570 Dr. C. P. Alexander on 



Venation : r faint, on K^ uear three-fifths the length ; cell Mi 

 shorter than its petiole; basal deflection of Cui uear two- 

 thirds the length of cell 1st M.^ ; vein 2nd A ending some 

 distance before the level of tiie origin of Rs. 



Abdomen dark brown. Male hjpopygiura with the apical 

 mesal angle of each pleurite produced into a flattened 

 rounded lobe; outer pleural appendage a broad, flattened, 

 yellow blade. Gonapophyses appearing as stout arms that 

 are curved gently caudad and mesad, tlieir apices blunt. 



Hub. New Zealand (North Island). 



Holotype, alcoholic ^ , Palmerston N., Wellington Pro- 

 vince, December 1921. 



Gynoplistia aurantiopyga, sp. u. 



General coloration (in alcohol) black, the hypopygium 

 bright orange; antennae 15-segmented ; coxse black; legs 

 dark brown, the tips of the femora and tibiae blackened ; 

 wings greyish snbhyaline, with a rather difiuse brown 

 pattern. 



Male. — Length 7*5 mm. ; wing 6'6-6*8 mm. 



Female. — Length about 10 mm. ; wing 7"8 mm. 



Described from alcoholic specimens. 



Rostrum and palpi dark brown. Antennae 15-segmented, 

 the formula being 2 + 2 + 7 + 4, the longest pectination being 

 about two-fifths the length of the flagellum, the pectination 

 of flagellar segment 9 more than twice the length of the 

 segment ; antennae dark brown. Head shiny black. 



Mesothorax shiny black. Halteres dusky. Legs with the 

 coxae black ; trochanters obscure yellow ; femora obscure 

 yellow, the apices rather broadly blackened ; tibiae yellowish 

 brown, the tips narrowly infuscated ; spurs very large; 

 tarsal segments brown, the tips darker, the terminal segments 

 more uniformly darkened. In the female the coxae are all 

 yellow. Wings greyish snbhyaline, with a rather diff'use 

 brown pattern; cells C, Sc, and Sc^ infuscated; base of 

 cell R darkened ; a circular brown cloud at origin of Rs ; a 

 large quadrangular area at stigma, continued caudad along 

 the cord, the centre of cell 1st M^ being largely pale ; wing- 

 tip indistinctly darkened ; a brown cloud near mid-length of 

 cell Cm, continued into cell 1st A ; veins dark brown. Vena- 

 tion : /?2+3 very short ; cell Mi a little longer than its 

 petiole ; basal deflection of Cui near mid-length of cell 

 1st M2. 



Abdomen black, the hypopygium abruptly and very con- 

 spicuously orange. Male hyi)opygium with the apical angle 



! 



