RIJKS MUSEUM VAN NATUURLIJKE HISTORIE — LEIDEN. 2! 



DOCOGLOSSA. 



Fam. Acmaeidae. 



A c m a e a Eschscholtz. 



1. Acmaea sp. 



Kajo-bay, under stones between high- and low- watermark. 



Many young specimens seem to belong to the same species as a larger 

 one, which is however not quite adult; it much resembles A. striata 

 Q. & Gr., but differs slightly in colour-markings. 



Pelecypoda. 



Fam. Aviculidae. 



M el e a g r i n a Lamarck. 



1. Meleagrina margaritifera Linné. 



Liane. Syst. Nat. Ed. X, p. 704. 



Faté-river, near the mouth. 

 The specimens are very young. 



EXPLANATION OF PLATE I. 



Fig. 1. Macrochlamys imperforata n. sp. 



» 2. Sitala crenocarinata n. sp. 



» 3. Euplecta costellifera n. sp.; the ribs of ligures b and c slightly too close. 



» 4. » imperforata n. sp. 



» 5. Planispira planissima n. sp. 



» 6. Melania subcostellaris ji. sp. 



» 7. » sentaniensis n. sp.; a, largest specimen; b, specimen of average size. 



» 8. » kampeni n. sp. ; two specimens to show slight differences. 



» 9. Cyclotus subcanaliculatus n. sp. 



