(CARABIDAE: PTEROSTICHINI: AGONI)

The Neotropical agonine genus Glyptolenus Bates is briefly redefined to include certain species heretofore assigned to Colpodes MacLeay. All described species are keyed, and the following data are given for each: major literature citations; type-locality; label data and type-depository; and notes on distribution and relationship. Type-localities are restricted for some species. Lectotypes are designated for all names not borne by clear holotypes. All undescribed species known to me are treated parenthetically in the key and briefly mentioned in the discussion of closely related forms. Of 19 species-group names recognized as valid, 12 are new combinations in Glyptolenus. Four other names are treated as synonyms, the following 3 as new synonymies: G. chalybaeus Dejean 1831 (=G. lebioides Bates 1878); and G. ruficollis Chaudoir 1878 (= G. cayennensis Chaudoir 1878, = G. viridinitens Oberthur 1883). Bates (1878) described the genus Glyptolenus to contain G. rugicollis, an agonine with grooved tarsi and tibiae. In 1882 and 1884, he transferred 3 species with these characteristics from Colpodes to Glyptolenus, and added 2 new species: G. ater (Chaudoir), G. janthinus (Dejean), G. latitarsis Bates, G. nigrita (Chaudoir), and G. transformatus Bates. Only 1 additional species has since been placed in Glyptolenus, the West Indian G. simplicicollis Darlington. During my study of Mexican Colpodes type material in London and Paris in 1968, I found Bates' interpretation of the genus to be illusory. Chaudoir (1878) keyed a section of Colpodes on the canaliculate structure of the tibia, correctly disregarding presence or absence of longitudinally directed median sulci on the dorsal surfaces of the tarsal articles. This arrangement is reflected in his collection, with species recognized as Glyptolenus by Bates interspersed with many other species in which the tarsi are not distinctly sulcate. This paper extends my treatment of Mexican Platynus (1973), in which I characterized Glyptolenus as Agoni (sensu Lindroth 1966) with anterior tibia externally canaliculate and male genitalia basally melanistic. This diagnosis is sufficient to distinguish Glyptolenus from all other Agoni genera of the World. Glyptolenus is an exclusively New World genus; I plan a detailed revision of the species of Mexico and Central America, but have no plans to revise the South American species. I here treat all names referable to the genus, in essentially the same format as in my Platynus paper except that the discussion for each included form is more extended. I have examined type material for each included name, and here designate lectotypes as appropriate. In the key