On new or little-known Tipulidpe. 161 



XV. — New or little-known Tipulidse (Diptera). — V. Ethiopian 

 Species. By Charles P. Alexander, Ph.D., Urbana, 

 Illinois, U.S.A. 



The present paper is a continuation of the preceding parts 

 under this title. Theholotypes are preserved in the writer's 

 collection, except where noted to the contrary. 



Dicranomyia {Thrypticomtjia) nigeriensis, sp. n. 



General coloration brown, the mesonotum reddish brown ; 

 pleura testaceous; legs with the metatarsi entirely white ; 

 wings pale brownish subhyaline; stigma elongate, dark 

 brown ; Sc^ ending opposite the origin of Rs. 



Male. — Length 6 mm.; wing 7-7-2 mm. 



Female. — Length 6 mm. ; wing 6"8 mm. 



Rostrum pale brown ; palpi dark brown. Antennee dark 

 brown. Head dark brown, grey pruinose. 



Mesonotum reddish brown. Pleura testaceous. Halteres 

 very elongate, dark brown. Legs with the coxse and 

 trochanters testaceous ; femora dark brown, paler basally ; 

 tibi?e dark brown ; tarsi pure white, the terminal segments 

 scarcely darkened. Wings pale brownish subhyaline ; 

 stigma elongate, dark brown ; veins dark brown. Venation : 

 Scx ending opposite the origin of Rs, Sco a short distance 

 from the tip, Sci about equal to the basal deflection of Cui ; 

 penultimate section of Ri from one and one-half to twice r ; 

 basal deflection of R^^^ strongly arcuated ; in some speci- 

 mens the inner end of cell 1st Mo is strongly arcuated, less 

 so in other specimens ; basal deflection of Cui beyond mid- 

 length of cell 1st Mi. 



Abdomen dark brown. 



Hab. Nigeria. 



Holotype, S , Eftbn Forest, November 10, 1920 {A. W. J. 

 Fomeroy). 



Allutopotype, ? . 



Faratopotypes, 2 (^ 's. 



Holotype in the collection of the British INluseum 

 (Natural History). 



Dicranomyia nigeriensis is related to D. seychcllensis 

 (Edwards), from which it differs in the uniformly white tarsi, 

 ihe elongate halteres, and the details of the wing-venation. 

 The known species of the subgenus Thrypliconiyta occur 

 iu the Ethiopian Region (2), Palasarctic Region, Japan (1), 

 Oriental Region (2), and the Australian Region (4). 



Ann.d: Mag. N. Hist. Ser. 9. Vol. \'\n. 11 



