ANNULOSA JAVANICA. 7 
Linneus placed in his genus Si/pha, to which, without doubt, E/ophorus approaclies by some of the 
less typical insects of that groupe, which M. Latreille, in the Genera Insectorum, has named Ne- 
crophaga. From the Necrophaga we pass by means of Micropeplus to Staphylinus,* and then 
Lesteva (the Carahus staphylinoides of the Entomologia Britannica) willserve to conduct us back 
again to the Terrestrial Adephaga. 
I now proceed to the consideration of that normal groupe of the Chilopodomorpha, which 
is the same with the 
COLEOPTERA ADEPHAGA of Clairville and Latreille. 
Character Essentialis. 
Maxille lobo interno unguiculato, ungue interdum articulo inserto ; loho externo palpiformi 
sepissime hiarticulato, qua de causd sex palpos apud Adephaga quidam enumerant. 
The Adephaga of Clairville compose one of those dichotomous groupes which M. Fries 
would term a centrum. They are remarkable for having been characterized as possessing four 
maxillary palpi, two to each maxilla, This excellent characteristic may, however, as above 
explained, be more accurately understood by accounting all Coleoptera as having only two 
maxillary palpi, and the Adephaga to be only peculiar in having a biarticulate process to the 
maxilla, which in some species is degraded to a mere spine. The typical structure of the 
maxilla in adephagous insects seems to be that of the Cicindelide, where this organ has both 
the external and internal lobe biarticulate. In all the other Chilopodomorpha the external joint 
of the internal lobe, when it exists, is as in Cicindela, unguiform, but confluent with or soldered 
to the first joint. j 
‘These predaceous insects evidently form two very natural groupes, viz. the Terrestrial and 
Aquatic Adephaga, the former of which is much more numerous in species than the second. 
A. GEODEPHAGA. 
Apepuaca Trrrestria, Lat. Carapus et CrcrnpeELa, Lin. Pedes tantummodo gressorii. 
Corpus oblongum raro ovatum. Pedes postici motu horizontali et verticali; lamine pectorales 
quibus inseruntur magnitudine mediocres. 
B. HYDRADEPHAGA. 
Apepuaca Aquatica, Lat. Dyricus et Gyrinus, Lin. Pedes natatorii. Corpus ovatui. 
Pedes postici motu tantum horizontali ; lamine pectorales quibus inseruntur maxime. 
If the five following families of terrestrial 4dephaga, which coincide with those of MM. Latreille 
and Dejean, be natural, then the subdivision of them will probably depend on the form of the 
mentum, which deserves particular attention. But although I believe the following table to be 
a very near approximation to the truth, I am inclined to think that the accurate demarcation of 
the respective families depends on the forms of the larvae. Thus, the Cicindelide and Carabide 
are distinguished from all the other terrestrial Adephaga, in having the styliform appendages to 
the body of their larvae corneous ; but the Cicindelide have them dorsal and affixed to the eighth 
segment of their body, in order to suit their mode of life; whereas, the Carabide have them 
caudal. 
* “ Sous quelques rapports les Brachélytres avoisinent Jes Adéphages et sous plusieurs autres les Boucliers et 
les Nécrophores.”—Lat. Régne Animal, vol. iii. p. 216. 
