118 INSECUTOR INSCm/E MENSTRUUS 



Female : Length, 1 . 1 mm. Antennae very short, dark brown ; eight 

 segments, the second somewhat enlarged, subglobose, the others sessile, 

 subcylindric, the fifth with a length one-fourth greater than its diameter and 

 near the middle a sparse whorl of long, stout, simple setae ; terminal seg- 

 ment with a length two to two and one-half times its diameter, evidently 

 composed of two or three closely fused units and tapering to a narrowly 

 rounded apex. Palpi : First segment irregular, the second with a length 

 about two and one-half times its diameter, the third as long as the second, 

 more slender, the fourth one-third longer than the second, greatly dilated. 

 Mesonotum dark brown, almost black. Scutellum and postscutellum 

 shining dark brown. Abdomen dark brown. Wings hyaline, subcosta 

 uniting with the anterior margin just beyond the basal half, the third vein 

 at the distal fourth, the fourth vein rudimentary, forked, posterior branch 

 a nearly straight continuation, the anterior strongly curved, S-shaped ; fifth 

 vein simple, uniting with the posterior margin at the disteJ fifth, the sixth 

 at the basal third. Halteres fuscous yellowish basally, fuscous apically. 

 Coxae and femora fuscous yellowish, tibiae and tarsi dark brown ; claws 

 slender, evenly curved, minutely denticulate basally, the pulvilli nearly as 

 long as the claws. Ovipositor short, terminal lobes triarticulate, the distal 

 segment roundly ovate and rather thickly setose. Type Cecid 1557. 



KLonisomyia, new genus. 



The unique form described below has the general appearance of 

 Campylom^za, though the forked rudimentary fourth vein compels its 

 reference to the Lestreminariae. It is easily recognized by the large, 

 rounded wings, the absence of a cross vein, and the proximity of the 

 third vein to the basal portion of subcosta. The type is K. fusca, new 

 species. 



Konisomyia fusca, new species. 



This remarkable fly was taken in the office June 2, 1914, nothing 

 being known concerning its habits or life history. The most striking 

 peculiarities have been outlined in the generic diagnosis. 



Female : Length, 2 mm. Antennae hardly extending to the base of 

 the abdomen, sparsely haired, dark brown ; eight segments, the second 

 globose, slightly enlarged, the fifth sessile, subcylindric, with a length about 

 equal to its diameter ; subbasally there is a sparse whorl of stout setae 

 and near the middle a scattering whorl of finer hairs ; terminal segment 

 compound, evidently composed of three segments and with a length 



