BY H. .T. TILLYARD. 



379 



6 5-6 I first two t)r thi'ee postnodals 

 4 6-7 I Head dark brown, hairy, 



Goinpfidmacromia (G. pnradoxa Braucr), wliit-h it resembles in 

 the shape nf its trian,c;les, and tlie presence of tlie second cubital 

 cross-vein in hindwing. The form of the anal loop is inter- 

 mediate between those of Syacordnlia and Gomphomacromia. 



6. Lathrocordulia mktallica, u.sp. (Plate x., figs.2, 4, and 10). 



(J. Total length, 54; abdomen, 42; hindwing, 31mm. 



Wings: neuration black, open; with about 1mm. of dark 

 saffroning at wing-bases. Pterosfupna 3 mm., orange between l)lack 

 nervures. Mi'mhramde large, greyish-white, forewing 2, hindwing 

 4 mm. XodnJ Indicator 

 of all wings not complete, 

 a tinge of purplish on vertex and frontal ridge; front widely, 

 almost semicircularly, cleft in the middle; Jahrum and lahhtm 

 more inclined to fulvous. T h o r a x dark brown, with grey 

 downy hairs. On each side of dorsal ridge is a band of metallic 

 green; sides also retlecting metallic green or rich steel-colour 

 nearlv all o\er. underside brown. Lexi>< rather short, black. 

 Abdomen slender, subcylindrical, 1-2 enlarged, 3 narrow, the 

 rest graduallv enlarging to 9, which is nearly as wide as 2. 

 Colon r : 1-2 very dark brown, auricles of 2 small, semitranspai-ent 

 brown; rest t)f abdomen rich dark bronze-green (fading to dull 

 blackish in the dead insect). Appendages: sioperior long, 

 4-6 nun., slightly wavy, diverging for 1mm.; then converging 

 so as to touch at tips; black; apical two-thirds hairy, especially on 

 the inside. Inferior short, 2 mm., subtriangular, fairly pointed, 

 tip wry slightly bifid; semitransparent bi-ownish, darker at tip, 

 which is upcurved (Plate x., figs. 4, 10,. 



9. Very similar to (J, but differs from it as follows : — Total 

 length, 50; abdomen, 36"5mm. ; wings same length as in ^, but 

 with a greater amount of saffroning at bases (2 mm. in hindwing). 

 Abdomen thicker and more cylindrical than in ^\ 1-2 slightly 

 enlarged, 3-7 cylindrical, 8-10 slightly enlarged. Vulvar lamina 

 of 8, with lateral folds disclosing a triangular area-with its apex at 

 the base of the segment, vulvar scale slightly bifid; 9 with lateral 

 folds wide apart, disclosing a semitransparent brown ventral 

 .surface carrying two small projecting points; 10 fiattish beneath, 



