482 



COLEOPTERA. 



joint of the antennae cylindrical, while that of Calosoma is 

 greatly compressed. (7. serratus Say (Fig. 363 ; a, pupa of the 

 European C. auronitens) 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 striatet 

 elytra. (We figure some unknown larva? of thi? 

 fa mi I}" 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. 36*. 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 rig .305. 



the anterior toothed palmate tibiae more 

 or less produced at the apex, with a 

 pedunculate abdomen. In Scar- 

 ites and Pasimachus the basal 

 joint of the antenna is verj r long ; 

 the former having the maxilla* 

 rounded at the tip, and the tho- 

 rax rounded behind, while in 

 Pasimachus, the thorax is dis- 

 tinctly angulated, and the max- 

 illae are hooked. In Clivina the basal joint of the an- 

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

 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 coxa 1 . Of this 

 group Itriii-Jiiiiiix (15. finnans Fabr. Fig. 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 



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