This paper presents a taxonomic revision of the representatives of genus Kanigara Distant, 1906, distributed in Thailand and the Malay Peninsula. Three species are recognised, including a new species, Kanigara nebulosa, from the Malay Peninsula, and Kanigara punctata Scudder, 1969, which is recorded from Thailand for the first time. Illustrations of the genital structures of the new species and a key to all described species are provided.

The taxonomy of Metrocoris Mayr, 1865 in Vietnam is revised. Five new species, all from the northern area of Vietnam, are described: Metrocoris sapa, new species, Metrocoris monticola, new species, Metrocoris nigriventris, new species (these three belonging to the M. compar species group), Metrocoris johnpolhemi, new species (belonging to the M. bilobatus species group), and Metrocoris sicilis, new species (belonging to the M. ciliatus species group). Two species are recorded from Vietnam for the first time: Metrocoris ciliatus den Boer, 1965 and Metrocoris obscurus Chen & Nieser, 1993. A lectotype for Metrocoris tenuicornis Esaki, 1926 is designated in the present paper. Additional descriptions of M. tenuicornis Esaki, 1926 and M. triangulatus Zettel & Chen, 1996 are also given. Keys to the 16 species of Metrocoris occurring in Vietnam are provided. In addition, this paper also confirms the occurrence of M. tenuicornis from Laos, provides first records of M. stranguloides Chen & Nieser, 1993 and M. nigrofascioides Chen & Nieser, 1993 from Laos, and the first records of M. nigrofascioides and M. tenuicornis from Cambodia.

The taxonomy of the Indo-West Pacific leucosiid crabs of the genus Parilia Wood-Mason, in Wood-Mason & Alcock, 1891, is revised. The genus is redefined and four species are here recognised: P. alcocki Wood-Mason, in Wood-Mason & Alcock, 1891 (type species); P. major Sakai, 1961; P. ovata Chen, 1984; and P. pattersoni, new species. Parilia pattersoni from the eastern Indian Ocean is morphologically similar to P. major but can easily be distinguished by its more granulate carapace, chelipeds and ambulatory legs. Parilia tuberculata Sakai, 1961, is referred to its own genus, Neparilia, new genus, as the structure of its carapace, third maxillipeds, chelipeds, male pleon and male first gonopods are markedly different from Parilia s. str.

The taxonomy of the Indo-West Pacific leucosiid crabs of the genus PariliaWood-Mason, in Wood-Mason & Alcock, 1891, is revised. The genus is redefined and four species are here recognised: P. alcockiWood-Mason, in Wood-Mason & Alcock, 1891 (type species); P. major Sakai, 1961; P. ovata Chen, 1984; and P. pattersoni, new species.Parilia pattersoni from the eastern Indian Ocean is morphologically similar to P. major but can easily be distinguished by its more granulate carapace, chelipeds and ambulatory legs. Parilia tuberculata Sakai, 1961, is referred to its own genus, Neparilia, new genus, as the structure of its carapace, third maxillipeds, chelipeds, male pleon and male first gonopods are markedly different from Parilia s. str.