432 



COLEOPTERA. 



joint of the antennae cylindrical, Avhile that of Calosoma is 

 greatly compressed. C. serratus Say (Fig. 363 ; o, pupa of the 

 European C. aurouitens) is black bordered with 

 purple. The closely allied species of Cychrus, of 

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

 the deeply bilobate labrum, and in having four of 

 the antennal joints smooth, with thickly striated 

 elytra. (We figure some unknown larvae of this 

 family which are allied to 

 Carabus ; Fig. 364, natural 

 size ; Fig. 365, a little en- 

 larged ; a, mouth parts ; 6, 

 end of the body, and Fig. 

 366, a larva apparently of the 

 Fig. 364. same genus.) Pasimachus 

 elongatus Lee. (Fig. 367) has been 

 found, according to Walsh, to prey on 

 the Doryphora, or Potato beetle. 



The genus Scarites and its allies have 



the anterior toothed palmate tibise more 

 or less produced at the apex, with a 

 pedunculate abdomen. In Scar- 

 ites and Pasimaclms the basal 

 joint of the antenna is very long ; 

 the former having the maxillae 

 rounded at the tip, and the tho- 

 rax rounded behind, while in 

 Pasimachus, the thorax is dis- 

 tinctly angulated, and the max- 

 In Clivina the basal joint of the an- 

 tennae is short, the mandibles flat and acute, and the clj'peus 

 is not emarginate. 



In Harpalus and allies the epimera of the mesotho- 

 rax do not extend to the coxae, and the mesosternum 

 is large, widely separating the middle coxae. Of this 

 group Bracliinus (B. fumans Fabr. Fig. 368), the 

 Bombardier beetle, with its narrow head and cordate 

 _ 368. prothorax, is remarkable for discharging with quite 

 an explosion from its anal glands a pungent fluid, probably 



Fig. 367. 



illae are hooked 



Fig. 366. 



