PEOMECOSOMA. 133 



5. Promecosoma cinctipenne. (Tab. VIII. fig. 6.) 



Promecosoma cinctipenne, Lefevre, Ann. Soc. Ent. France, 1877, p. 129 \ 

 Hab. Mexico 1 {Salle). 



M. Lefevre's single type specimen is contained in M. Salle's collection, as well as 

 representatives of all the species of this genus. The present insect is distinguished 

 by the rufous margin and apex of the elytra, as well as by the deep punctuation and 

 coarse transverse rugosities of the latter. 



6. Promecosoma elegantulum. 



Promecosoma elegantulum, Lefevre, Ann. Soc. Ent. France, 1877, p. 130. 

 Sab. Mexico, Guanajuato (Duges, coll. Salle). 



Except in the colour of the underside, which is piceous, and the smaller size of the 

 present species, the latter does not differ, in my opinion, sufficiently from P. cinctipenne 

 to justify its separation ; but more specimens are necessary to form a decisive opinion. 



7. Promecosoma sallsei. (Tab. VIII. fig. 7.) 



Promecosoma sallei, Lefevre, Ann. Soc. Ent. France, 1877, p. 130. 

 Hab. Mexico, Michoacan [JDuges, coll. Salle). 



The metallic-green upperside, interrupted by a sutural and marginal band of fulvous, 

 distinguishes well the present species from all others. 



8. Promecosoma sanguinolentum. 



Promecosoma sanguinolentum, Lefevre, Ann. Soc. Ent. France, 1877, p. 131 \ 

 Cacoscelis sanguinolenta, Sturm, Catal. MS. 



Hob. Mexico 1 (SallS). 



Again closely allied to P. sallcei, but differing in the rufous thorax and coarser punc- 

 tuation of the latter, as well as the stronger rugosities of the elytra. The typical 

 specimen from M. Salle's collection was formerly in Sturm's possession under the 

 above manuscript name. 



9. Promecosoma dugesi. (Tab. VIII. fig. 8.) 



Promecosoma dugesi, Lefevre, Ann. Soc. Ent. France, 1877, p. 131. 

 Hab. Mexico, Guanajuato (DugSs, coll. Salle). 



Of this species three specimens are contained in M. Salle's collection. The colour of 

 the upperside is dark .metallic green or blue ; the head and thorax are very rugose; and 

 the elytra have the apex of a rufous colour. From P. abdominale the species may be 

 distinguished by the shorter shape and much broader thorax. 



