414 Journal of the Asiatic Society of Bengal, {N.S., XIX, 
his figures of formosensis (op. cit., Plate LXXVII, Figs. 6, 7) 
represent hae compacta. I have both series of specimens 
ore me. The specimens from Formosa have the operculum 
of a Vivipara ot those fom Bhamo that of a Lecythoconcha. 
Type-specimen. M223*%5, Z.8.1. (dnd. Mus.). 
de. lecythoconcha f. crassior differs from all phases of the 
forma typica of the species in its thicker shell and less project- 
ing mouth. It is probably the form figured erroneously by 
Heude as P. lecythoides Benson. If so, its range extends from 
Chusan and Hainan to Western Yunnan and Bhamo in U pper 
Burma. 
Lecythoconcha lecythoides (Benson). 
(Plate 17, Fig. 8.) 
ne Paludina lecythoides, Benson, Ann. Mag. Nat. Hist., IX, 
1855. Pal 0 lecythoides, Benson, Journ. Asiat. Soc., muna ey. 
, 175, Plate XX XIX, Fig 
8 species is not identical with the Paludina chinensis, 
pees Ne figured in Griffith’s Animal Kingdom (Vol. XII. 
Plate i, Fig. 5: 1834), but differs considerably in outline, in 
colour, in the shape and inclination of the mouth and probably 
in the structure of the protoconch which, however, is not 
shown in the figure cited. This figure, on the other hand, 
agrees very closely with that published by Heude of his 
P. diminuta (op. cit., Plate XX XIX, Fig. 9) and appears to repre- 
_ sent a form closely allied to the same authors P. catayensts. 
There are three s ecimens in the Indian Museum from 
Cantor’s collection labelled ‘ Paludina lecythoides, Chusan 
Type” by Benson. One is large but broken and abnormal 
both in colouration (in its Abad dark spiral bands) and in 
the form of the whorls. The other two are considerably 
smaller and of a bright olivaceous green shade with longitudi- 
nal dark streaks. One, which I select as lectotype, has a 
height of 43°5 mm., with a maximum transverse diameter of 
335 mm. The mouth of the shell is 23:5 mm. in maximum 
p- 
1890. Palutina fluminalis, longispira, ventricosa, Heude, op. ctt., 
pp- s. 3-4, 5. 
form a very distinct little conical projection. tt has not the 
roughened surface of the protoconch of L. malleata nor the 
apical concavity of that of L lecythis. 
Shells from Erh-hai and from a sw: ampy lake north of 
Ho-ching are much larger than the lectotype, from Chusan but 
otherwise similar. They exhibit considerable individual vari- 
abilitv, however, and some approach Heude’s ?. con 
" bieh mney perhaps be regarded as a distinct form, others 
P. ventricosa, while the majority are nearest his P. fisninolie: 
Tt ee iil g eee “te iii Sipps 
al 
