156 Dr. 0. P. Alexander ov 



New Zealand Tipnlidop. as well as valua1)le notes and 

 observati(nis. It is tlic only New Zealand species with cell 

 3/, lacking, a cliaracter possessed only by G.juciauhi, Osten- 

 Saeken, and G. octofasciuta, Brunctti (Celcbes)j among tiie 

 described species of the genus. 



Gynoplistia fidviventris, sp. n. 



Related to G. himaculata, Skuse; size smaller (wing, ^ , 

 72 mm.) ; mesonotum heavily ])ollinose ; halteres orangi; 

 tlironghout; wings uniformly tinged with brown; con- 

 sjncuons darker brown spots at origin of lis and at the 

 defiectiou of lii^r,; male hypopygium witli a single pleural 

 appendage, the tip of which is strongly curved. 



Male. — Length 7*5 mm. ; wing 7'2mm. 



Rostrum and palpi dark brown. Antennre injured in the 

 type, apparently with twelve branched flageller segments, 

 dark brown throughout. Head dark brown with a sparse 

 yellow pollen. 



Mesonotum and pleura with a very heavy yellow pollen, 

 which nearly conceals the brown or black ground-colour; 

 pseudosutural fovepe large, conspicuous, broadly triangular 

 in outline, the surface microscopically punctulate. Halteres 

 orange throughout. Legs with the coxse dark, yellowish- 

 grey pruinose ; trochanters dark brown ; femora and tibiae 

 yellow, the tips of each rather narrowly dark brown ; meta- 

 tarsi brown, the tips dark brown; remainder of tarsi dark 

 brown. Wings with a strong brown tinge; stigma darker 

 brown, this colour continued along the cord as a conspicuous 

 seam at the deflection of /^.j+s; a smaller but conspicuous 

 spot at origin of Rs ; veins brown. Venation : Rs strongly 

 arcuated at origin; R^+z short, about equal to 7/1 ; r—ni shorter 

 than m ; petiole of cell M^ shorter than the cell ; basal 

 deflection of Cwj just before mid-length of cell \st M2. 



Abdomen fulvous, a little darker toward the apex of the 

 organ; basal tergite iufuscated, but not blackened. Male 

 hypopygium with each pleurite slender, tapering gradually 

 to the narrow apex, the outer face clothed with conspicuous 

 reddish seta; a single pleural appendage, narrow basally, 

 dilated before mid-length, thence narrowed to the acute, 

 strongly curved point ; ou the cephalic or proximal margin 

 are two protuberances, one opposite the subbasal dilation, 

 the second appearing as a small triangular wing some 

 distance before the tip. Gonapophyses complex, each bear- 

 ing two laterally-directed curved hooks, the mure caudal of 

 which is very slender and delicate. 



