196 Dr. 0. P. Alexander 07i 



obscure yellow, contrasting with the dark pleura ; remainder 

 of the legs broken. Wings with a dark brown tinge, the 

 base and costal region a little brighter ; veins darker brown, 

 with conspicuous macrotrichise. Venation : basal deflection 

 of Cui about one-third longer than the deflection of M^ ; 

 anal veins convergent. 



Abdomen dark brown. Male hypopygium with the 

 appendages terminal in position as in M, terminans and 

 allies j a deep slit on mesal face of each pleurite to receive 

 the appendages ; lateral pleural appendage strongly curved 

 near two-thirds the length, the apex acute, the angle of 

 curvature filled with a pale membrane ; mesal appendage 

 about equal in length but not so stout, slender on basal 

 third, the remainder a little dilated, the surface with tiny 

 appressed denticles. 



Hab. New Zealand (North Island). 



Holotype^ ^ , Wainuiomata, near Wellington, February 3, 

 1922 {Geo, Howes), 



Paratype^ $ , Taumarunui, October 1, 1922 (T. R. Harris). 



This species is named in honour of the collector, Mr. W. 

 George Howes, to whom I am very greatly indebted for 

 invaluable material. 



Molophilus irregularis, sp. n. 



General coloration shiny orange-yellow; wings with a 

 strong yellow tinge ; male hypopygium with the basal 

 pleural appendage profoundly bifid, the lateral arm a strongly 

 curved spine. 



Male. — Length about 3*8 mm. ; wing 4'7 mm. 



nostrum obscure yellow ; palpi brown. Antennae of 

 moderate length ; scapal segments obscure yellow, the 

 flagellum pale brown. Head yellow. 



Mesonotum shiny orange-yellow, unmarked. Pleura 

 yellowish testaceous. Halteres yellow. Legs with the 

 coxse and trochanters yellow ; remainder of the legs broken. 

 Wings with a strong yellowish tinge, more intense at the 

 base, in the costal region, and along vein Cu ; veins yellow, 

 with brown macrotrichise. Venation : R^^^ and deflection 

 of i?5 subequal ; vein 27id A elongate, sinuous. 



Abdomen reddish yellow. Male hypopygium very 

 different in structure from any similar species. Apex of 

 each pleurite produced caudad into a cylindrical lobe, the 

 apex terminating in a small cliitinized spine, the surface 

 covered with microscopic black hooks which group to form 

 two distinct crests, along the lateral and dorsal margin of 



