22 PHYTOPHAGA. 



Hab. Guatemala, Purula (Champion). 



This species is not unlike M. rubricoUis, but is broader and distinguished by the 

 fulvous head, the colour of the tibise, and the shape of the elytral bands, the middle 

 one of the present species being more straight and not obliquely cut, as is the case with 

 M. Tubricollis ; the underside also in the latter insect differs in colour. 



12. Mastostethus stalii. 



Mastostethus stalii, Baly, Journ. Ent. i. p. 282, t. 13. f. 4. 

 Eab. Mexico. 



In the type before me, as well as in the specimen in my collection, the thorax is 

 very finely punctate, the punctures being visible only under a strong lens, while the 

 punctuation of the elytra is very distinct. 



13. Mastostethus vicinus. 



Mastostethus vicinus, Lacord. Mon. p. 660. 

 Eab. Mexico. 



The shape of the elytral bands principally distinguishes this species from the 

 preceding one. 



14. Mastostethus rogersi. (Tab. I. fig. 23.) 



Head dark rufous, distantly punctured at the base, more closely round the inner margin of the eyes ; antennas 

 black, the base and underside of the first joint rufous ; thorax coloured like the head, very remotely 

 punctate ; elytra slightly narrowed behind, distinctly and rather closely punctate, testaceous, a triangular 

 patch at the base of elytron, and a broad band behind the middle, the anterior margin of which is 

 straight, the posterior one bilobed, black ; breast and sides of the tibiae piceous ; all other parts below 

 rufous ; posterior femora with a distinct triangular tooth. 



Length 4 lines. 



Hab. Costa Eica, Cache (Bogers). 



15. Mastostethus chontalensis. (Tab. I. fig. 21.) 



Testaceous ; base of the head, a transverse band at the thorax, two others on the elytra (one at the base, 

 the other below the middle), and the breast and tibiae black. 



Length 4| lines. 



Head rather closely punctured round the eyes, black from the base to the middle of the eyes, lower part of 

 face testaceous ; antennae black, sides of the apical joints testaceous ; thorax with a few punctures at the 

 disk, testaceous, a broad transverse black band occupies the surface without extending to either margin ; 

 this band is distinctly narrowed in the middle, each end being widened posteriorly as well ; scutellum 

 black; elytra very remotely but rather deeply punctate, more finely so towards the apex, their marking 

 being identical with those of rogersi, but the basal band is wider and the posterior one perfectly straight 

 and not bilobed at its hind margin ; underside and the femora testaceous ; breast and tibiae black. 



Eab. Nicaragua, Chontales (Belt). 



