COLEOPTEKA. 307 



DicjElus, Bon. 



The labrum simply emarginate with an impressed longitudinal 

 line in the middle; the last joint of the exterior palpi is the largest 

 and almost securiform. 



The body nearly forms a parallelopiped; the head is almost as 

 wide as the thorax, and the elytra are strongly striated .and fre- 

 quently carinated laterally. The mandibles are arcuated inferiorly 

 on the internal margin, and then as if truncated and terminated in 

 a point. The species known are from America(l). 



Those have very obtuse mandibles, emarginate at their extrem- 

 ity, or unidentate beneath. 



Licinus, Lat. 



The last joint of the exterior palpi largest and almost securiform; 

 tarsial palette of the males broad, suborbicular, and formed by the 

 two first joints, the first of which is very large(2). 



Badister, Clair. Jlmblychus, Gyll. 



Last joint of the exterior palpi oval; that of the labial palpi 

 merely somewhat thicker, and frequently terminating in a sharp 

 point; tarfjial palette forming a long square, and composed of the 

 three first joints(3). 



The last of the Patellimani, or those which constitute the second 

 general division, have their head suddenly narrowed behind the eyes, 

 and as if distinguished from the thorax by a sort of neck or pedicle. 

 It is frequently small, with very protuberant eyes. In several, the 

 ligula is short and projects but little beyond the emargination of the 

 mentum. 



Here, the emargination is edentate; the mandibles are tolerably 

 stout, and the labrum is strongly emarginate and almost bilobate. 

 Such is the 



(1) See Dej. Spec. II, 283. [They are the Die. chalybseus, alternans, furvus [D. 

 elongatus, Say), simplex and politus all, I believe, that have as yet been ascer- 

 tained. Am. Ed.] 



(2) Ca/abus agricola, Oliv., Col. Ill, 35, V, 53; C. silphoides, Fab.; Sturm, III, 

 Ixxiv, a; C. emarginatus, Oliv., lb., XIII, 150 Carabus cassideus, Fab.; C. de- 

 pressus, Payk. ; Sturm, lb , LXXIV, o, O; C. Hoffmanseggii, Panz., Faun. Insect. 



Germ., LXXXIX, 5. See Spec. Dej. II, p. 405411. 



(3) Carabus bipustulatus, Fab.; Clairv., Entom. Helv. II, xiii; C. peltatus, 

 Mig.; Panz. lb. XXXVII, 20. See Spec, Dej., II, p. 405411. 



