98 INSECUTOR INSCI'lIyiJ Mfi'KSTiiUUS 



Differs from Penta as follows : No ocellar bristles. Epistoma 

 full}'- as long as the clypeus. Cheeks quite equalling eye-height. 

 Proboscis much shorter, palpi less developed. Front less pro- 

 jected, head much shorter throughout. Antennae shorter, 



Eumicrophthalma shannoni, new species. 



Length of body, 0.5 mm. ; of wing, 5.5 mm. One female, 

 Eastern Branch, District of Columbia, October 22, 1914 (R. C, 

 Shannon). 



Black. Frontalia, first two antennal joints, and most of 

 cheeks and parafacials deep rufous ; palpi paler. Parafrontals, 

 mesoscutum, and scutellum cupreous-golden pollinose. Four 

 vittas on thorax, three others showing behind suture in some 

 lights. Abdomen rather shining, thinly silvery ; the polkn dense 

 on narrow bases of last three segments, and in a narrow median 

 vitta. Eegs black, tibise brownish-rufous. Wings lightly in- 

 fuscate. Tegulge whitish. 



Holotype, No. 19619, U. S. Nat. Mus. 



Named in honor of Mr. Raymond C. Shannon. 



Elephantocera^ new genus. 



Genotype, Blephantocera greenei Townsend, new species. 



Differs from Calpodomyia as follows : Male. Front promi- 

 nently produced in profile ; eyes large but not descending as 

 low as vibrissse ; cheeks very short but of good width, nearly 

 twice as wide as length of second antennal joint. Front almost 

 equilateral, vertex but little less than eye-width ; face con- 

 siderably widened, much wider below than one eye ; facial 

 carina broadened and rounded, not conspicuous below ; oral 

 margin broad, subarcuate, about even with vibrissal insertion. 

 Third antennal joint greatly enlarged, much broadened, rather 

 thick-phylliform, suggestive of that of Phytomyptera, reaching 

 about as low as lower border of eyes, the broadening effected 

 by a prolongation of lower edge, about one and one-half times 

 as long as wide, oblong-rounded, straight on upper edge, evenly 

 rounded apically and on lower edge. Arista much longer than 

 third antennal joint, thickened on about basal half. Frontalia 

 narrower anteriorly than one parafrontal, widening posteriorly. 

 Facial profile not bulged, quite strongly receding, vibrissal axis 



