24 PHTTOPHAGA. 



The remarks made in regard to M. phaleratus apply to the present species. Mr. 

 Baly has rightly described it as belonging to Mastostethus, but described the elytra 

 as being indistinctly pubescent, on account of which it is included in Gemminger's 

 Catalogue under the genus Agathomerus. Except at the head and near the extreme 

 lateral margins of the elytra, I am quite unable to discover any hair. 



22. Mastostethus nigrofasciatus. (Tab. II. fig. 25.) 



Elongate, parallel, fulvous ; antennae, a spot at the vertex, two at the thorax, scutellum, a transverse band 

 across the elytra, and the base of the femora black. 



Length 4£ lines. 



Head distinctly punctured in front of the eyes ; mandibulae and a longitudinal mark at the vertex black ; 

 thorax with all the angles acute, the posterior margin cut obliquely at each side; surface scarcely 

 visibly punctate even with a strong lens, fulvous, a spot at each side on the disk black ; scutellum of the 

 same colour ; elytra subdepressed, parallel, distinctly but not closely punctured, fulvous, with a perfectly 

 straight narrow band from one side across the middle of the disk to the other, and extending to the 

 lateral margins, black ; underside and the legs also fulvous ; a spot at the sides of the anterior coxae, 

 another at the mesothorax, the base of the femora and the apex of the tibiae, together with the tarsi, 

 black. 



Eab. Guatemala, Sabo, Vera Paz (Champion). 



The only species the present one somewhat resembles is M. zonatus, Klug ; it is, how- 

 ever, perfectly distinct from the latter, as the head is fulvous, the antennae entirely 

 black, and other differences in colour show themselves in the present species. 



AGATHOMERUS. 



Agathomerus, Lacordaire, Mem. Liege, iii. p. 673 (1845). 



The insects belonging to this genus are distinguished from those of the preceding in 

 having the metasternum of normal shape and not produced and compressed ; the elytra 

 are more or less pubescent. Five species are known from Central America ; the others, 

 amounting to thirty, are inhabitants of South America. 



1. Agathomerus pulcher. 



Agathomerus pulcher, Lacord. Mon. p. 675. 

 Eab. Mexico. 



2. Agathomerus rufas. 



Megalopus rufus, Klug, Jahrb. Ins. p. 213 ; Lacord. Mon. p. 694. 

 Megalopus lateritius, Dej. Cat. 3rd ed. p. 384. 



Eab. Mexico. 



3. Agathomerus dubiosus. 



Agathomerus dubiosus, Jacoby, P. Z. S. 1876, p. 808. 



Eab. Mexico. 



