15. 

 OMASEUS ATERUIMUS. 



Order Coleoptera. Fam. Carabidae Lat. 

 Type of the Genus Carabus aterrimus Fab. 



Omaseus Ziegler. Carabus Linn., Fab. Harpalus Lat. Poecillus 

 Bon. 



Antenn(E filiform, first joint the largest, cylindric, oblong, second 

 the smallest, third twice the lengtifi of the second, the following 

 hairy, of nearly equal length. (6.) 



Labriim nearly quadrate, straight at its base, rounded at its cor- 

 ners, emarginate and hairy in front. (1.) 



Mandibles arcuated, acute, with a small tooth or elevation about 

 the middle of the internal edge, and minute clefts near the 

 base. (2.) 



Maxillce considerably bent at the apex, strongly ciliated on the 

 internal edge, and externally towards the base, with 2 long hairs 

 on the horny edge : internal palpi 2-iointed : external 4-jointed, 

 first joint small and bent, second robust, twice the length of the 

 first, and curved the contrary way, third same length as second, 

 somewhat clavate, fourth shorter^ oval, truncate. (3.) 

 Mentum large, broad and .straight at its base, narrowed before, 

 sides very convex, deeply emarginate in front, with a bifid pro- 

 cess in the centre : /^rt/pJ3-jointe(l, first joint very small, second 

 long, rather uneven on its internal edge, third long, truncate : 

 labium projecting beyond the first joint of palpi, produced into 

 a spine on each side. (4.) 

 Thorax siibquadraie, transverse, slightlij rounded behind, v:itk an im- 

 pression on each side of its base. Abdomen elongate, ovate, robust. 

 Wings 2. Feet formed for running. Anterior tarsi with 3 dilated 

 joints. Anterior tibiae notched on their internal edge. (5.) 



Aterrimus Fab. Ent. Syst. ]. p. 15G. n. 141. 



Black, shining : 2 impressed lines on the forehead. Tliorax 

 broader than head, with a narrow slightly reflected margin, a 

 semi-circular line in front, from which a channel extends down the 

 centre. Elytra broader than thorax, striated, with 2 punctures 

 in the second stria from the suture, and another in the third, 

 nearer the base. 



In the Cabinets of Mr. Sparshall and the Author. 



This j^enus, proposed by Ziegler and adopted by Dejcan, has 

 not hitherto been published with any defined characters that 

 I am aware of: but as the species composing it do not associate 



