INSECTA. 
396 
The genus Lissauchenus of Mac Leay, Jun. — Annul. Javan., I, 
i, 1 — appears to me to differ but slightly from the preceding. 
The others, most commonly, have their mandibles very obtuse, or 
as if truncated and forked, or bidentated at the extremity. Their 
labrum is distinctly emarginate or bilobate, and the anterior portion 
of the head from which it arises, is bordered and frequently concave. 
There is no tooth in the emargination of the mentum. The tarsial 
palette of several is broad and almost orbicular. 
The mandibles of these latter terminate in a point without any 
tooth or emargination under it. 
The tarsial palette of the males is composed of the three first joints. 
Rembus, Lat. 
The labrum bilobate; exterior maxillary palpi filiform; last joint 
of the labial palpi somewhat enlarged, and in the form of a reversed 
and elongated cone. 
The head, in comparison with the width of the body, is narrow; 
the antennae and palpi are slender* * * § . 
DicasLUs, Bon. 
The labiaim simply emarginate with an impressed longitudinal line 
in the middle ; the last joint of the exterior palpi is the largest and 
almost securiform. 
The body nearly forms a parallelepiped ; the head is almost as wide 
as the thorax, and the elytra are strongly striated and frequently 
carinated laterally. The mandibles are arcuated inferiorly on the 
internal margin, and then as if truncated and terminated in a point. 
The species known are from America f . 
Those have very obtuse mandibles, emarginate at their extremity, 
or unidentate beneath. 
Licinus, Lat. 
The last joint of the exterior palpi largest and almost securiform ; 
tarsial palette of the males broad, suborbicular, and formed by the 
two first joints, the first of which is very large 
Badister, Clair. — Amblychus, Gyll. 
Last joint of the exterior palpi oval ; that of the labial palpi merely 
somewhat thicker, and frequently terminating in a sharp point; tar- 
sial palette forming a long square, and composed of the three first 
joints §. 
* Rembus politus, Fab. ; Herbst., Archiv. XXIX, 2 ; — R. impressus, Dej. ; Carab. 
impressus, Fab. 
t See Dej. Spec. II, 283. They are the Die. chalybeeus, alternans, furvus (D. 
elongatus, Say), simplex and politus — all, I believe, that have as yet been ascer- 
tained. 
+ Carabus agricola, Oliv., Col. Ill, 35, V, 53 C. silphoides, Fab. ; Sturm, III, 
Ixxiv, a; — C. emarginalus, Oliv., Ib., XIII, 150 — Carabus cassideus, Fab. ; C. de- 
pressus, Payk. ;'Sturm, Ib., LXXIV, o, O C. Hoffmanseggii, Panz. Faun. Insect. 
Germ., LXXXIX, 5. See Spec. Dej. II, p. 405 — 4ii. 
§ Carabus bipustulatus, Fab. ; Clairv., Entom. Helv. II, xiii • C, peltatus Illiff • 
Panz. Ib. XXXVII, 20. See Spec. Dej. II, p. 405—411. ' » 
