248 LAND AND FRESHWATER 
The formula is 
WWrrQee Ss AL WORT 
or 
ot Cie bene es 
Jaw with central projection. é 
Oxytrs (Bensonra) Monticota, Hutton. 
Nanina monticola, Hutt. & Bens. J. A. 8. B. vol. vii. (1838), 
p. 215 (Mahasu, Hutton). 
Helix labiata, Ptr, P.Z.8. 1845, p. 65 (locality unknown, ex 
mus. Cuming) ; Pfr. Monogr. Helic. Viveut. vol. i. p. 73 (Landour, 
Hutto). 
Helix monticola, Pfr. Monogr. Helic. Vivent. vol. i. p. 180 (Mahasu, 
Hlutton ; Landour, Benson). 
Hemiplecta labiata, Pfr. ; Albers, Die Heliceen, 1850, p. 61. 
Xesta lubiata, Pfr. ; Albers, Die Heliceen, 1861, p. 51. 
Orobia monticola, Hutton ; Albers, Die Heliceen, 1861, p. 58. 
Helix monticola, Hutton ; Han. & Theob. Conch. Ind. p. 25, pl. lii. 
f. 3 (Huttu and Mahasu) *. 
Helix labiata, Pfr.; Han. & Theob. Conch. Ind. p. 18, pl. xxvii. f. 5, 
good figure (Landour). 
Hemiplecta monticola, Hutton, sec. C,=labiata, Pfr. Theob. Cat. 
Supp. p. 22. 
Hemiplecta monticola, Theob. J. A. 8. B. 1878, p. 142. 
Nanina (Bensonia) monticola, Hutton, =labiata, Pfr. Ney. Hand- 
list, p. 49. 
Bensonia labiata, Pfr. Nomen. Helic. Vivent. p. 41. 
Bensonia monticola, Hutton ; Pir. Nomen. Helic. Vivent. p. 42. 
Mussoorie, N.W. Himalaya. 
The first record of a shell of this subgenus is in a paper by 
Hutton and Benson, published in 1838 on the land and freshwater 
shells of the Himalaya, named Nanina monticola, Hutton. 
Original description :—‘ Tvsta subdiscoidea, pallide vel saturate 
brunnea, eprdermide radiatim et concentrice rugosula ; spira depresso- 
conoidea, apice obtusata; peripheria minime angulata, suturis laviter 
impressis, apertura transversa, lunata, labro costa interni submar- 
gai albida minuto. Diam. 1-75 inch. (B.) 
“Umbilicus as in the genus. The shell has a moderate polish, 
and is sufficiently distinguished from vitrinoides on the one hand, 
and from decussata on the other, by the radiating wrinkles inter- 
rupted by concentrically disposed, depressed lines, which give the 
surface of the shell a rough aspect, very different from the decussated 
surface of decussata. ... The larger specimens of N. monticola 
attain a considerable thickness, and there are visible three or four 
internal varices at various distances, occasioned by the ribs at the 
apertures of former growths. 
* Ts a good figure of the Mussoorie form, I think Hanley has transposed 
the localities of the shells he figured on pls. xxvii. and lii. (vide G. Nevill, Moll. 
Yark. Exped. p. 17). 
