232 MAJOR F. C. FRASER ON 



Male. Abdomen 24 mm. Hindwing 30 mm. 



Head. Lips, epistome and face whitish yellow ; frons and 

 vesicle metallic blue ; occiput black ; eyes olivaceous with a cap of 

 reddish brown above. 



Prothorax yellowish. 



Thorax warm brown on the dorsum, bright golden yellow 

 laterally, the postero-lateral suture marked finely with brown in its 

 upper two-thirds. The dorsum and lateral markings are pruinescent. 



Legs black, the coxae and trochanters bright golden yellow. 



Abdomen. The first three basal segments reddish yellow, the 

 apical two-thirds of the third segment deeply pruinosed and almost 

 white on the dorsum, remaining segments warm brown intensifying 

 analwards until quite black. Possibly in the fully adult male all 

 these latter segments are pruinosed but all the specimens before me 

 appear to be fully adult and only show pruinescence on the 3rd 

 segment. 



Anal superior appendages as long as the 9th segment (which 

 is nearly 3 times as long as the 10th), narrow at the base, broadening 

 apically where they show a broad, blunt point directed downward, 

 apex pointed. 



Inferior appendage triangular, curling upward at the end. 



Wings hyaline but faintly enfumed at the apex and warmly 

 saii'ronated at the base as far out as the 2nd antenodal nervure ; 

 reticulation black and prominent ; 2 rows of cells in the discoidal 

 field ; trigones and hypertrigones entire ; one row of cells between 

 llxpl. and lis ; Mspl. poorly developed ; divided cells in outer angle 

 of loop only ; 7 antenodal nervures and 6 postnodal nervures in fore- 

 wing, 6 of each in the hind : stigma very large, light yellowish 

 brown. 



Genital organs. Lamina broad and very depressed, its free 

 border fringed with yellow hairs; inner tentaculae very broad, very 

 robust, rounded, and short, parrot-beak shaped hooks directed directly 

 inward, the outer short, broad, rounded, not nearly overlapping the 

 lobe ; lobe small, elongate, converging in a spiral plane. 



JOURN. NAT. HIST. SOC. -SIAM. 



