384 INSECTA. 



terminated by an ovoido-cylindrical joint ; the same joint of those of 

 the labium elongated and fusiform. I have not perceived a tooth in 

 the emargination of the mentum *. 



3. Our third section of the Carabici, that of the Quadrimani, — 

 Harpalicus, Dej. f , includes those, otherwise similar to the last in 

 the pointed termination of the posterior extremity of their elytra, in 

 the males of which the four anterior tarsi are dilated ; the three or 

 four first joints are in the form of a reversed heart or triangular, and 

 nearly all terminated by acute angles; they are usually furnished 

 underneath (the Ophoni excepted) with two ranges of papillae or 

 scales, with an intermediate linear space. 



The body is always w-inged, and generally oval and arcuated or 

 convex above ; the thorax is wider than it is long, or at most nearly 

 isometrical, square or trapezoidal. The head is never suddenly con- 

 tracted posteriorily, and the antennae are equal throughout, or slightly 

 and insensibly thickened near the extremity. The mandibles are 

 never very strong. The exterior palpi are terminated by an oval or 

 fusiform joint, longer than the preceding one. The tooth of the 

 emargination of the mentum is always entire, and in some is want- 

 ing t. The legs are robust, the tibiae spiny, and the hooks of the 

 tarsi simple. The intermediate tarsi, even in the females, are short, 

 and, with the exception of the dilatation, nearly formed like the an- 

 terior, These Carabici prefer sandy and hot localities. 



This section is composed of the genus Harpalus, as limited by Bo- 

 nelli in his tabular view of the general distribution ef the Carabici. 

 New sections have still more diminished its extent. They are all 

 subordinate to the three following divisions. 



The characters of the first are : the emargination of the mentum 

 unideniate§; labrum emarginate ; head and anterior extremity of 

 the thorax as wide as the abdomen or wider ||. It comprises tl)ree 

 subgenera. 



AciNOPUs,, Zieg. Dej. 



Filiform antennae, composed of short but cylindrical joints ; the- 

 rax insensibly narrowed from before backwards, with the posterior 

 angels very obtuse or rounded ; mandibles destitute of teeth ; tooth of 

 the emargination of the mentum widely truncated *[]; , 



* Scariles ritfus, Oliv., Col. Ill, 36, 11, 13, a, b ; Rossi, Faun. Etrusc. I, iv, 3 ; 

 Apototmis ruftis, Dej,, iSpec. I, p. 450 ; — Apotomus testaceus, Id., lb., p. 451. 



t This appellation harmonizes with those of the two following sections, and is 

 founded on an exclusive character : it therefore seems to me to be preferable to that 

 of Harpalici, employed by Bonelli. 



J The ligula, as in the two following sections, is always remarkably salient, obtuse 

 or truncated at the end, and accompanied by two distinct, membranous paraglossse 

 in the form of auricles. 



§ If the Cyclosomi have the four anterior tarsi dilated, they will form a fourth 

 division on account of the two teeth in the emargination of the mentum. 



II The head large ; paraglossae rather broad in comparison with the true ligula, 

 and rounded at the end ; second joint of the antennae somewhat shorter than the 

 third ; intermediate tarsi of the males rather less dilated than the anterior. 



^ Harpalus megacephalus, Lat., Gener. Crust, et Insect. I, p. 206 ; Carabus 

 viegacephalus, Fab. ; Ross. Faun. Etrusc, Append., tab. Ill, H ; Adnopus megace- 

 phalus, Dej. Catal. 



