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; Carahus 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/ej. 
The labrum bilobate. All the known species are large, entirely 
black, or black underneath, and blue or greenish above Avith ex- 
tremely rough elytra. They usually inhabit the mountains in the 
East and South of Europe, and those of Caucasus and Lebanon*. 
The others, in Avhich the labrum is ahv^ays divided into tAVO or three 
lobes, have the anterior tarsi very sensibly dilated in the males. 
These latter are alAA^ays destitute of Avings. Their mandibles are 
smooth, and at their base, or that of one of them, Ave find one or tAVO 
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. — Tachypus, Web. 
The labrum simply emarginate or bilobate ; tooth of the emargi- 
nation of the mentum entire. 
Count Dejean describes one hundred and tAA^enty-four species, Avhich 
he has arranged in sixteen divisions. The first thirteen comprise 
those Avhose elytra are convex or arched, and the three last, those in 
which they are plane, and of Avhich M. Fischer forms tAVo genera 
* Carahus scahrosus, Fsib. •, C. gigas, Creutz., Entom. I, 11, 13; — C. seabrosus, 
Oliv., Col. Ill, 35, viii, 83, long ago described and figured by Mouffet, Insect. 
Theat. 159; — P. tauricus, Dej. Spec. II, 24; Carabus seabrosus, Fischer, Entom. 
Russ., I, 11, 1, b, d, f ; — Procerus caucasicus, Dej., Ib. p. 25 ; Carabus seabrosus, 
Fisch., Ib., c, e. Another but undescribed species has been found in Mount Lebanon 
by M. Labillardiere, 
Carabus coriaceus, Fab., Panz. Faun. Insect, Germ., LXXXI, 1. See the 
Spec. Dej. II, p. 26, et seq. 
