COLEOPTERA. 387 



preceding in the manner in which the elytra are terminated ; but the 

 two anterior tarsi alone are dilated in the males, without however 

 forming a square or orbicular palette; sometimes the three first 

 joints are much wider, and in this case the succeeding one is always 

 smaller than its antecedent ; sometimes the latter and the two pre- 

 ceding ones are larger, almost equal, and in the form of a reversed 

 heart or triangular : the first joints of the four following tarsi are 

 more slender and elongated, almost cylindrical, or in the form of an 

 elongated and reversed cone. 



In some, the hooks of the tarsi are simple or not dentated. 



Here the third joint of the antennae is, at most, double the length 

 of the preceding one. The feet are generally robust, the thighs thick 

 and more or less oval ; the thorax measured in its greatest transversal 

 diameter is as wide as the elytra. 



Sometimes the mandibles are evidently shorter than the head, not 

 projecting beyond the labrum at most more than half their length. 



We will begin with those in which the exterior palpi are filiform. 



ZABRUS, Clairv. Bon. PELOB, Bon. 



Distinguished from the following by the last joint of the maxillary 

 palpi, which is evidently shorter than the preceding one, and by the 

 two spines which terminate the two anterior tibiae *. 



POGONUS, Zieg. Dej. 



The Pogoni, which in a natural order appear to us to be closely 

 allied to the Amara. of Bonelli, are removed from the other Carabici 



the others on account of its exterior palpi, all of which are terminated by a securi- 

 form joint. The first is similarly distinguished, inasmuch as the termination of the 

 labial palpi of the males is the same. The Omaseus viridicollis of Mac Leay Annul. 

 Javan. is congeneric. In the genera Catadromiu and Lcsticus, the last joint of the 

 same palpi is, however, slightly securiform, or becomes gradually thickened towards 

 the extremity. The intermediate lobe of the mentum projects and almost in a point 

 in the first, and is but slightly elongated and almost truncated in the second, which, 

 like the preceding, consists of Insects proper to India. The last joint of the labial 

 palpi in Distriyvu and Abacctus is almost cylindrical. The intermediate lobe of the 

 emargiuatiun of the mcntam is almost null in the former ; in the latter it is very ap- 

 parent and rounded. These Carabici are, as yet, foreign to Europe and America. 



The Scarite Hottentot of Olivier, which we have placed in the subgenus Feronia, 

 is removed from the species that formed the genus Sterupus, by its intermediate tibiae 

 which are strongly arcuated. It is from this character that Count Dejean has 

 separated this insect from the Feroniae, and formed the genus CAMPTOSCELIS. The 

 last joint of the exterior palpi being strongly securiform in MY AS, that genus should 

 also be distinguished from the Feronia:. 



Count Dejean has observed that in the genus PELOR, of Bonelli, the tooth of the 

 middle of the cmargination of the mentum is bifid, while it is entire in Zabrus. He 

 retains, as we have already stated, his genus Amara, but if the characters assigned 

 to it be compared with those of the Feroniae, the slightness of this generic distinction 

 will soon be perceived. The last joint of the palpi of the Amarae is slightly oval ; it 

 is cylindrical or slightly securiform in the Feroniae. His genus Trtragonodmu differs 

 but very little from that of Amara. The tooth in the middle of the emargination of 

 the mentum is truncated and entire, or without a fissure. 



Carabia yibbu, Fab.; Labna gibtna, Clairv., Entom. Helv., II. xi. For the 

 other species, see Catalogue, &c. of Dejean, and the third volume of his Species, 

 Oener., &c. The apterous species, such as the Blaps spinipes, Fab. ; Pans. Faun. 

 Insect. German., XCVI, 2, form the genus Ptlor. 



c c 2 



