l8o ENTOMOLOGICAL NEWS. [June, 'O2 



OPSEBIUS Costa. 



Wings with a prominent tooth ; anal cell widely open . agelenae sp. nov. 

 Costa nowheres projecting 2. 



2. Wings with a blackish tinge 3. 



Wings with a testaceous tinge 4. 



3. Anal cell open ; third posterior cell longer than the fourth. 



sulphuripes Loew. 

 Anal cell closed ; third posterior cell shorter than fourth. 



gagatinus Loew. 



4. Wings pale at base and tip diligens O. S. 



Wings unicolorous paucus O. S. 



7 Opsebius sulphuripes Loew. 



One specimen, Alameda Co., Calif. 



Although from a State so distant from the locality type (New 

 York), this specimen shows no important differences. The 

 antennae are piceous, however, the hind margin of the wing is 

 scarcely paler, and the anterior (smaller) cross-vein is oblique ; 

 but aside from these, the form seems to be identical with 

 L,oew's species. 



8. Opsebius agelenae sp. nov. tf. Length 6 mm. Of a shining semi- 

 metallic, bronzed, blackish brown ground color, densely clothed with 

 long fulvous pubescence, excepting (in the Texan form) the eyes, which 

 are clothed with black hairs. Antennae short, consisting of two minute 

 oval fuscous joints, the outer smaller, the terminal slender, fuscous arista 

 three times as long as the antenna. The hairs of the abdomen become a 



little sparser apically, but are 

 still uniformly fulvous. Tegulae 

 translucent hyaline, the narrow 

 margin testaceous. Halteres tes- 

 taceous. Coxse concolorous 

 with the body, legs uniformly 

 testaceous, the tips of the claws 

 black. Wings clear hyaline ; the 

 marginal and first submarginal 

 cells tinged with yellowish, veins 

 pale yellow ; the costa strongly 

 thickened, angulate at the mid- 

 dle of the marginal cell and 



there bearing a large blunt projection ; two submarginal cells and four 

 posterior cells, the first posterior cell divided in two beyond the discal 

 cell, but the position of the cross- vein inconstant ; anal cell of even breath 

 toward the tip, broadly open. 



