162 LAND AND FRESHWATER 



whorls 4|, rounded on side, flat above ; aperture broadly lunate, 

 vertical ; peristome very thin ; columellar margin scarcely thickened, 

 subvertical. 



Size: maj. diam. 7"0, min. 6"0 ; alt. axis 3"8 mm. 



This shell was sent as 167 a, as the type of perfraijilis. There 

 should be four specimens left in the Calcutta Museum : see my 

 remarks under the preceding species. 



Macrochlamys superflua, W. T. Blanford. 



Macrochlamys superflua, P. Z. S. 1904, ii. p. 442, pi. xxv. fig. 7. 



Habitat. The Teesta Valley, Sikkim. 



The figure given on Plate CIX. was made from a specimen sent 

 to me by Nevill many years ago ; with a much larger series to deal 

 with, it proves to be the young shell of a form about the size of 

 M. lubrica, to which Dr. W. T. Blanford has since given the above 

 name. 



The description of this very young shell (Plate CIX. fig. 6) is as 

 follows : — 



LocaUtt/. Darjiling (coll. Colonel Mainwaring). 



Shell subglobosely conoid, narrowly umbilicated, shiny, thin ; 

 sculpture wavy, rather broad longitudinal bands, visible under low 

 powers ; colour pale sienna-brown ; spire depressedly conoid ; 

 suture shallow, adpressed ; whorls 4|, the last rather tumid and 

 rapidly increasing ; aperture broadly lunate, oblique ; peristome 

 very thin, scarcely reflected on columellar margin. 



Size : maj. diam. 5'6, alt. axis 2*3 mm. 



On comparison of large scale drawings made with camera lucida 

 it is seen at once that the coil of superflua is closer and more 

 regular than that of M. seqiims. 



Macrochlamys spreta, W. T. Blanford. (Plate CIX, figs, 8, 8rt.) 

 Macrochlamys spreta, P. Z. S. 1904, ii. p. 445, pi. xxv. fig. 12. 



Original description : — " Testa minute et suhohtecte perforata., 

 depressa, tenuis, nitida, polita, lineis impressis spiralibus sub lente 

 undique ornata, pallide castanea, subtus circa perforationem albescens; 

 spira parum elevata, conoidalis, sutura vix impiressa ; anfr. 5, con- 

 vexi, ultimus majuscidus, ad periplwiam rotuadatus, siddus convexus; 

 apertura ohliqua, subovato-lunaris ; peristoma tenue, rectum, margine 

 columellari obUqno, Icviter reflexo. 



" Diam. maj. 8, min. 7, alt. 3-5 mm. 



" Hub. ad Thamandewa in pago Bassein et in aliis partibus 

 provincioe Pegu Burmannicae (TF. T. B.). 



" Near M. subpetasus, Nevill, and M. noxia, but easily recognised 

 by the spiral striation," 



This shell was figured from a specimen in Dr, Blanford's collection 

 named causia ; it was not, however, that species. In the last paper 

 written by Blanford (1904) it is described with some other Burmese 

 skells, which had remained unnamed for many years. 



