118 ZONITID.i;. 



b'. iSubglobosehf de^^'essed. 



a"'. Si)iooth. 



[184. Macrochlamys salwinensis, Gudtcin-Ausfen, Mul.Tnd. n,VM7, 

 p. 163, pi. 109, tig. 9. 



Lomlity. 8alwiii Valley. 



Shell globosely conoid, scarcely perforate, quite smooth ; colour 

 ochraceous ; spire moderately high, apex rounded ; whorls 5, 

 regularly increasing, somewhat convex; aperture oblique, semi- 

 ovate ; coluniellar margin vertical ; peristome slightly reflected. 



yize : raaj. diam. 6*7, min. 5*8; alt, axis 3*5, body-whorl 

 i2'8 mm. 



Tins shell was sent by Mr. IVevill to me as No. 142, p. 36, of his 

 'Hand-list,' JVavina {Microcystw) antsm, Bs., from the Salweeu. 

 It agrees very well with the figure in the Conch. Indica (pi. 90, 

 iigs. 2, 3), which was possibly a typical specimen, as it is recorded 

 on p. 37 as from Phiethan, Tenasserim, and should now be found 

 in the McAndrew Collection at Cambridge, among Benson's shells.] 



185. Macrochlamys ? dugasti, Moreld, Jour. Conch. 1891, pp. 25, 239, 

 pi. 5, figs. 1, Ir/ ; Blf. Proc. Mai. Soc. v, 1903, p. 275. 

 Helix cycloidea, a2nid H. Sf T. C. I. 1878, pi. 88, figs. 8, 9 ; Nevill, 

 Nanina (Microcystis), Hand-l. i, p. 36 (1878) ; Theob. (Macro- 

 clilamys) Cat. 1876, p. 18 ; Kobelt f Maciochlamys), Mart. ^ 

 Chemn. Syst. Conch.-Cah. 1901, p. 1040, pi. 2(i5, tigs. 10, 11 : nee 

 Nanina cycloidea, Alters, 3Ial. Bl. iv, 1857, p. 89, pi. 1, tigs. 1-3. 



Shell perforate, subglobosely depressed, deep, thin, horny, 

 isabelline, often paler beneath, polished, without longitiidinal 

 (spiral) sculpture : spire low, conoidal, suture impressed; whorls 

 6-8. closely wound, convex above, the last but little broader, 

 much rounded at tiie periphery, not tumid beneath; aperture 



Fig. 48. — Maerochlamys dugasii. 



oblique, sometimes descending slightly, broadly lunate, much 

 broader than high ; peristome blunt, a\ hitish, basal margin slightly 

 arcuate, columellar obliquely curved, not vertical, brought forward 

 and slightly reflected at the perforation. 



[Only a part of the animal has been seen by me in a dried-up 

 specimen, on soaking it out. The foot is divided longitudinally 

 into three areas ; there were the usual peripodial fringe and 

 grooves, and a short overhanging lobe above the mucous pore. 

 The jaw is curved slightly, but has no median projection on the 

 cutting-edge. The teeth of the radula are arranged in row? 



