', 1876, 

 p. 176, pi. 7, li-s. 12, Ua, 12 6; XeviU, Hand List, i, 1878, 

 p. 291 ; Godwin-Austen, Land & Freshw. Moll. India, n, 1914, 

 p. a.54, pi. 1 45, liov.. 11, n «, 1 1 6. 



Alycaeus {Bicharax) dajiaensis, Kobelt, Das Tierreich, Lief. 16, 

 1902, p. 368. 



Ortgincd description :— " Shell turbinate, moderately umbilieated, 

 pale whitisli or dull ochreous according to the state of the 

 epidermis, linely ribbed throughout, ratlier more coarsely near the 

 commeiu-enient Of the swell of the last whorl, on this portion the 

 ribbing is very line and close. Spire conoid, apex blunt, suture 

 impressed, the" sutural tube moderate. WIkh-Is 4, tlie last swollen, 

 then constricted, and enlarging again into a well-raised ridge, 

 which terminates below on margin of the peristome, it then 

 descends and expands considerably with four deep longitudiual 

 phcations. Peristome single (no sign of the usual outer margin), 

 continuous, with five plications on the outer margin, the lower 

 margin recurved. Aperture oblique. Operculum mtdtispiral, 

 horny, with a large disc-like boss in the centre front side.'' 



Hub. India: Toruputu Peak, 7000 ft,, and Xiosi Kidge, 

 Daila Hills. 



"The nearest form to the above is A. dicjiiatus, H. Blf,, 

 described and figured in J. A. S. B. vol. xl, 1871, from Darjeeling, 

 but the duplicate peristome in that shell is conspicuous, and forms 

 a well-detiued sharp edge where the expansion and plication of 

 the inner lip commences. By the operculum alone it can be at 

 once distinguished, and it is besides a much smaller shell. 



"A dwarf variety occurs on Shengorh Peak, only 0-09 [2-25 mm.] 

 in. alt., not so expanded near the aperture, and with the plication 

 less developed. On the Tanir Eidge, at 4000 feet, the same 



