354 ACHATINID.E. 



" Alt. 0-41 inch [ = 10-5 mm.], diam. 0-20 [ = 5 mm.], apert. 

 diam. 0-12 [=3 mm.], alt. 0-23 [=6 mm.]. 



*' Animal with a short foot, pointed behind, pale yellow tint ; 

 eye-tentacles dark to the base, lower very short." (Godwin- 

 Austen.} 



Hob. India : Khasi, Oaintia, and Naga Hills (Godwin- Austen) ; 

 Dikrang Valley, Dana Hills, 2500 ft. (Godwin- Austen) ; Naga 

 Hills (Roberts) ; Darjeeling, Sikkirn (Stoliczka). 



" It appears to be very close to Bui. putus, Bens., from Tavoy. 

 Specimens differ very much in size from different collections. 

 The shell is very finely developed in the high parts of the North 

 Cachar Hills at 6000-7000 feet (fig. 7). At Cherra Poonjee it 

 assumes a more 'tumid form (fig. 7 a), and it is very frequently 

 dwarfed to the length of only 0'36 inch [ = 9 mm.], especially in 

 its lower habitats; but these variations are not of sufficient 

 specific importance." (Godwin- Austen.) 



Jousseauine expressed the opinion * that C. khasianus and 

 G. munipurensis are identical in form. A glance at the figures 

 will convince anyone that this suggestion is not borne out by 

 facts. 



The British Museum possesses four specimens from the Khasi 

 Hills, measuring 12x5*5 mm. 



Genus OPEAS, Albers. 



Opeas, Albers, Die Heliceen, 1850, p. 175 (as subgenus of Uttlimus), 

 first species Bulimus subula, Pfeiffer ; Martens, Die Heliceen, 

 ed. 2, 1860, p. 265 (as subgenus of Stenoyym}, type Helix 

 goodalii, Miller ; Crosse & Fischer, Miss. Scient. Mexique, Moll, 

 i, 1877, p. 592 ; Pilsbry, Man. Conch, ser. 2, xviii, 1906, p. 122. 



TYPE, Bulimus suoula, Pfeiffer. 



Range. Throughout tropical and subtropical regions, except 

 Australia. 



" Shell small, thin, turrite, usually perforate, with large, obtuse, 

 rounded apex and convex or flattened whorls, corneous or 

 yellowish. Embryonic whorls smooth. Aperture small, ovate, 

 the outer lip thin, usually arched forward, eolumella straight or 

 concave, not sinuous, the columellar lip reflexed, curving into the 

 basal lip and not toothed or truncate below. Oviparous, the 

 egg-capsules large and spheroidal. 



" Opeas contains small, thin, oviparous stenogyriiie snails with 

 the apex large, obtuse, rounded and smooth, and the columellar 

 margin reflexed, rounded below, or at least not distinctly truncate. 

 The species are spread throughout tropical and subtropical 

 regions, but as yet none is known from Australia. A few species 

 colonize freely, and have spread wherever commerce reaches in 

 suitable climates. Others, restricted to special stations not to be 



* Bull. Soc. Zool. France, x, 1885, p. xxii. 



