~~“ 
on 
BLANFORD :. LAND AND FRESH-WATER MOLLUSCA FROM SIAM. 2 
GASTEROPODA. 
Family TESTACELLIDA. 
1. Srrepraxis porrecrus, Pfr., var. Lampun. 
This is of about the same size as typical S. porrectus, and is principally 
distinguished by having a small tooth inside the right margin of the 
aperture, opposite the crest of the parietal lamella. One specimen, 
greatly distorted through an injury to the shell when half grown, 
is noted as “ Found under plantain-trees generally.” 
Two other species of Streptavis (one example of each), which T have 
not succeeded in identifying, were sent without definite locality. 
Family LIMACIDA. 
2. Cryprosoma pRmstans (Gould). No precise locality. 
This agrees better with C. prestans than with C. Siamense, Haines. 
The former is widely distributed in Burma, from the neighbourhood 
of Bhamo to Tavoy. 
[‘‘ Found during the rains only, in July and August, in very damp 
forest. These shells have a very gummy substance, which it is difficult 
to get off when handled.”—W. M. D. | 
3. Macrocuiamys pumicata (Morelet). Ser. Conch., iv (1875), p. 248, 
pl. xu, fig. 2. 
A single specimen was sent, which, although very close to Morelet’s 
species, is perhaps not absolutely identical. Numerous additional 
shells have been received by Mr. Preston. 
‘“Common in evergreen forest. Never found in open or dry 
forest.”—W. M. D. | 
4. MacrocutamMys mozecuta, Bens. Lampun. 
Several specimens of this small species were sent, and they show 
passage from a form nearly resembling the type from Rangoon into 
a turbinate variety with a more raised spire. A specimen of the 
former with a major diameter of 5mm. is 83mm. high; one of the latter 
measures 5 4mm. in diameter by 3°7 mm. in height. 
Specimens from Moulmein and the Khasi Hills were identified by 
Nevill (Handl., i, p. 38) with the original form from Rangoon. It is 
not, therefore, surprising that this species should be found in Siam also. 
5. Macrocatamys Dueasti, Morlet. Journ. de Conch., 1891, pp. 25 
239, pl. v, figs. 1, la. Lampun and Pitsunaloke. 
This is evidently a very common form in the upper Menam valley. 
It is a singularly globose shell, more so than any of its allies with 
which I am acquainted; and owing to the fact that in the figures above 
quoted, although views of the upper and lower surface are given, none 
is furnished showing the most characteristic aspect, it is by no means 
easy to identify the species. Moreover, the shell is described as supra 
vix convexa, the last whorl is said to be infra subplanatus, and the 
peristome is characterized by lubro superne ad insertionem anfractus 
penultimi incisura discreto, none of which particulars (the last character 
