ClASS V. INSECTA. 155 



Stirps 16. — Palpt short, filiform, the fourth joint truncate, with the 

 tooth of its notch acute : mandibles without teeth : thorax transverse : 

 bod^ depressed, broad : zcings two : neck none : luhrum entire. 



Genus 48. LAMPRTAS. BonelU, Panz. Echimuthus. Leach. 



Tarsi with their fourth joint simple : antenna; linear : ixings sliort. 



Sp. 1. Lam. cyanocephala. Intense blue-green; first joint of the an- 

 tennae, thorax, thighs, and tibiae red; elytra with punctured stria, 

 the spaces between the striae punctured ; knees black. 



Carabus cyanocephalus. Linni, Sc/ionher. Echimuthus cyanocephalus. 

 Leach. 



Inhabits Europe : is very rare in Britain, where it was first discovered 

 by Dr. Leach. 



Sp. 2. Lam. chlorocephala. Intense green ; the three first joints of the 

 antenna;, thorax, and legs red ; elytra with punctured stria;, the 

 spaces between the stris very obsoletely and irregularly punctu- 

 lated ; tarsi black. 



Carabus cyanocephalus. Mnrxliani. 



Inhabits the broom and imder tlie bark of trees. It is very abundant 

 occasionally in Coombe Wood, near London, and is not uncommon 

 in other parts of Britain : — it has been considered as L, cyanocephala 

 by all British collectors. 



Genus 49. LEBTA. Ljttr., BonelU, Panz., Leach. 

 Tarsi with their fourth joint bifid : antenna more slender at their bcise : 



Tvings long. The palpi of this genus are scarcely truncate. 

 Sp. 1. Leb. Crux-minor. 

 Carabus Crux-minor. Linni. 

 Inhabits Europe : in Britain it is very rare. 



Stirps 17. — I'alpi short, filiform : lip with the tooth of its notch 

 acute : mandibles dentated at their bases : palpi vvith their fourth 

 joints scarcely truncated: thoi-ax with subequal diameters, or longer 

 than broad : body depressed, flat, narrow : wings two ; labrum emar- 

 ginate. 



Genus 50. DROMIUS. BonelU, Leach. 

 Tarsi with their fourth joint simple : head not remarkably produced 

 behind : thorax obcordate, margined flat, a little broader than long, 

 Sp. 1. Dro. quadrimaculatus, 

 Lebia 4-maculata, Latr. 

 Inhabits beneath the bark of trees during the winter months. 



Genus 51. DEMETRTAS. BonelU. Risopiiilus. Leach. 

 Tarsi with the fourth joints bifid : head behind very much produced : 

 thorax rather longer than broad, obcordate, margined, narrower than 

 the head, 



