new or litilf-knoum Tipulidaj. 34:7 



% 



marnjin of the eye, tliese marks but narrowly separated by a 

 capillary meiliaii brown liiu*. 



Protliorax black. Mesotliorax black, the dorso-thoracic 

 membranes light sulphur-yellow. Ilalteres black, tlie tips 

 of the knobs conspicuously yellow. Legs with the coxae 

 and trociianters black; femora dark brown, the tips broadly 

 swollen and blackened, immediately before the eidargement 

 Avith a narrow yellow ring ; tibiie brown, the tips broadly 

 blackened ; tarsi dark brown, the base of the metatarsus 

 yellow, this broadest on the hind legs. Wings narrow, dark 

 brown ; base of the wing and two narrow cross-bauds pale, 

 the first of tliese cross-bands before the cord, the second 

 just bevoud the outer end of cell 1."^ M^. Venation : Sc 

 ending just before mid-length of Rs ; only the extreme bnse 

 of R-i preserved, and this in alignment with the subatrophied 

 r so as to appear as a single weak cross-vein ; r-in con- 

 necting -with Rs before its symmetrical fork; cell 1*/ A/j 

 loup; and narrow, broatiened outwardly, the basal deflection 

 of Cmi about at the fork of M. 



Abdomen black, iu the male with the posterior margins 

 of the tergites very narrowly and indistinctly yellow. Ovi- 

 positor horn-coloured, the valves rather long and slender. 

 Ilab. Rhodesia (Melsetter District). 



Holotijpe, (J, Chiriuda Forest, October 1905 (G. A. K. 

 Marshall). 



Allutopotype, ? . 



Type in the collection of the British Museum. 

 By means of the existing keys, Parutro/eza teucholahuides 

 would run to the genus Teucholubis, Osten-Sacken, but a 

 comparison with certain Oriental species of Parutri>ptza, 

 such as P. ornatipennis (de Meijere) and P. flavitibia, 

 Alexander, convinces me that we have here to do with 

 a highly specialized member of Parutropeza, which gives 

 us a distinct clue as to the manner in which the reduced 

 r;idial venation of Teucholubis has l)cen evolved. This is 

 l)roduced by the atrophy of the tip of /.'j beyond the radial 

 cross-vein and the straightening out of the base of 7?2 iuto 

 alignment with r. In the Oriental s^ccie^ oi Par atropeza^ 

 incluitiug P. pictipentiis (Edwards), iu addition to the two 

 species mentioned above, the tip of Pj is preserved, but the 

 entire branch is small, nearly vertical in position and often 

 with the radial cross-vein inserted near the middle of its 

 length. It may become necessary to relegate Paratropca 

 to subgeneric r;ink under Teucholabis, giving us a case 

 entirely comparable to Goiiuntyiu and its reduced subgenus 

 Leijioneuru. 



