182 CLASS INSECTA. 



the end. The final articulation of the labial palpi is almost 

 hatchet-formed, and the preceding often curved. The corslet 

 is almost cylindrical, narrowed, and strangulated in front, 

 with the anterior edge widened. The abdomen, which is 

 also almost cylindrical, is widened and enlarged posteriorly. 

 The tarsi are similar in the two sexes, with the penultimate 

 articulation prolonged obliquely at the internal side, equally 

 large as the preceding, and this last in the form of a reversed 

 triangle, with acute angles. 



The species which 1 have described and figured, under the 

 name of lojigicollis, is distinct from that so designated by 

 Fabricius. It is the colliuris emarginata of M. Dejean. 

 Spec. Gen. I. p. 165. 



Trioondyla, Lat. 



Here the wings are wanting, the antennae are filiform, and 

 the last articulation but one of the labial palpi, is the longest 

 and the thickest of all. The corslet is in the form of a knot, 

 sub-ovoid, strangulated, truncated, and double-edged at the 

 two ends. The abdomen .is ovalary, oblong, narrowed to- 

 wards its base, and a little gibbous posteriorly. The first 

 three articulations of the anterior tarsi are dilated in the 

 males ; the third is prolonged obliquely, in the internal side, 

 in the manner of a lobe. The following is almost similar, 

 but much smaller, and less prolonged — 



The second tribe, that of the Carabici, Lat., comprehends 

 the genus, 



Cauabus, L., 



Which has the jaws terminated simply in a point or crotchet, 

 Avithout articulation at its extremity. Their head is usually 

 more narrow than the corslet, or at most, of the same breadth. 

 Their mandibles, with the exception of those of a few, have 

 none, or very few denticulations. The ligula is usually pi-o- 



