PHYTOPHAGOUS COLEOPTERA PROW PARAGUAY 189 



slightly produced at the middle, the elytra wider at the base 

 than the thorax, very finely punctured in closely approached 

 rows, the punctures nearly obsolete below the middle, legs fla- 

 vous, the posterior femora more or less piceous. 



15. Aphthona semistriata, sp. a. Pale fulvous, the apical 

 joints of the antennae piceous, thorax* transversely subquadrate, 

 microscopically punctured, elytra extremely finely punctate-stria te 

 at the anterior portion only, the lower part impunctate. 



Length 1 V 2 m ^- 



Head impunctate, fulvous, the frontal elevations broad and 

 distinct, the carina acutely raised, antennae robust, not extending 

 to the middle of the elytra , the second and following joints 

 short, nearly equal, the terminal ones distinctly thickened, 

 thorax about one half broader than long, the sides feebly rounded, 

 the anterior angle oblique, the surface scarcely perceptibly punc- 

 tured and only visible under a very strong lens; elytra wider 

 at the base than the thorax, ovate, the shoulders not prominent, 

 the base without depression , the disc with fine and distantly 

 placed rows of punctures which become obsolete below the mid- 

 dle, under side and legs pale fulvous, shining, posterior femora 

 strongly incrassate, the first joint of the posterior tarsi as long 

 as the following two joints together. 



A very small species of which a good many specimens arc 

 contained in this collection; it seems allied to A. fulvipennis, Jac. 

 troni Guatemala but is smaller, the antennae are shorter and the 

 elytra are only visibly punctate-striate at their anterior portion. 



10. Chaetocnema Boggianii, sp. n. — Below black, above 

 greenish aeneous, the basal joints of the antennae and the legs 

 (the posterior femora excepted) fiavous, head impunctate, thorax 

 extremely minutely punctured, elytra finely punctate-striate, the 

 interstices flat and impunctate. 



Length 2 mill. 



Head minutely granulate , entirely impunctate , obliquely 

 grooved between the eyes, antennae extending to about the 

 middle of the elytra , flavous , the apical three or four joints 

 piceous, distinctly thickened ; thorax twice as broad as long, the 



