new or Uttle-hwwn Tipulidfe. 171 



stigma ; conspicuous raacrotrichise in cells 7?2 to %id Mg, 

 most numerous in cell R„ where they include about the 

 outer half of the cell. Venation : Rs very short, almost 

 transverse, about equal to r-m ; distal section of 7?j 

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

 than the petiole of cell 2nd M-2', fusion of Cui 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 

 buttresses.'' 



Xenotipula, gen. nov. 



Frontal prolongation of the head short and stout ; no 

 nasus. Antennae very short in both sexes, composed of 18 

 segments, the first flagellar segment conspicuously enlarged, 

 siiboval, narrow at the base, provided with 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; tibire with two conspicuous curved 

 spurs. Wings with Sc^ atrophied ; tip of R2 atrophied or 

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

 margin. Wings of the female smaller than those of the 

 male. Male hypopygium 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). 



Xenotipula is a very peculiar genus of Tipuline crane-flies. 

 Together with Idiotipula, 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 

 IdiotijJula by the tibial spurs, the very short antenna? in both 

 sexes, the lack of vein Scy, 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. 



