CHRYSOMELID BEETLES, CHLAMISIXAE — MONROS 



459 



Pronotum. — Of triangular shape, viewed from above, with its vertex 

 broadly rounded ; central raised area hemispherical, with a longitudinal 

 low and broad groove, limited on both sides by an almost indistinct 

 ridge; seen from tliis side the notal profile nearly semicircular, with its 

 most elevated portion somewhat corroded; its surface covered with 

 relatively deep chcular punctures, deeper and more confluent in the 

 raised central portion so that the surface seems to be somewhat 

 corroded. 



Scutellum. — Alinute, somewhat concave, shagreened. 



Elytra. — Narrower than the abdomen, which is partly visible 

 laterally; basal margin with minute teeth, the sutural margin feebly 

 toothed in the posterior half and without teeth in the anterior half; 

 elytral surface covered with fine, confused, circular punctures and 

 with the ridges which are peculiar to this group of species arranged as 

 shown in figure 88, a, and feebly developed. 



Figure 88. — Chlamisus rogaguanus, new species: a, Dorsal view, left side, indicating color 

 pattern, right side, showing microsculpture and irregularities; h, lateral aspect. 



Head. — Plain, covered with large but feebly impressed punctures 

 uniformly dense over the whole surface; antennae with second and 

 third joints short and opposite each other, distinctly saw-edged from 

 the fourth joint. 



Prosternum. — Rectangularly transverse on the anterior half, with a 

 laminar prolongation in the posterior half; anterior margin somewhat 

 concave. 



Legs. — Moderately long and slender; the last tarsal joint raised 

 one-half above the lobes of the third. 



Abdomen. — Sides of the first A^isible segment without lateral tubercle; 

 pygitlium feebly convex, superficially corroded and with traces of a 



