COLEOPTERA. 451 



entire, are remarkable for the lateral, angular or strongly dentiform 

 dilatations of the thorax. The middle of the back presents a sul- 

 cated 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 Piraeliariaej the an- 

 tennae, besides, are pilose or pubescent. 

 The elytra are very unequal. 



Sepidium, Fab. 



They are found in the southern countries of Europe and in 

 Africa(l). 



The last Pimeliarias, the mentum as in the preceding ones, 

 being unemarginate superiorly, are removed from the latter by the 

 form of the joints of thfcir antennaej they are mostly cylindrical or 

 in the form of an elongated and reversed conej the three or four last 

 are alone rounded, and either ovoidal, turbiniform or hemispheri- 

 cal. The labrum is entirely exposed, and the marginal dilatation of 

 the head covering the origin of these organs is but slightly prolong- 

 ed, as in Sepidium, The eyes are nearly round or oval, entire or but 

 slightly emarginate and prominent^ the thorax is depressed, some- 

 times dilated on each side in the manner of an angle, sometimes 

 narrower, but sulcated and carinated above; the last joint of the 

 antennae is evidently longer and thicker than the preceding. 



These Insects are proper to the Cape of Good Hope. Such are the 



Trachynotus, Lat. — Sepidium, Fab. (2) 



There, the eyes are narrow, elongated, and almost flat. The tho- 

 rax is convex, almost orbicular, emarginate before, truncated poste- 

 riorly, without angular dilataiions and dorsal carina. The second 

 joint of the antennae is, at most, the size of the preceding. 



MoLURis, Lat. — Fimelia, Fab. Oliv. — Psammodes[5), Kirby. 



The second tribe of the Melasoma, that of the Blapsides, 



receives its denomination from the genus Blaps of Fabricius. 



The maxillary palpi terminate by a manifestly securiform 



, (1) The Sepld. tricuspidatum, variegatum, and cristatum of Fabricius. 



(21 The Sepid. retkulatwn, rugosum, vittatum of Fabricius; the iS". acuminatum 

 of Schcenherr. A species, which Count Dejean calls the cueurlioides, and figured 

 by De Geer, forms a separate division. 



(3) The Pimelix striata, laiicolor, gibba of Fabricius. See Lat., Gener. Crust, 

 et Insect., II, p. 148; — Fsammodes longicornis, Kirb., Lin. Trans, XII, xxi, L). 



