DIPLOMMATINA. 123 
distineto. —  Operc. normale. — Long. 2, diam. vix 1 mill. 
Ap. ?/4 mill. longa. (Coll. Nr. 84.) 5 
Carychium costulatum Hutton mss. teste Bens. 
— parvulum Doys mss. in Mus. Brit. 
Diplommatina costulata  Bens. in Ann. and Mag. 1849, Sept. p. 194. 
— — Pfr. Consp N. 180. 
— — ... .Chemn, ed. IL. t. 48. f. 34. 35. 
-— costulatum Gray Catal. Cycloph. p. 55. N. 2. 
Habitat in montibus sub - Himalayanis occidentalibus (Bens.), 
Landour (Boys). 
4. B». EKuttoni fr. 213 
T. simistrorsa, rimata, ovato-conica, tenuis, minutissime 
costulato-striata, sericea, fulvescenti-albida; spira subturrita, 
apice acuta; anfr. 5'/, convexi, ultimus angustior; apertura 
subobliqua, depresso-subcircularis; perist. subcontüinuum, du- 
plicatum: internum brevissimum, margine columellari obsolete 
calloso-dentato, externo breviter expanso. — Long. 2'/,, diam. 
medio 1 mill. Ap. vix ?/, mill. longa. (Coll. Nr. 85.) 
Diplommatina  Huttoni Pfr. in Proc. Zool. Soc. 1851. 
ETE UBSD- NCPBST. 
— — . Chemn. ed. YI. t. 48. f. 36, 37. 
Habitat Muporee Indiae. 
IX.  Megalomastoma Guilding. 
Opereulum subcirculare," tenue, corneum, arctispirum, 
planiusculum. Testa anguste vel vix perforata, oblongo-tur- 
rita vel pupaeformis; apertura subcircularis, interdum canali 
levi laterali instructa; peristoma vel duplicatum, expansum vel 
incrassatum, rarius rectum, simpliciter incrassatum. 
Megalomastoma Guild, in Swains. Malae. p. 186. 336.*) 
-— Pfr. in Zeitschr. f. Mal. 1847, p. 109. 1851. p. 148. 
Consp. p. 20. 
*) .Cylindrical, resembling Pupa, but has a horny operculum; spire 
not thiekened ; teeth or fold on the pillar none.* Typi: C. flavula Lam, et 
M. brunneum Guild, (Swains p. 336.) 
