Dr. Schaum on four new Genera of Carabide. 77 
The numerous group of Harpalide has been divided by Lacordaire 
and LeConte into three subsections: one embracing the genera in 
which the anterior tarsi of the male are not dilated—Cratoceride, 
Lac.=Dapti, LeC.; the second, those in which the tarsi in the male 
are dilated and clothed underneath with a brush of hair—Anisodac- 
tylide, Lac.= Eurytrichi, LeC.; the third, such as have the anterior 
tarsi in the male dilated and clothed underneath with squamiform 
papille—true Harpalini. The genera of the first subsection have all 
a large and more or less square head, which is not attenuated behind 
(Cratocerus, Geopinus, Daptus, Batoscelis, Nothopus, Amblygnathus, 
Melanotus*), a form of the head which is also found in a number of 
genuine Harpalini, such as Pangus, Schaum, Cratacanthus, Crato- 
gnathus, Barysomus, Anisocnemus, Paramecus. The genus Acinopus, 
associated by Lacordaire with the latter, is, however, to be removed 
from them and to be added to the first subsection ; for although the 
anterior tarsi are somewhat more dilated in the male than in the 
female, they are not clothed underneath with squamiform papille. 
I have already elsewhere (Berl. Zeitschr. 1859, p. 274) drawn 
attention to the close affinity of the apparently anomalous genus 
Heteracantha,. Brullé (Lacord. i. p. 307), with Acinopus ; this is fur- 
ther confirmed by the discovery of Acmastes, which is an intermediate 
form, closely allied in its characters to Heteracantha, but differing 
from it by its short and obtuse mandibles, by the size of its head 
and prothorax, the latter being almost equal in breadth to the 
coleoptera, by its stouter legs, and by the different size and form of 
the tibial spurs, which are almost equal in Heteracantha. In its 
general form it much resembles a Scarites or Pasimachus, and might 
be considered as a proof that Chaudoir was perfectly right in putting 
the remarkable genus Dioctes, Ménétr. (Lac. i. p. 238), as well as 
Heteracantha, next to Acinopus. There is but one character which 
still induces me to associate the latter rather with the Ditomi, while 
it must be acknowledged at the same time that the Ditom: themselves 
can scarcely be separated from the Harpalin: this character con- 
sists in the produced corners of the forehead, by which in Dvroctes as 
well as in the Ditomi the insertion of the antenne is covered; it is 
the only character by which the Ditomi may still be distinguished 
from the Harpalini. 
* Of the genera referred by Lacordaire to this subdivision, Cyclosomus, Somo- 
platus, and Macracanthus have to be removed, Cyclosomus constituting a proper 
group, and Somoplatus and Macracanthus being nearly allied to Masoreus. 
