2 PROCEEDINGS OF THE NATIONAL MUSEUM. v<.r,. ci 



close relationship to Chrysoplatycerus and Taftia in the long curved 

 stigmal vein, while Blepyi^s is closely allied through Ghalcaspis by 

 the general habitus. All of these genera except Blepyrus, Ghalcaspis^ 

 and Aenasius have a deep semicircular scrobal impression, and there 

 is a slight indication of the same structure in Aenasius. It is inter- 

 esting to note that all of these genera except Taftia and Blepyrus 

 probably originated in America, but other allied genera must occur 

 elsewhere, and I have, in fact, seen a representative of a new genus 

 from South Africa similar to Chrysoplatycerus except in lacking 

 the fascicle of hairs at the apex of the scutellum. 



Genus CHRYSOPLATYCERUS Ashmead. 



RUcya Howard (J. B. Smith's ab.stract). Entoui. Amer.. vol. 4, p. 80, July, 



1888, not Rileya Ashmead, 1888, which has a few days priority). 

 Chrysoplatycerus Ashmead, Camid. Entom., vol. 21. p. 37, 1889. 



The female generic characters are well known, but the male, which 

 has but few characters in common with the female, needs to be de- 

 scribed. 



Generic characters of male. — Head rather thin fronto-occipitall3\ 

 the face abruptly inflexed ; the dorsal surface strongly rounded from 

 side to side, and more or less inclined obliquely forward; fronto- 

 vertex broad, as wide as long or wider, the ocelli arranged nearly in 

 a right-angled triangle, the posterior pair almost touching both the 

 eye and occipital margins; eyes moderately large, very finely pubes- 

 cent, strongly convex and rounded in outline, with the posterior 

 margin stronglj^ flattened off ; in frontal view the head is well rounded 

 above but somewhat triangular below the eyes, as the cheeks con- 

 verge strongly toward the narrow mouth, or sometimes after shrink- 

 age the head appears almost circular in outline; face distinctly wider 

 than long, the angulation between it and the frons not carinated as 

 in the female but similar in shape, forming a semicircle and running 

 outward to the lateral margin of the head, not distinctly below or 

 anterior to the eyes as in the female but touching their anterior 

 margins; face below the angulation not so deeply impressed as in 

 the female to form the scrobes; prominence between the antennae 

 convex, its upper margin triangular : cheeks as long as the greatest 

 diameter of the eyes. 



Antennae inserted moderately far apart, a little above the oral 

 margin, their sockets being situated a little closer together than the 

 distance from either to the nearest point of the eyes, and nearly twice 

 as far apart as the distance from either to the nearest point of the 

 oral margin; scape short, cylindrical, reaching only to the angula- 

 tion between the face and frons, together with the radicle joint about 

 as long as the pedicel and first two f unicle joints combined ; pedicel 



