386 
IKSECTA. 
Stenolophus, Zieg. Dej, 
The Stenolophi only differ from the Ophoni in the form of the pe- 
nultimate joint of the four anterior tarsi, at least in the males, and 
in some even of the posterior; it is divided down to the base into 
two lobes *. 
Acupalpus, Lat. — Stenolophus, Dej. 
The four anterior tarsi of the males differing but little from the 
intermediate joints ; rounder, almost granular, and pilose ; exterior 
palpi terminating by a joint with a pointed extremity. 
They are very small insects, and seem to be allied to Trechus f. 
4. The fourth section, that of the Simplicimani J approaches the 
* Stenolophus vaporariorum, Dej. Ib. ; Carahus vaporariorum, L. ; Panz., Faun, 
Insect. Germ., XVI, 7 ; Harpalus saponarius, Dufour. Senegal. 
-f- The Stenolophi of the Catalogue, Dej., the preceding one excepted. We will 
name, among others, the Carahus meridianus, Lin. and Fab., and the C, vespertinus, 
of Panzer, XXXVII, 21. 
X This section in the system of Dejean, forms his tribe of Carabiques Feroniens, in 
■which — Spec. Gen. des Coleop. Ill — he has established several new genera. Those 
male Feronise, in which the two first joints of the two anterior tarsi are alone dilated, 
are comprised in the genera Pogonus, Cardiaderus Baripus, and Patrobus. 
In the two first, the last joint of the labial palpi is oval or pointed, whilst in the 
other two it is almost cylindrical, truncated at the extremity, and slightly securiform. 
The second — Daptus chloroticus, Fischer — differs from the first in the thorax, which is 
convex, cordiform, and narrowed posteriorly. In Baripus, it is convex and almost 
oval. That of Patrobus is plane, narrow ed posteriorly and more or less cordiform. 
In the other male Feroniae the three first joints of the anterior tarsi are dilated. 
A first subdivision comprehends those Feronise, the hooks of whose tarsi are den- 
tated, and among these the genus Dolichus is the one in which the tooth of the 
middle of the emargination is simple, that is to say, entire. That which he names 
Pristonychus, is identical with my Ctenipus : 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, 
Omphreus, Ohsthopus, Masoreus, and Antarctia, are removed from all the 
othei’S 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 dis- 
tinct by the length of the first joint of the antennse which equals that of the three 
following ones ; and then by its palpi, the last joint of which is strongly securiform. 
That naturalist places this genus directly after Sphodrus ; perhaps it may come 
among the Patellimani, and approximate to Rembus andDicselus. 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 Antarctia is more or less square or cordiform, and 
slightly or not at all transversal. The Harpalus civcumfusus of Germar, referred by 
us to Tetragonoderus, is an Antarctia. 
Six other genera, Trigonotoma, Catadromus, Lesticits, Distrigus, Abace- 
TUS, and Microcephalus, form, among the Feroniae with tarsi analogous to those 
of the last, a small section, the character of which consists in a trilobate or slightly 
emarginated mentum (a). The last genus, that of Microcephalus, is very distinct from 
(a) The ordinary tooth in the middle of the mentum is very large, and thus forms a 
lobe which diminishes the extent of the emargination. 
