COLEOPTERA. 45 
ated; where the thighs differ but little in size, and when the anterior 
tibize are in the form of an elongated triangle, and angular. 
These Heteromera are peculiar to South America *. 
The other Pimeliariz, with moniliform antennee and the mentum 
entire, are remarkable for the lateral, angular or strongly dentiform 
dilatations of the thorax. The middle of the back presents a sulcated 
carina terminated anteriorly in the manner of a rounded and bilobate 
gibbosity. The lateral margins of the head are briefly dilated. The 
labrum is entirely exposed and of an ordinary size. The eyes are 
more prominent than in the other Pimeliarie; the antenne, besides, 
are pilose or pubescent. 
The elytra are very unequal. 
Seprpium, Fab. 
They are found in the southern countries of Europe and in Africa t. 
The last Pimeliarize, the mentum as in the preceding ones, being 
unemarginate superiorly, are removed from the latter by the form of 
the joints of their antenne; they are mostly cylindrical or in the form 
of an elongated and reversed cone; the three or four last are alone 
rounded, and either ovoidal, turbiniform or hemispherical. The 
labrum is entirely exposed, and the marginal dilatation of the head 
covering the origin of these organs is but slightly prolonged, as in 
Sepidium. The eyes are nearly round or oyal, entire or but slightly 
emarginate and prominent; the thorax is depressed, sometimes dilated 
on each side in the manner of an angle, sometimes narrower, but sul- 
cated and carinated above; the last joint of the antenne is evidently 
longer and thicker than the preceding. 
These Insects are proper to the Cape of Good Hope. Such are the 
Tracuynorvus, Lat.—Sepivium, Fab.t 
There, the eyes are narrow, elongated, and almost flat. The tho- 
rax is convex, almost orbicular, emarginate before, truncated poste- 
riorly, without angular dilatations and dorsal carina. The second 
joint of the antenneze is, at most, the size of the preceding. 
Movuris, Lat.—Pimewia, Fab., Oliv.—Psammoves§, Kirby. 
The second tribe of the Melasoma, that of the BLapsipEs, receives 
its denomination from the genus Buaps of Fabricius. 
The maxillary palpi terminate by a manifestly securiform or trian- 
gular joint. M. Dufour has observed, that in this genus as well as in 
that of Asida, the crop is less developed than in the Pimeliariz, and 
that the little valve, at which it terminates posteriorly, is not formed 
* Germ., Insect. Spec. Nov., p. 136. 
+ The Sepid. tricuspidatum, variegatum, and cristatwm of Fabricius. 
t The Sepid. reticulatum, rugosum, vitiatum of Fabricius; the S. acuminatum of 
Schenherr. A species, which Count Dejean calls the cucurlioides, and figured by De 
Geer, forms a separate division. 
§ The Pimelie striata, unicolor, gibba of Fabricius. See Lat., Gener. Crust. et 
Insect., II, p. 148;—Psammodes longicornis, Kirb., Lin. Trans., XII, xxi, 13. 
