176 PHYTOPHAGA. 



5. Myochrous albovillosus. 



Ovate, subcylindrical, narrowed behind ; blaek, thickly covered with white pubescence ; tibiae obscure rufous ; 

 sides of the thorax without teeth ; elytra obscure aeneous, finely punctate-striate, closely covered with 

 whitish scales, each elytron with about seven white thickly-scaled spots. 



Length 1 line. 



Antennas not longer than the thorax, obscure piceous ; thorax cylindrical, about as broad as long ; the sides 

 entire, finely serrate ; upper surface closely covered with yellowish and white scales, the latter forming a 

 narrow central and two broader lateral longitudinal bands ; scutellum small, triangular ; elytra convex 

 and distinctly narrowed posteriorly, covered with scales like the thorax, the white ones forming about 

 seven more or less distinct spots, of which two, more plainly marked, are situated behind the middle in a 

 transverse line ; tibiae straight, unarmed. 



Hob. Mexico (Pilate, coll. Baly, coll. Jacoly). 



Of this minute but very distinct species 1 find a specimen contained in the collection 

 of Mr. Baly ; another is in my own. 



GLYPTOSCELIS. 



Glyptoscelis, Chevrolat, Dej. Cat. 3rd ed. p. 438 ; Leconte, Proc. Acad. Phil. 1859, p. 81. 



Glyptoscelis may be at once distinguished from Myochrous, with which it has the 

 general appearance and its pubescence in common, by the bifid claws and the absence 

 of the teeth at the sides of the thorax, this latter character being, however, sometimes 

 absent also in Myochrous. No species of Glyptoscelis has, up till now, been described 

 from Central America, North and South America having been the only recorded loca- 

 lities. Three species from the former country have now come to my knowledge. 



l. Glyptoscelis chontalensis. 



Elongate, parallel, subcylindrical, piceous below ; antenna? and legs obscure fulvous ; above dark aeneous, 

 covered with long white pubescence ; thorax with a central ridge ; elytra finely and irregularly 

 punctured. 



Length 4 lines. 



Head broader than long, finely and closely punctured, covered with long white hairs ; eyes emarginate in front 

 of the antennae, the latter extending to one third the length of the elytra, robust, fulvous ; thorax trans- 

 verse, the posterior margin very rounded and produced at the middle ; sides much deflexed when viewed 

 from above, and distinctly constricted near the base ; surface finely and closely punctured, with a distinct 

 central slightly raised ridge from the apex to the base, and covered, like the head, with long white 

 pubescence, which is placed transversely at each side of the ridge ; scutellum transverse, subquadrate ; 

 elytra moderately convex, the apex very acute and produced into sharp points ; disk more strongly 

 punctured than the thorax, metallic aeneous, but covered everywhere with thin and long white hairs. 

 Underside and legs thickly covered with white pubescence. 



Hah. Nicaragua, Chon tales (Belt). 



The seneous colour of the upper surface, in connexion with the central ridge of the 

 thorax, separates this species (of which two specimens were obtained by Belt) from 

 several of its allies, otherwise closely allied to it. 



