218 PR0CEEDIN08 OF THE NATIONAL MUSEUM. vol.57. 



postocellar line very little shorter than the ocellocular Ime; postocellar 

 area strongly convex, well defined laterall}'", almost completely parted 

 by a medium furrow; postocellar furrow nearly v/anting; antennae 

 rather short, the third joint a trifle shorter than the fourth; head and 

 thorax shming, covered with long gray hair; posterior orbits straight; 

 second recurrent mterstitial or slightly beyond the second inter- 

 cubitus; third cubital cell short, its length subequal with the apical 

 width; stigma rounded below; reciirrentella interstitial with the 

 intercubitella; sheath broad, straight above, pointed apically, then 

 obliquely truncate. Black; clypeus, supraclypeal area, posterior 

 orbits obscurely, mesothorax almost entirely, venter, two apical 

 tergites and legs except infuscate bases of the coxae and femora, 

 rufopiceous; wings subhyaline, venation pale brown, costa and 

 stigma yellowish. 



PACHYNEMATUS DOULDEKENSIS, new species. 



This new specits belongs to group III of Alarlatt and rmis in his key 

 to paUidiventris (Cresson) but is to be distinguished from that species 

 by the smaller middle fovea and subequal third and fourth anten- 

 nal joints. In general appearance it is much like robustiformis 

 Kohwer which belongs to group II. 



Female. — Length, 6 mm.; length of anterior wing, 6 mm. An- 

 terior margin of the clypeus broadly arcuately cmarginate, the 

 lobes triangular and pointed apically; supraclypeal foveae, large, 

 deep, obliquely placed and oval in outline, connected with antennal 

 foveae; supraclypeal area broad, convex; middle fovea small well 

 defined, oval in outline; frontal crest fairly prominent and only 

 slightly broken; ocellar basin pentagonal in outline incompletely 

 defined below; antennal furrows complete, broad, shallow; posto- 

 cellar line slightly shorter than the ocellocular line; postocellar fur- 

 row feeble; postocellar area narrow, with a median impression; 

 temples receding; antennae but little shorter than body, slightly 

 tapering, the third and fourth joints subequal; head with scattered 

 setiguous punctures; thorax shining, practically impunctate; scutel- 

 lar appendage irregularly aciculate; second recurrent antefurcal by 

 nearly the length of second intercubitus ; stigma large, rounded 

 below, two and one-half times as long as broad; sheath straight 

 above, narrowly rounded apically and tapering to a broad base; 

 cerci long slender. Black, narrov/ apical margin of labriim, palpi, 

 narrow posterior, lateral margin of pronotum, tegulae and ventral 

 aspect of abdomen yellowish ; legs black, four anterior coxae beneath, 

 trochanters, apical part (broader dorsally) of anterior femora, dorsal 

 line on four posterior femora, four anterior tibiae and tarsi, basal 

 three-fourths of hind tibiae and base of hind basitarsis yellowish; 

 wings hyaline, iridescent; venation and stigma dark brown, costa 

 yellowish. 



