118 LAND AND FRESHWATER 
central projection ; the odontophore (fig. 2 6) differs materially from 
M. atricolor and M. indica. 
38 1 Biw 12 Mind ncBieas 
2) di er b2 
The central tooth is tricuspid, of usual form; the median teeth 
are bicuspid, the smallest cusp being situated on the outer lower 
margin, the inner (conspicuous in the above species) being absent ; 
the laterals are bicuspid, with points rising equally. 
Here we are presented with a form which outwardly cannot be 
distinguished from its close neighbour 1, atricolor, but in its anatomy 
presenting considerable divergence both in generative organs and 
dentition, really quite marvellous are the modifications which are 
presented in this group of shells. So many combinations of the 
various characters are found as we look more closely into the different 
species, that these are better shown in a tabular form, which I am 
preparing. 
MAcROCHLAMYS CACHARICA, Var. GLAuCA. (Plate XXIV. fig. 6.) 
Locality. Harmutti, base of Dafla Hills, Assam. 
Shell perforate, depressedly conoid, base flat; sculpture, very 
smooth surface, no striation seen ; colour very pale greenish ochre ; 
spire low ; whorls 5; aperture subvertical ; umbilicus rather open. 
Size: maj. diam. 22°8, min. 19°8; alt. axis 8-0, body-whorl 7-8 mm. 
0-87, a 76; * 0:32, ae 0°31 inch. 
The shells from the above locality are rather more tumid than tke 
typical specimens from the Cachar side. 
Macrocuiamys? nusrica. (Plate XXIV. fig. 7.) 
Helix lubrica, Benson, A. M. N. H. vol. x. p. 349 (Nov. 1852); 
Pfr. Mon. Hel. vol. iv. p. 44; Reeve, Con. Icon. pl. clxxi. fig. 1153; 
Conch. Ind. p. 24, pl. li. figs. 8, 9. 
Nanina lubrica, Gray, Cat. Pulm. B. M. p. 42; H. & A. Adams, 
Gen. ii. p. 223. 
Macrochlamys (sec. A) lubrica, Theob. Cat. Supp. p. 18. 
Nanina (Macrochlamys ?) lubrica, Nev. Hand-list, p. 22. 
Nanina (Xesta) lubrica, Pfr. Malak, Blatt. 1855, p. 120. 
Locality. Darjiling, N.E. Himalaya. 
Sculpture none, a perfectly smooth surface ; colour very rich ochre- 
brown. 
Size: maj. diam. 26°7, min, 22:3; alt. axis 10-0, body-whorl 8-5 mm. 
33 del 45 6 OOS ay DaGeaO; 5 0-34 inch. 
Original description :—** Testa perforata, depressa, obsolete radiato- 
striata, politissima, luteo-fulvescente vel olivacea ; spira planiuscula, 
apie vie prominulo, obtuso, sutura leviter subcanaliculata. Anfractibus 
5, ultimo rotundato, basi convexo ; apertura late lunart, vie obliqua, 
peristomate acuto, intus interdum subremote albido-labiato, margine 
