COLEOPTERA. 



501 



toothed throughout, or nearly throughout, its whole length, compose a first division, consisting of the 

 following subgenera: — 



Pqmborus, Latr., lias the mandibles curved, and strongly toothed throughout the whole length ; and the outside 

 of the tibix'is produced at the tip into a point. The last joint of the outer palpi is semi-oval and longitudinal. /'. 

 alternant, Latr., from New Holland. [Several other species are described in a monograph by M. Gory, in Guerin'i 

 Magasin </<■ Zoologie.~\ 



Cychrus, Latr., has the mandibles straight, and simply curved at the tip; the anterior tibia 1 are not produced 

 into a point at the tip ; the tarsi are alike in hotn sexes ; the thorax is in the form of a truncated heart, or nearly 

 orbicular, with the posterior angles obsolete. [Type, C. rottratus, Fabr. ; a not uncommon British species.] 



Scophinotus, Latr., has the three basal joints of the fore tarsi of the males dilated but slightly, and in the 

 form of a plate ; the thorax trapeziform and broad, with the posterior angles acute, and turned upwards. Cychrus 

 elevatus, Fabr. ; North America. 



Sphverodervs, Dejean, has the aspect of Cychrus ; but with the two basal joints of the anterior male tarsi very 

 broad, and forming a broad plate. [S. Lecontei, Dejean ; North America.] 



I >r. Harris has just published (1839) a memoir on Cychrus in the Jioston Nat. Hist. Soc. Transactions, in which 

 he suggests that the different genera separated therefrom ought to be expunged.] 



A second division is formed of those species which have also the body robust, generally vsingless, hut 

 with the mcntiim furnished with an entire or bifid tooth, and the mandibles armed with one or two 

 teeth situated at the base ; the thorax is in the form of a truncated heart; the abdomen is often 



oval. 



Tefflus, Leach, has the labrum entire, and the tarsi are alike in both sexes. T. MegerM, nearly two inches 

 long. From the coast of Guinea. The last joint of the maxillary palpi is very large, and hatchet-shaped. [M. 

 Brulle* has removed this genus to the group containing Fanagaus, with which it agrees in the majority of its 

 characters.] 



Procerus, Meg., has the labrum bilobed, with the tarsi alike in both sexes. Carabus scabrosus, Fabr. &c. 



All these species are of large size, entirely black or blue, or green above, with the elytra very much chagrined. 

 Tii. \ inhabit the mountains of the east of Kurope, Caucasus, Libanus, &c 



Proerutta, Bon., lias the labrum bilobed, and the tooth of the notch of the mentum bifid ; the fore tarsi of the 

 males is dilated. Carabut coriaceut, [a reputed British species]. 



Carabus, Linn. (Tachypus, Web.), has the labrum Bimply notched or bilobed, and with the tooth of the mentum- 

 notch entire; the fore tarsi dilated in the males; they are destitute of wings. 

 Dejean describes one hundred and twenty-four species, divided into sixteen sec- 

 tions. The majority of these species inhabit Kurope, Caucasus, Siberia, Asia 

 Minor, Syria, and the north of Africa. Some have been brought from the two 

 extremities of America ; and it is probable that the intermediate countries possess 

 others. Carabus aitratux, Linn., Panz., is a common continental species, which 

 ha- received the ordinary name of the Gardener, [being found in gardens, where 

 it feeds upon Worms. There are nearly twenty British species, the nomenclature 

 of several of which is very confused in its synonymes. One of the largest 

 and best characterized species is ('. clathratus, a rare Irish insect, here figured.] 



Colosoma, Weber (Callisthenet, Fischer), is generally winged ; the mandibles are <*■ 

 without distinct teeth on the inner edge; the thorax is transverse, equally dilated r 

 and rounded at the sides, without elongated posterior angles; the abdomen is 

 nearly square ; the four posterior tibiae are curved in the males of several. The 

 species are fewer than in Carabus, but the) extend from the north to the I 

 Type, Carabus sycophanta, Linn., three-fourths of an inch long, of a velvt 

 with the elytra golden green, or brilliant copper, very finely striated, each having 

 I lines of fine impressed dots. It-- larva lives in the nests of the processionary 

 Caterpillar-, npon which it feeds, devouring many ill the course of a day. Other larva; of its OWU species, smaller 

 and younger, attack and devour it when its voracity has overcome its activity. They are black; andaresome- 

 - found running on the ground, or upon trees, especially the oak. [An elaborate anatomical memoir upon 

 ibis larva, by Dr. Hermann Bnrmeister, is published in the transactions of the Entomological Society, in the last 

 pari of winch Mr. Hope has also published the descriptions of some species brought borne bj Sir. Charles Darwin, 

 t e celebrated naturalist of the expedition of the Beagle.] 



A third and la-t division of the Grandipalpi is at once distinguished from the former by a series oi 

 characters. The majority are winged; the basal joints of the fore tarsi of the males are always 



dilated; the labrum is entire; the outer palpi are very slightl] dilated at the tips ■ the inner ed| 



the mandibles is nol armed with distinct teeth ; and the tooth of the mentum-notch i- bifid. The fore 

 tibiae of man] species have a ibotl notch al the inner side, where one of the spini - is ins< rted higher 

 than the other : so that thi se I arabiques, as well as those of the follow big section, might come imme- 

 diately after tlie I'.itellimani. They generally frequent humid and aquatic places. Some of them, 



Such as Omophron, seem to unite this tribe with the following, or the aipiatic Carnivorous -]»■ 



c equator. jf 

 Vet blaek > / 



Flf. M.— Curttral cUthntui. 





