432 



COLEOPTERA. 



joint of the antennre cylindrical, while that of Calosoma is 

 greatly compressed. C. serratus Say (Fig. 3G3 ; a, pupa of the 

 European C. aui'onitens) is black bordered with 

 purple. The closely allied species of Cychrus^ of 

 rich purple and blue tints, differ in the longer head, 

 the deeply Inlobate labruni, and in having four of 

 the antennal joints smooth, with thickly striated 

 elyti'a. (We figure some unknown larva? of this 

 family which are allied to 

 Carabus ; Fig. 364, natural 

 size ; Fig. 3G5, a little en- 

 larged ; a, mouth parts ; 6, 

 end of the bod}^, and Fig. 

 3CG, a larva apparently of tiie 

 Fig. 304. same genus.) Pasimaclius 

 elongatus Lee. (Fig. 367) has been 

 found, according to Walsh, to prey on 

 the Dor^'phora, or Potato beetle. 



The genus Scarites and its allies have 



the anterior toothed palmate tibiae more 

 or less produced at the apex, with a 

 pedunculate abdomen. In Scar- ^ 

 Ues and Pasimaclius the basal 

 joint of the antenna is very long ; 

 the former having the maxilhie 

 rounded at the tip, and the tho- 

 rax rounded behind, while in 

 , Pasimachus, the thorax is dis- 

 ^'» *'^- tinctly angulated, and the max- W 



illjB are hooked. In Clivinn the basal joint of the an- ^'S- 3''^- 

 tenuie is short, the mandibles flat and acute, and the clypeus 

 is not emarginate. 



In Ilarpalns and allies the epimera of the mesotho- 

 rax do not extend to the coxfe, and the mesosternum 

 is large, widely separating the middle coxae. Of this 

 group Brachinns (B. fumans Fabr. Pig. 368), the 

 Bombardier beetle, with its narrow head and cordate 

 Fig. 368. prothorax, is remarkable for discharging with quite 

 an explosion from its anal glands a pungent fluid, probably 



