COLEOPTERA. 34-3 



elytra is almost always truncated. The head and thorax are narrower than the 

 abdomen. The ligula is most commonly oval or square, and is rarely accom- 

 panied on the sides by salient divisions. 



This section consists of Anthia, Graphipterus , Aptinus, Brachinvs, 

 Casnonia, &c. 



2. The BIPARTITI, which in relation to their habits might also be styled 

 Fossores, is composed of Carabici with elytra either entire or slightly insinuated 

 at their posterior extremity; having frequently granose and geniculate antennae; 

 a broad head, large thorax, usually shaped like a cup or almost semi-orbicular, 

 and separated from the abdomen by an interval which causes the latter to ap- 

 pear pediculated; the legs generally but slightly elongated, their tarsi usually 

 short, and similar in the two sexes, or nearly so, without any brush beneath, 

 and simply furnished with ordinary hairs or cilia. The two anterior tibiae are 

 dentated, and in several palmated or digitated; the mandibles frequently 

 strong and dentated. There is a tooth in the emargination of the mentum. 

 They all keep on the ground, conceal themselves either in holes which they 

 excavate, or under stones, and frequently only leave their retreat at night. 



They are usually of a uniform black. The larvae of the Ditomus bucephalus, 

 the only one that has been observed, has the form and mode of life of the 

 larvae of the Cicindelse. They are more particularly proper to hot countries. 



The genera are Enceladus, Siaquona, Pasimachus, Scarites, &c. &c. 



3. The QUADRIMANI, 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 winged, 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 contracted posteriorly, 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 

 wanting. 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 anterior. These Carabici 

 prefer sandy and hot localities. 



Here we have, Acinopus, Dapfus, Harpalus, &c. 



4. The SIMPLICIMANI approaches the 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 



