156 THE CANADIAN ENTOMOLOGIST 



male toothed. Wings with a strong brownish tinge, costal cell more yellowish, 

 subcostal cell dark brown; stigma elongate, dark brown; narrow brown seams 

 along r-m and the deflection of Ri+5 and another along the basal deflection of 

 Cuj] a brown spot at the region of the arculus. X'enation about as in other 

 members of this characteristic group of species; Rs short, about equal to Rn; 

 cell i?2 very narrow, its inner end pointed; cells 1st M->, and M\ large; petiole of 

 cell M\ short, subequal to m; fusion of M-i and Cu^ about one-half of r-m. 



Abdomen discoloured; apparently dark brown, the lateral basal portions 

 of tergites two to five yellowish; tergites six to eight uniformly dark; sternites 

 somewhat similar; hypopj^gium yellowish. Male hypopygium with the ninth 

 tergite produced medially into a broad lobe, the apex of which is provided with 

 a rather small, V-shaped notch, the lateral lobes inconspicuous; the apex of this 

 median lobe is broadly blackened and the entire tergite, except the base, is 

 covered with numerous, subappressed, yellowish hairs; viewed laterally, each 

 lateral lobe is seen to be produced ventrad into a minute blackened tooth. 

 Outer pleural appendage broadly circular in outline, pale, a little darker near the 

 base, the surface covered with a dense, appressed, silken pubescence of a yellow 

 colour and a lessser number of coarse, black hairs. Inner pleural appendage 

 not jutting conspicuously caudad as in T. gahoonensis . Ninth sternite narrowly 

 but profoundly incised on the median line, near the dorsal proximal angle with 

 numerous long reddish seta?. Eighth sternite unarmed. 



Habitat.—Sierra Leone. 



Ilolotype.—d', collected by W. G. Clements, No. 93-20. 



Type in the collection of the British Museum (Natural History). 



Tipiila leonensis is closest to T. gahoonensis Alexander (Gaboon to Southern 

 Nigeria) but differs sufficiently in the smaller size, the different pattern of the 

 thorax, such as the increased size of the lateral spots on the praescutum and 

 postnotum, and, especially, the structure of the male hypopygium. 



Tipula ellioti, sp. n. 



General coloration orange-yellow, the praescutum and scutum with grayish 

 brown stripes that are narrowly margined with still darker brown; a small 

 brown spot on the lateral margin of the praescutum; abdomen yellow and black; 

 male hypopygium with the median lobe of the tergite very broad, depressed, 

 the caudal margin gently concave; pleural appendage very complicated in 

 structure. 



Male. — Length 20 mm.; wing 22 mm. 



Frontal prolongation of the head moderately elongate, orange-yellow, the 

 nasus slender; mouth-parts and palpi dark brown. Antennae with the scape 

 yellow, the flagellum brownish black. Head orange-yellow. 



Thorax orange-yellow, the mesonotal praescutum with three dark grayish 

 brown stripes that are narrowly marginal with still darker velvety-brownish 

 black; anterior half of the median stripe split by a blackish line; a very small, 

 rounded brown spot on the sides of the praescutum opposite the anterior ends of 

 the lateral stripes; sides of the pronotum with an indistinct darker spot; scutal 

 lobes grayish brown margined with darker, the median area broadh' yellow; 

 scutellum yellow, the lateral portions darker; the juncture between the scutellura 

 and lateral sclerites of the postnotum dark brownish black; postnotum yellowish 



