Fic. 
1-2 PIRENA Lamarei nov. sp. . 
3-4 MELANIA Labuanensis nov. sp. 
5 
6 
7-8 
9 
10 
ls 
12 
13-14 
15 
16 
MELANIA 
chrysalis nov. sp. 
herbacea nov. sp. 
subspinulosa nov. sp. 
angulifera nov. sp. 
ciliata nov. sp. RE 
turris nov. Sp. : 
lepida nov. sp. 
Zeleborii nov. sp. 
Chenui nov. sp. . . 
radix nov. Sp. 
» 
PAGE 52. 
41. 
80. 
41. 
48. 
32. 
46. 
38. 
40. 
35. 
37. 
31. 
SET 
