new or little-known Tipulidaj. 571 



of the plouritcs produced into a small heak-likc lobe ; mesal 

 lace of pleuritc produced caiulad and n\esad into a loliC ; 

 apex of inner pleural ai)pendagc slender. Gonapophyses 

 appearing as rods that are sliaped somewhat like boomerangs, 

 bent near mid-length, the di>tal ends obtuse. 



Hab. New Zealand (South Island). 



Huhtijpe, cJ, Lake Wakatijju, Otago, December 1921 

 (F. S. Oliver). 



Allotopotype, ? . 



Varalopotype, $ . 



GynopUstia bidentata, sp. u. 



General coloration shiny black, sometimes faintly greenish 

 black or blue-black, especially on the abdomen ; anteunue 

 15-seginented, the terminal five segments simple; male 

 hypopygium with the gonapophyses deeply bifid at tips. 



Mule. — Length about 6'5-7 mm. ; wing 5*6-6 2 mm. 



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



Rostrum and palpi black. Antennae 15-segraented, the 

 formula being 2 + 2 + 6 + 5, the longest fiabellation about 

 two-fifths the length of the flagellumj antennae entirely 

 black. Head shiny black, 



Mesonotum shiny black. Pleura black, with a patch of 

 greyish-yellow pubescence on the mesepisternum. Halteres 

 pale, the knob^ a little darker. Legs with the fore coxae 

 blackj the other coxcC brownish black; trochanters brownish 

 black ; femora obscure yellow basally, black apically, the 

 yellow most extensive on the posterior legs, where only the 

 apices are darkened ; remainder of tlie legs black ; posterior 

 tarsi uniformly dark. Wings greyish subhyaline ; cell Sc 

 infuscated ; a rather sparse dark brown pattern as follows : — 

 A circular area at origin of Rs, not attaining vein M in the 

 male, barely reaching this vein in the female ; a relatively 

 narrow seam from the stigma along the cord and outer end 

 of cell 1*^ iV/o > wing-tip faintly darkened ; a more or less 

 distinct cloud at fork of A/j^g j faint clouds in outer ends of 

 cells Cui and Cu, at mid-length of vein (!ui and in cell 

 2nd A ; veins dark brown. Venation : cell il/i slightly 

 variable in size, approximately equal to its petiole; basal 

 deflection of CM] beyond mid-length of cell 1*^ M^. 



Abdomen blue-black, the hypopygium a very little paler. 

 Male hypopygium with the apex of each plcurite produced 

 into two fiattened lobes, one smaller and more obtusely 

 rounded than the other ; gonapophyses deeply bifid, the 

 lateral tooth about twice the length of the mesal tooth ; 



