COLEOPTERA. 295 



preceding in the manner in which the elytra are terminated; but the 

 two anterior tarsi alone are dilated in the males, without however 

 forming a square or orbicular palette; sometimes the three first 



Pristonychus, is identical with my Cienipus; to this he refers the Sphodrus terri- 

 cola of his Catalogue. His new genus Pristodactyla closely resembles Taphria, 

 but the last joint of the palpi is elongated and almost cylindrical, and the thorax 

 is oval. He describes but a single species. 



Among the Feronise in which the hooks of the tarsi are simple, four genera, 

 Ompiireus, Olisthopis, Masoreus, and Antarctia, are removed from all the 

 others by the absence of a tooth or lobe in the middle of the emargination of the 

 mentum. The first, of which Count Dejean has only seen the females, is very 

 distinct by the length of the first joint of the antennae which equals that of the 

 three following ones; and then by its palpi the last joint of which is strongly secu- 

 riform. That naturalist places this genus directly after Sphodrus; perhaps it may 

 come among the Patellimani, and approximate to Rembus and Dicselus. The second 

 genus, Olisthopus, belongs to that division in which the three first joints of the 

 anterior tarsi of the males are elongated, and very slightly triangular or almost 

 square its type is the Agonum rotundatum of Sturm. The other two re-enter 

 the division of those in which the three first joints of the two anterior tarsi of the 

 males are but slightly elongated; they are as long as they are wide and strongly 

 triangular or cordiform. The thorax in Masoreus is transversal, rounded laterally, 

 and slightly prolonged in the middle. That of Jlntardia is more or less square or 

 cordiform, and slightly or not all transversal. The Harpalus cireumfusus of Ger- 

 mar, referred by us to Tetragonoderus, is an Antarctia. 



Six other genera, Trigonotoma, Catadromus, Lesticus, Distrigus, Abacetus, 

 and Microcep'h alus, form, among the Feronix: with tarsi analogous to those of the 

 last, a small section, the character of which consists in a trilobate or slightly emar- 

 ginated mentum*. The last genus, that of 31icrocephalus, is very distinct from the 

 others on account of its exterior palpi, all of which are terminated by a securiform 

 joint. The first is similarly distinguished, inasmuch as the termination of the 

 labial palpi of the males is the same. The Omaseus viridicollis of Mac Leay 

 Annul. Javan. is congeneric. In the genera Catadromus and Lesticus, the last 

 joint of the same palpi is, however, slightly securiform, or becomes gradually 

 thickened towards the extremity. The intermediate lobe of the mentum projects 

 and almost in a point in the first, and is but slightly elongated and almost trun- 

 cated in the second, which, like the preceding, consists of Insects proper to India. 

 The last joint of the labial palpi in Distrigus and Abacetus, is almost cylindrical. 

 The intermediate lobe of the emargination of the mentum is almost null in the 

 former; in the latter it is very apparent and rounded. These Carabici are, as yet, 

 foreign to Europe and America. 



The Scarite hottentot of Olivier, which we have placed in the subgenus Feronia, 

 is removed from the species that formed the genus Steropus, by its intermediate 

 tibise which are strongly arcuated. It is from this character that Count Dejean has 



* The ordinary tooth in the middle of the mentum is very large, and thus 

 forms a lobe which diminishes the extent of the emargination. 



