134 PHYTOPHAGA. 



10. Promecosoma jucimdum. 



Promecosoma jucundum, Lefevre, Ann. Soc. Ent. France, 1877, p. 131 1 . 

 Hah. Mexico x . 



11. Promecosoma inflatum. (Tab. VIII. fig. 9.) 



Promecosoma inflatum, Lefevre, Ann. Soc. Ent. France, 1877, p. 132. 

 Hah. Mexico, Cuernavaca (Salle). 



The red thorax and the peculiar shape of the insect before us, which is greatly 

 widened towards the middle of the elytra, will help to distinguish it; this latter 

 character, however, is scarcely recognizable in a smaller specimen before me, which is 

 much more parallel than the others. 



12. Promecosoma dilatatum. (Tab. VIII. fig. 10.) 



Promecosoma dilatatum, Lefevre, Ann. Soc. Ent. France, 1877, p. 133. 

 Hob. Mexico, Guanajuato (Luges, coll. Salle). 



A great many specimens of this species are contained in M. Salle's collection, having 

 been all obtained in the above locality. The species is a very distinct one, on account 

 of its short posteriorly widened shape and the uniform metallic-green colour of its 

 upperside. 



13. Promecosoma chrysis. 



Promecosoma chrysis, Lefevre, Ann. Soc. Ent. France, 1877, p. 133 \ 

 Hah. Mexico 1 , Guanajuato (Luges, coll. Salle). 



In shape this species resembles exactly P. inflatum and P. dilatatum, from both of 

 which but slight differences separate it ; and, in my opinion, the species in question are 

 identical. Neither size nor colour seem to be constant in these insects ; and the same 

 applies to the sculpturing of the elytra and thorax. 



14. Promecosoma fervidum. (Tab. VIII. fig. 11.) 



Promecosoma fervidum, Lefevre, Ann. Soc. Ent. France, 1877, p. 134 \ 

 Hah. Mexico, Guanajuato * (Luges, coll. Salle). 



The only species with which the present one might be confounded is P. disbar, from 

 which, however, it is separated by the much more transverse thorax and the semipunc- 

 tate-striate elytra ; the latter, besides these differences, end also in an acute point or 

 tooth. 



15. Promecosoma lepidum. (Tab. vni. fig. 13.) 



Promecosoma lepidum, Lefevre, Ann. Soc. Ent. France, 1877, p. 134 1 . 

 Hah. Mexico, Panistlahuca 1 (Salle). 



