From his stay at Port Dickson on the Malay Peninsula at the beginning of 1946 Major Dr. L. D. Brongersma of the N I C A Detachment brought home several species of crabs. A list of this material which is now incorporated in the collections of the Museum of Natural History at Leiden is given below, while on some of the more interesting species some remarks are made. Coenobita cavipes Stimps. — 26 specimens. Clibanarius padavensis De Man. — 1 specimen. Clibanarius infraspinatus Hilg. — 1 specimen. Petrolisthes speciosus (Dana). — 1 ♀. Camposcia retusa Latr. — 2 ♂♂, 1 ♀. Schizophrys aspera (H. M. Edw.). — 1 ♂. Neptunus pelagicus L. — 12 specimens, including 4 ♂♂, 2 ♀♀. Charybdis (Charybdis) helleri (A. M. Edw.). — 1 ♂. Charybdis (Charybdis) anisodon (De Haan). — 1 ♂. Thalamita crenata Latr. — 2 ♂♂, 1 ovigerous ♀. Thalamita stimpsoni A. M. Edw. — 1 ♂, 1 ♀, both young specimens. Chlorodopsis pilumnoides (White). — 1 juv. and a young Xanthid probably belonging here. Ozius guttatus H. M. Edw. — 1 ♀. Pilumnus vespertilio (Fabr.). — 2 ♂♂, 3 ♀♀. Pilumnus scabriusculus Ad. & White. — 2 ♂♂. Pinnotheres borradailei Nob. — 1 ♀. Ocypoda ceratophthalma (Pall.) — Many specimens. Uca annulipes Latr. — 2 ♂♂.