COLEOPTERA. 
405 
riorly; the exterior palpi terminate by a sub-oval joint, narrowed 
into a point at the extremity. The mandibles project but little 
beyond the labrum. Tarsi identical in both sexes. 
The anterior extremity of the head forms a small snout. The 
body is plane above, and the thorax trapezoidal, almost as Avide as 
the head, and slightly narrowed posteriorly. 
Notiopiiilus Dumer. — Elaphrus, Fab. Oliv.* 
Our second general division of this tribe, or that of the Subulipalpi, 
is distinguished from the preceding one by the form of the exterior 
])alpi, of which the penultimate and obconical joint is united to the 
following, forming with it a common oval or fusiform body, termi- 
nated, either insensibly or suddenly, in a point, or in the manner 
of an awl. Tlie internal side of the two anterior tibiae is always 
emarginated. These Insects, both as respects their form and mode 
of living, are very similar to the preceding ones. 
Bembidion, Lat. — Bembidium, Gyll. Dej. 
Penultimate joint of the exterior palpi large, inflated, and turbi- 
nated; the last much more slender, very short or acicular ; first joint 
of the two anterior tarsi dilated in the males. 
Messrs. Ziegler and Megerle have divided this subgenus into 
several others f, but without giving their character or depending 
as it would appear, on the changes in the form of the thorax. 
* Cicindela aquaiica, L. ; Elaphrus aquaiicus, Fab. ; Panz., Faun. Insect. Germ., 
XX, 3; — Elaphrus higutlatus, Fab., and to which Count Dejean refers his C. semi- 
punctaius. See Spec. II, p. 276, et seq. 
This division, in a natural series, should probably be placed directly after that 
of the Carabici Ciuadrumani. In the genus Masoreus, Dejean, (p. 420), the two 
anterior tarsi of the males resemble those of Harpali ; the emai-gination of the 
mentum is destitute of a tooth as in Stenolophus, Acupalpus, &c. ; but the maxillary 
palpi terminate nearly as in Bembidion ; the two last joints are united and form one 
body, the penultimate merely being rather shorter than the last and obconical, and 
the latter, cylindrical and truncated. 
The genera Po^onas and Cardiaderus of Count Dcjean appear to us to be connected 
with the Amara of Bonelli, notwithstanding the difference in their tarsi. From 
what we observe in the Cicindeletae and the Carabici Grandipalpi, evidently natural 
divisions, it may be seen that the tarsi vary according to the sex, and that if we 
chiefly depend on characters drawn from these parts, we may form sections, method- 
ical it is true, but which are in direct opposition to the natural order. 
f This subgenus may be thus divided. In some the thorax is less depressed, is at 
least as long as it is wide, much narrower posteriorly than before, cordiform and 
truncateil, with the posterior angles very short or but slightly elongated. 
Those in which this part of the body presents no decided impression at its poste- 
rior angles, and whose eyes are very large, and cause the head to appear wider than 
the thorax, form the genus Tachypus of Megerle. 
Those whose eyes, as in all the following divisions, are less prominent, so that 
the thorax is not wider than the head, but otherwise presenting similar characters, 
constitute the Bemhidium properly so called of Dejcan. 
The Count, with Megerle, places in the genus Lopha those in which the thorax, 
having the same form and proportions, presents at each posterior angle a marked 
impression, so that these angles are well bordered. 
The others have a flatter body, the thorax wider than it is long, and proportion- 
ably less narrowed posteriorly ; its posterior angles always exhibit a strong impres- 
sion, and a little oblique carina. 
