Based on adult structural features of a single male specimen in Bates' collection of the Muséum national d'Histoire naturelle (MNHN), Paris, a new genus and new species of Orthogoniini (Coleoptera: Caraboidea), Neoorthogonius orientalis Tian and Deuve, from Bombay, Maharashtra State, India is described and illustrated. This new genus is distinct from other genera of the Oriental Orthogoniini by its sub-moniliform antennae, extraordinarily dilated hind femora, narrow pronotum, and abdominal ventrites 4–6 with cilia at hind margins. Neoorthogonius presents a unique lineage. It is more closely allied to Orthogonius Macleay than other genera among Orthogoniini according to the elytral structure and bisetose state of apex of the ligula.

The Japanese species of the genus Armostus Sharp, 1890 are revised. Two new species, A. nigricans Hoshina and Satô and A. ohyamatensis Hoshina and Satô are described. A. schenklingi (d'Orchymont 1914) is recorded for the first time from Japan. A key to the Japanese species is given.

New records of Corylophidae from the Maritime Provinces of Canada are reported. Eight species are added to the Nova Scotia fauna, two species to the New Brunswick fauna, and one species to that of Prince Edward Island. Four species, Clypastrea fuscum Harold, Clypastrea lunata (LeConte), Rypobius marinus LeConte, and Gloeosoma hesperus (Casey) are reported for the first time in Canada. The bionomics of the group and questions of their distribution in the Maritime Provinces are briefly discussed.

The female genitalia of New World Cryptocephalini was studied and illustrated based on representatives of 11 of the 13 genera of the tribe. It was found that female genitalia contain pleurites IX, a rare and apparently primitive feature among leaf beetles. In other features cryptocephaline female genitalia are simpler than genitalia of other leaf beetles in having a poorly sclerotized sternite VIII and lacking the tignum. It is also hypothesized that the vagina is formed by sternites IX (dorsally) and VIII (ventrally), and that sclerotized plate of sternite IX can be homologized with vaginal palpi of flea beetles. A set of characters of diagnostic and of possible phylogenetic value was found. In general, Cryptocephalina and Monachulina bear the greatest affinity in overall morphology of the female genitalia, with Pachybrachina possessing a different set of unique morphological states. Of particular diagnostic and phylogenetic value at the subtribal level, as revealed by this study, are the shape and degree of sclerotization of tergite VIII, tergite IX, and sternite VIII.

The diversity of carabid assemblages at newly established field margins was compared to the diversity in surrounding fields and woodland habitats at Dongbeiwang village, Beijing. Carabids were sampled using 6 pitfalls per plot at a total of 12 plots in the year 2000. Although sampled only a year after their establishment, field margins harbored the most abundant and diverse carabids assemblages of all sites. More than a quarter of carabid species encountered were furthermore restricted to catches from field margins. Also woodland and fields under rotational wheat/maize cultivation harbored some unique species. Therefore, a short term establishment of field margins is effective in enhancing diversity and abundance of carabids, an important predator group in the agricultural landscape, while only the preservation of a heterogeneous landscape will enable the conservation of the overall species diversity.

The following new synonymies within the genus Loxandrus are proposed: L. parvicollis Casey, 1918 and L. concinnus Casey, 1918 with L. celeris (Dejean, 1828); L. crenulatus Chaudoir, 1868 with L. crenatus LeConte, 1852; L. calathinus LeConte, 1878 and L. cursitans Casey, 1918 with L. agilis (Dejean, 1828); L. suturalis Casey, 1918 with L. cervicalis Casey, 1918; L. comptus Casey, 1918, L. contumax Casey, 1918 and L. breviusculus Casey, 1924 with L. floridanus LeConte, 1878; L. aduncus Allen, 1972 with L. parvulus Chaudoir, 1868; L. minutus Allen, 1972 with L. pusillus LeConte, 1852; L. vitiosus Allen, 1972 with L. vulneratus Casey, 1918; L. fulgens Casey, 1918 with L. brevicollis (LeConte, 1848); L. ludovicianus Casey, 1918 with L. collucens Casey, 1918; L. limatus Casey, 1918 with L. rectus (Say, 1823); L. reflexus LeConte, 1878 and L. lateralis Casey, 1918 with L. saphyrinus (Chaudoir, 1843). Syntypes of Loxandrus accelerans Casey, 1918, L. collucens Casey, 1918, L. piceolus Chaudoir, 1868