404 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 39. 



brownish in part; third dorsal segment completely fused with the 

 second medially, its striae extending nearer the posterior edge medially 

 than laterally, striate portion of doreal segments mostly brownish and 

 dull, rest of dorsal segments polished and rather testaceous. 



Male. — Similar to the female. Stigma in hind wings black. 



Type-locality. — Wilmington, Ohio. 



Type.— Cat. No. 13343, U.S.N.M. 



The types bear the legends W. J. Phillips, collector, Webster, No. 

 6332, Mordellistena ustulata parasites 1910, and were received from 

 the Bureau of Entomology, U. S. Department of Agriculture. 



Genus HOROGENES Foerster. 



LIMNERIUM (HOROGENES) DISCOOCELLELLiE, new species. 



Female. — Length, 4 mm. Agrees fairly well with the description of 

 Limnerium jyarva Provancher, except as follows : The scape is brownish 

 to yellow beneath, the pedicel is partly pale, the mandibles, fore coxae, 

 fore and mid trochanters and tegulas are mostly yellow, mid coxae 

 mostly brown, hind tibiae yellow except for a subbasal and an apical 

 brown band, hind tarsi brown, more or less yellow at base, areolet 

 sessile. The middle areolation in L. discoocellellse consists of a basal 

 area and an areopetiolarea. 



Type-locality. — Washington, D. C, ''bred Sept. 30, 1907, Gelechia 

 discoocellellse, Chittenden No. 154"^, Chittenden collector. Bureau of 

 Entomology, Washington, D. C." 



Type.-— Cat. No. 13344, U.S.N.M. 



This species could also be referred to Angitia in Foerster's classi- 

 fication though there are no particulars given there as to the relative 

 lengths of the hind tarsal joints in that genus. 



Genus EXENTERUS Hartig. 

 Type. — Exenterus oriolus Hartig. 



EXENTERUS LOPHYRI, new species. 



Resembles Picroscopus as defined by Davis in wanting an areola. 



Female. — Length 11 mm. Head mostly black ornamented with 

 yellow as follows : Inner and outer orbital margin except above the 

 eyes, the inner orbital margin produced below the antennal fossae to 

 near the middle line which latter is black as is the margin of the face 

 adjoining the clypeus, the latter almost entirely yellow and nearly 

 punctureless and polished, mandibles yellow except at base and apex 

 where they are black, punctured, their punctures of unequal size and 

 in some cases as many as four or five puncture widths apart palpi 

 testaceous, the third and fifth joints of the m. p. subequal in length 

 with each at least one and one-half times as long as the fourth joint, 



