PILA. 97 



188. Pila globosa (Swainsoii). 



Pila globosa (Swainson), Zool. Illust. ser. 1, ii, pi. 119 ; Philippi, 

 Monogr. Ampul. (Krister's ed. Chemn). p. 8, pi. 1, fig. 3 ; Reeve, 

 Con. Icon., Ampul, figs. 46, 47 ; H. & T., 0. 1. pi. 113, fig. 3. 



Original description : Shell globose, very smooth, olive ; spire 

 depressed ; margin of the aperture thick, fulvous, grooved ; 

 umbilicus small, contracted, placed near the base; operculum 

 shelly. 



Alt. 55-5, diam. 56-5 mm. (measurements of Swainson's figure). 



Hob. Calcutta ; Rohilkund ; Orissa, etc. (Conch. Ind.). 



Yar. sphjerica (Hanley $ Theobald), Conch. Ind. pi. 113, fig. 4. 



Figured, but without description ; the figure shows a much 

 larger shell than the typical form, it is of a greenish-olive tint and 

 painted with several narrow bands of a reddish hue, with an 

 obliquely-set aperture. 



Alt. 64*5, diam. 65 mm. 



Nab. Moradabad. 



Var. fasciata (Hanley $ Theobald), torn. cit. fig. 5. 



Also figured, but without description ; the figure in this instance 

 shows a more numerously banded form with a rather less oblique 

 aperture. 



Alt. 63-5, diam. 62 mm. (measurements of fig. in Conch. Ind.). 



Hub. Moradabad. 



Nevill in his 'Hand List' quotes a number of varieties as 

 follows : 



Var. sinistrorsa (Nevill), Hand List, pt. 2, 1884, p. 2. 

 Hob. Calcutta. 



Var. incrassatula (Nevill), Cat. Moll. Fasc. E, 1877, p. 4 ; Hand 

 List, pt. 2, p. 2. 



A small variety " distinguished by its greater relative thickness, 

 by its (in living specimens) pure white peristome, slightly more 

 exserted spire, absence of coloured bands, and by the unusually 

 small umbilicus." 



Alt. 32, diam. 28'5 ram. 



Hab. Calcutta (Nevill) ; Dum-Dum (Wilmer). 



Var. minor (Nevill), Cat. Moll. Ease. E, 1877, p. 4 ; Hand List, 

 pt. 2, p. 2. 



A small variety with spire and aperture at base more produced 

 than in the typical form ; the columellar margin is widely ex 

 panded and stained of a rich dark chestnut-brown, the interior of 

 the aperture being similarly coloured ; it is of a thinner and more 

 delicate texture than the var. incrassatula. 



Alt. 36, diam. 3O5 mm. 



Hab. Dum-Dum, near Calcutta ( Wilmer) ; Siliguri (Mainwaring). 



H 



