neio or Uttle-hioion Tipulidse. 171 



stigma ; couspicuous raacrotrichife in cells R.^ to 2nd Mo, 

 most numerous in cell R^ where they include about the 

 outer half of the cell, Veuatiou : Rs very short, almost 

 transverse, about equal to r-m ; distal section of R, 

 obliterated ; petiole of cell Mi subequal to or a little longer 

 than the petiole of cell 2nd M^; fusion of Cuy and M about 

 four-fifths of the basal deflection of Cui. 



Abdomen dark brown, the tergites with a conspicuous 

 pale yellow lateral area beyond mid-length of the sclerite. 



Hab. Uganda. 



Holotype, ? , Mabira Forest, Kyagwe Country, altitude 

 4000 feet, August 12, 1920 {R. A. Dummer). 



" Bobbing up and down on a tree-trunk between the 

 l)iittresses.'' 



Xenotipula, gen. nov. 



Frontal prolongation of tlie head short and stout ; no 

 nasus. Aiitennte very short in both sexes, composed of lo 

 segments, tlie first flagellar segment cons})icuously enlarged, 

 suboval, narrow at the base, provided witb a few scattered 

 bristles ; remaining flagellar segments small, irregularly 

 cylindrical, the terminal three segments closely approximated. 

 Palpi of moderate length, the terminal segment a little 

 shorter than the third. Legs of the male much longer than 

 those of the female ; tibise with two conspicuous curved 

 spurs. Wings with Sc^ atrophied ; tip of 7^2 atrophied or 

 nearly so; but two branches of media reaching the wing- 

 margin. Wings of the female smaller than those of the 

 male. Male hypo|)yginm of simple structure, the pleural 

 appendages spinose posteriorly at the base. Ovipositor with 

 the valves short and fleshy. 



Genotype. — Xenotipula munroi,^^. n. (Southern Ethiopian 

 Region). 



Xenot'tpula is a very peculiar genus of Tipuline crane-flies. 

 Together with Idiutipula, Alexander (Natal), and Pseudolepto- 

 tarsus, Alexander (Australia), the genus is readily told from 

 all other members of the subfamily Tipulinse by the presence 

 of only two branches of media. Xenotipula is told from 

 Idiutipula by the tibial spurs, the very short antennoe in both 

 sexes, the lack of vein Sci, and the fleshy ovipositor. The 

 curious discrepancy in the size of the two sexes is discussed 

 in the collector's field-notes following the specific description. 



