400 INSECTA, 



body, and most commonly apterous, like the preceding, but in which 

 the middle of the emargination of the mentum is provided with an 

 entire or bifid tooth, and where the mandibles are, at most, armed 

 with one or two teeth, situated at their base. 



The thorax is always in the form of a truncated heart. The abdo- 

 men is most frequently oval. 



Some of them, in which the labrum is occasionally entire, have all 

 the tarsi identical in both sexes, 



Tefflus, Leach. 



The Teffli are the only ones of this division in which the labrum is 

 entire or unemarginate. 



T.Megerle; Carabm Megerlei, Fab.; Voet, Col. II, xxxix, 

 49. Nearly two inches in length ; all black ; thorax rugose ; 

 elytra divided by longitudinal ribs with elevated points in their 

 sulci, last joint of the exterior palpi very large, elongated and 

 securiform, the internal edge curvilinear; tooth in the emargi- 

 nation of the mentum small ; third joint of the antennae at least 

 thrice the length of the second. 



Procerus, il/erjT. 



The labrum bilobate. All the known species are large, entirely 

 black, or black underneath, and blue or greenish above with ex- 

 tremely rough elytra. They usually inhabit the mountains in the 

 East and South of Europe, and those of Cavicasus and Lebanon*. 



The others, in which the labrum is always divided into two or three 

 lobes, have the anterior tarsi very sensibly dilated in the males. 



These latter are always destitute of wings. Their mandibles are 

 smooth, and at their base, or that of one of them, we find one or two 

 teeth. The thorax is cordiform and truncated, sub-isometrical, or 

 longer than it is broad. The abdomen inclines to an oval. 



Procrustes, Bon. 

 The labrum trilobate ; tooth in the emargination of the mentum 

 bifid f. 



Carabus, Lin. Fab. — Tachyfus, Web. 



The labrum simply emarginate or bilobate ; tooth of the emargi- 

 nation of the mentum entire. 



Count Dejean describes one hundred and twenty-four species, which 

 he has arranged in sixteen divisions. The first thirteen comprise 

 those whose elytra are convex or arched, and the three last, those in 

 which they are plane, and of which M. Fischer forms two genera 



* Carabus scahrosus,Ta}}.; C. gicjas, Creutz., Entom. I, 11, 13; — C. scobrosus, 

 Oliv., Col. Ill, 35, viii, 83, long ago described iind figured by Mouffet, Insect. 

 Theat. 159; — P. tauricus, Dej. Spec. II, 24; Carabus scabrosiis, Fischer, Entom. 

 Russ., I, 11, 1, b, d, f ; — Procerus caucasicus, Be}., lb. p. 25 ; Carabus scabrosus, 

 Fisch., lb., c, e. Another but undescribed species has been found in Mount Lebanon 

 by M. Labillardiere. 



t Carabus coriaceus, Fab., Panz. Faun. Insect. Germ., LXXXI, 1. See the 

 Spec. Dej. II, p. 26, et seq. 



