146 INSECUTOR INSCITI^ MENSTRUUS 



THREE UNDESCRIBED NEMATOCEROUS FLIES 

 FROM NEW ZEALAND 



(Diptera) 



By CHARLES P. ALEXANDER 



Two of the three species of Diptera described herewith were 

 sent to me by Messrs. Harris and Howes, to whom my sincere 

 thanks are extended. The types are preserved in the writer's 

 collection. 



Family RHYPHIDAE 

 Trichocera obtusicornis, new species. 



Male. — Length about 2.5 mm. ; wing 3 mm. 



Female. — Length 2.5-2.8 mm. ; wing 3.4-3.7 mm. 



Generally similar to T. maori Alexander, differing as follows : 



Size smaller. General coloration (in alcoholic specimens) 

 much paler brown, the pleura pale brownish testaceous. Wings 

 pale brown, the stigma lacking. Venation : Sc2 opposite about 

 one-third to one-fourth the length of Rs; m faint, much 

 shorter than the petiole of cell M^. Male hypopygium with the 

 pleural appendages less elongate. Gonapophyses smooth. Penis- 

 guard terminating in obtuse horns, the apex of each with a 

 very shallow incision. 



Habitat. — New Zealand (North Island). 



Holotype, $ , Ohakune, altitude 2,060 feet, July, 1921 (T. R. 

 Harris). 



Allotopotypc, 9 . 



Paratopotypes, 3 $ 's. 



Trichocera lobifera, new species. 



Male. — Length 3 mm. ; wing 3.3 mm. 



Female. — Length 3.3 mm.; wing 3.5 mm. 



General coloration of alcoholic material pale brownish yel- 

 low. Antennae of the female but little shorter than those of 

 the male. Wings tinged with yellowish grey; stigma faint. 

 Male hypopygium with the pleural appendage elongate, on the 

 mesal face at from one-third to one-fourth the length a con- 

 spicuous, glabrous perpendicular lobule; mesal face of ap- 

 pendage distad of this lobule with abundant short setae. 



