588 Journal of the Asiatic Society of Bengal. [N.S., XVIII, 
species. One is a specimen of cinerea, a variety of P. layardi 
and not P. globosa ; while the other is a half-grown shell of the 
other Ceylonese species—P. doliodes. Another shell received 
from the same source as ‘* Pila tischbeini, Dohrn ”’ belongs to 
the variety cinerea. A specimen, which Sowerby sent as the 
cotype of his new Ceylonese species—P. alucinans—is the most 
interesting of the lot. It is a young shell of a uniform dark- 
brownish colour, without any colour bands, as are present in 
Sowerby’s type-shell. The umbilicus is more perforate, and is 
border. The mouth of the shell has quite a different shape. 
and the shell is thick with distinct vertical striae. This speci- 
men, except for being of about the same size as Sowerby’s type 
of P. alucinans, has nothing in common with it. It is only a 
young specimen of the Burmese and East Indian species—P. 
conica (Gray). 
Pachylabra doliodes (Reeve). 
1912. Pachylabra doliodes and P. moesta, Kobelt, op. cit., 
pp. 74, 75, Taf. xxxiv, figs. 5, 6 and 8. 
Reeve described this species from a shell in the Cuming 
Collection with the locality ‘Bombay.’ Nevill, however, 
thought the species to be Ceylonese, but Sowerby, from one o 
the three shells mounted on the type-tablet being an American 
species. was misled, and considered the species to be an 
American one, belonging to the genus Ampullaria, s. 8. The 
type-shell, which was figured by Reeve as A. doliodes, corres- 
ponds exactly with the specimens from Ceylon, which Nevill 
had assigned to this species. Reeve’s Ampullaria moesta from 
Ceylon is only based on young shells of this species, and must 
be included in the synonymy of this species. 
In Kobelt’s collection there is a young specimen of this 
species purchased from Sowerby and Fulton, London. This 
shell, as has already been noted, was received as a specimen of 
globosa var. cinerea. 
Pachylabra doliodes (Reeve) var. woodwardi (Dohrn). 
1912. Pachylabra woodwardi, Kobelt, op. cit., p. 105, Taf. 
xliii, fig. 9. 
This form is only known from Dohrn’s unique type- 
specimen in the British Museum, London. The typeis a young 
shell and greatly resembles the young shells of P. doliodes. 
I was at one time inclined to consider it as only an abnormal 
Specimen of the same species ; but owing to the very perforate 
nature of the shell, the very loose winding of the whorls and 
the much darker colouration, as also the differences in the pro- 
portionate masurements, I, for the present, propose leaving it 
as a distinct variety. 
