COLEOPTERA. 501 



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

 following subgenera : — 



Pamborus, Latr., has the mandibles curved, and strongly toothed throughout the whole length ; and the outside 

 of the tibia; is produced at the tip into a point. The last joint of the outer palpi is semi-oval and longitudinal. P. 

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

 Magasin dc Zooloi/ie.] 



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

 i.to a point at the tip ; the tarsi are alike in botn sexes ; the thorax is in the form of a truncated heart, or nearly 

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



iScajihinotiis, 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. 



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

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



[Dr. Harris has just published (1839) a memoir on Cychrus in the Boston Naf. Hist. fioc. Transactions, in which 

 he suggests that the dilt'erent genera separated therefrom ought to be expunged.] 



A second division is formed of those species which have also the body ro!)nst, generally wingless, but 

 with the mentuni 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. Megertei, 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 Panagaeus, with which it agrees in the majority of its 

 characters.] 



Procerus, Meg., has the labrum bilobed, with the tarsi alike in both sexes. Carabns sealirosiis, Fabr. &r. 



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

 They inhabit the mountains of the east of Europe, Caucasus, Libauus, &c. 



Procrustes, Bon., has the labrum bilobed, and the tooth of the notch of the mentum bifid ; the fore tarsi of the 

 males is dilated. Carabu^ coriaceus, [a reputed British species]. 



Carabus, Linn. (Tachypus, Web.), has the labnmi simply 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 Europe, 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 auratus, Linn., Panz., is a common continental species, which 

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

 it feeds upon Worms. Tliere 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 C. clathratus, a rare Irish insect, here figured.] 



Colosoma, Weber {Caltisl/ienes, Fischer), is generally winged ; the mandibles are 

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

 and rounded at the sides, without elongated po.sterior angles ; the abdomen is 

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

 species are fewer than in Carabus, but they extend from the north to the equator. 

 Type, Carabus sycoplianta, IJnn., three-fourths of an inch long, of a velvet black 

 with the elytra golden green, or brilliant copper, very tinely striated, each having „.,,„. 



■'''''' fi ! 1 1 ) B pi^ 54.— Carabus clathratus. 



three lines of fine impressed dots. Its larva lives in the nests of the processionary 



Caterpillars, upon which it feeds, devouring many in the course of a day. Other larvie of its own species, smaller 

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

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

 this larva, by Dr. Hermann Burmeister, is published in the Transactions of the Entomological Society, in the last 

 part of which Mr. Hope has also published the descriptions of some species brought home by Mr. Charles Darwin, 

 the celebrated naturalist of the e.xpedition of the Beagle.] 



A third and last division of the Grandipalpi is at once distinguished from the former by a series of 

 charactcis. 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 slightly dilated at the tips; the inner edge of 

 the mandibles is not armed with distinct iccth ; and the tooth of the mentum-notch is bifid. The fore 

 tibia; of many species have a short notch at the inner side, where one of the spines is inserted higher 

 than the other : so that these Carabicpies, as well as those of the following section, might come imme- 

 diately after the Patelliniani. They generally frequent humid and aquatic places. Some of them, 

 such as Omophron, seem to unite this tribe with the following, or the aquatic carnivorous species. 



