290 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



Described from one female and seven males. The type, allotype, 

 and paratypes a-d were reared from Acrohasis, species by A. I. Faois 

 the type, allotype, and paratype a under Quaintance No. 16787; 

 paratypes l-d from Pecan Bayou, under Quaintance Nos. 16926 (a) 

 and 16929 (c-d); paratype e from Glen E,ose, under Quaintance No. 

 16859; while paratype/ was reared by S. W. Bilsing from Acrohasis 

 caryaevorella at College Station. 



ORGILUS MACULIVENTRIS (Cresson).i 

 Eubadizon maculiventris Cresson, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 178. 



In Ashmead's key to the tribe Orgilini runs to Orgilus on the first 

 of the two characters under couplet 2 and to Oresimus on the other. 

 It is very closely allied to lateralis Cresson and Tcearfotti Ashmead. 

 From the former it differs in having the face very sparsely and weakly 

 punctate; the propodeum less densely punctate, the punctuation not 

 having the appearance of deep reticulation; the abdomen opaque 

 granulate but impunctate; the first tergite fully two-thirds as broad 

 at apex as long; the second tergite much broader at base than long 

 medially; in being entirely fermginous; and in having the ovipositor 

 as long as the bodj^ From Icearfotti, which is known only from the 

 unique type, it differs in the broader first and second tergites and in 

 the abdominal sculpture. 



Female. — Length, 4 mm. ; ovipositor, 4 mm. 



Face polished, sparsely, weakly punctate, a third wider than 

 greatest diameter of eye; thorax polished, mesoscutum obscurely, 

 sparsely punctate, densely and coarsely punctate at junction of 

 notauli; longitudinal furrow of mesopleurum strongly ^w -shaped, 

 weakly foveolate; propodeum opaque granulate at sides, coarsely 

 and rather densely punctate in middle; longer spur of hind tibia 

 more than half as long as basitarsus; first abscissa of radius much 

 shorter than intercubitus, second abscissa forming a distinct angle 

 with intercubitus; stub of third abscissa of cubitus very short; 

 nervulus postf ureal by half its length; subdiscoideus at basal third 

 of apical abscissa of discoideus; abdomen largely opaque granulate; 

 first tergite about two- thirds as wide at apex as long; second much 

 broader at base than long; ovipositor as long as body. 



Pale ferruginous; ocellar triangle black; legs stramineous, hind legs 

 slightly testaceous; apex of hind femur black; tibia fuscous, paler 

 in middle and with a broad white basal annulus, calcaria white; 

 tarsi black; wings hyaline. 



Host. — Acrohasis, species. 



One female, reared June 15, 1918, under Quaintance No. 16784 

 by A. I. Fabis, at Brownwood, Texas. 



I In the manuscript as originally submitted this species was described as new under another name from 

 a single female. The subsequent receipt of another female and a male from the same source proves it to 

 be Cresson's species. Since the sexes difler so markedly in color, the description is not withdrawn 



