Sl 
PLATES XXI, XXII, AND XXIII. 
ON THE SCARITIDEOUS BEETLES OF NEW HOLLAND. 
—_@——- 
Tue insects represented in these three plates are referable to 
the section of the Carabidze, which Latreille denominated Bipartiti 
or Fossores, and Dejean Scaritides, and which was characterised by 
having the elytra not truncate at the tips (as in the Brachinides) ; 
the antennze often elbowed, the thorax generally almost semicircu- 
Jar, and separated from the abdomen by a narrowed peduncle and 
the legs generally rather short, with the fore tarsi not dilated in 
the males, and the fore tibize palmated. 
In the second edition of the “ Regne Animal ” we find the genus 
Carenum, of Bonelli (composed of a single species, Se. cyaneus, 
Fab., from New Holland), placed in conjunction with Enceladus and 
Siagona, on account of the large triangular form of the last joint 
of its labial palpi. To these succeed the majority of the genera 
having palmated fore feet and a long second joint of the antennee, the 
section being terminated by a second subdivision, composed of the 
genera Morio, Ozena, Ditomus, and Apotomus, in which the fore 
tibize are not palmated, and the second joint of the antennze com- 
paratively short. 
It is impossible, on studying this arrangement, not to arrive at 
the conclusion that it is entirely artificial: thus, the Australian 
Carenum (which is the more immediate object of our observations) 
has no further character in common with Enceladus and Siagona, 
than in having the dilated terminal joint of the labial palpi; whereas 
in its general structure, palmated tibiae, and elongated second 
joint to the antennee, it unquestionably belongs to the group typified 
by Scarites proper. We find, however, in the structure of the 
mouth, another character, which occurring in an organ of peculiar 
importance in the classification of the Coleoptera, adds far greater 
weight to the relation of Carenum with the last-named genus and 
its immediate relations *. Latreille himself had observed this 
* Boisduval (Voy. de l’ Astrolabe, p. 23), states that Carenum ‘a une grande analogie avec 
les Scarites, les Encelades, les Pasimaches, les Ozena, les Clivina et les Morio.” He does not, 
however, describe in what the analogy with which such discrepant genera consists. 
NO. VI.—Ilst MARCH, 1842, G 
