118 ZONITID^E. 



b'. 



a'". Smooth. 



[184. Macrochlamys salwinensis, Godwin-Austen, Mot. 2nd. ii, 1907, 

 p. 163, pi. 109, fig. 9. 



Locality. Salwin Y alley. 



Shell globosely conoid, scarcely perforate, quite smooth ; colour 

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

 regularly increasing, somewhat convex; aperture oblique, semi- 

 ovate ; columellar margin vertical ; peristome slightly reflected. 



Size : maj. diam. 6-7, min. 5*8 ; alt. axis 3'5, body-whorl 

 2-8 mm. 



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

 ' Hand-list/ Nanina (Microcysti) causia, Bs., from the Salween. 

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

 figs. 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 Me An drew Collection at Cambridge, among Benson's shells.] 



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



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

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

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



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

 isabelline, often paler beneath, polished, without longitudinal 

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

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

 much rounded at the periphery, not tumid beneath; aperture 



Fig. 48. Macrochlamys dugasti. 



oblique, sometimes descending slightly, broadly lunate, much 

 broader than high ; peristome blunt, whitish, 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 ratlula are arranged in rows 



