698 Professor Christopher Aurivillius mi 



fuscous lines (the first nearly even at the middle and the second 

 somewhat undulate half-way between the middle and the margin), 

 and a very fine marginal line; these lines are faintly sliining through 

 on upper-side ; in the male there is an indistinct pale brownish- 

 yellow transverse line in the middle on upper-side. 

 Expanse 68 ( ? ), 74 ( (J ) ram. 



Nyassaland, Zomba, 1 $ ; Tanganyika, 1 $ ; Stevenson 

 road on the plateau between Nyassa and Tanganyika, 2 ^, 

 type. 



(The female from Tanganyika is much greyer with 

 hardly a trace of the outer line on either wing. — G. F. H.) 



This peculiar species agrees well with my definition of 

 the genus Gamermiia* except by vein 8 of fore-wing run- 

 ning to the margin below apex, by vein 3 being more dis- 

 tant from 4 and especially by vein 5 of both wings being, 

 especially in the female, emitted much nearer 4 than 6. 

 The male has on eacli side of first ventral segment a large 

 opening surrounded by an elevated rim ; these openings 

 are also present in the male of 0. albida. The male of 

 C. orphnc 1 am not able at present to examine. 



Genus Viana. 



Viana, Wlk., Proc. N. H. Soc, Glasgow, i, p. 340 

 (1869). Type velutina, Wlk., from the Congo. 



Proboscis aborted (?). Palpi porrect, reaching a little beyond the 

 frons, densely scaled in the male ; last joint very short. Antennae 

 reaching the apex of the cell, bipectinate ; branches rather long in 

 the male, short in the female. Fore-tibiae unarmed, hind-tibiae with 

 four spurs. Wings rather broad, more densely scaled in the male 

 than in the female. Fore- wing : apex l)roadly rounded ; outer 

 margin very convex ; vein 3 from well before angle of cell but nearer 

 to 4 than 2 ; 5 from a little nearer to 4 than 6, 6 from 7 near angle 

 of cell, 7 and 8 stalked together from 9, 10 absent, 11 free, from cell 

 close to its apex but soon anastomosing with 12, which approaches 

 very near to cell ; lower discocellular straight and erect, middle dis- 

 cocellular gently curved, oblique, half as long again as lower disco- 

 cellular. Hind-wing : neuration as in Phasienecus but vein 8 nearly 

 approaching to cell before middle ; hind-margin somewhat produced 

 and obtusely angulated at vein 4 in male, rounded in female. 

 Frenulum and retinaculum absent. Differs from all the allied genera 

 by vein 11 of fore-wing being free from the cell but soon anastomosing 

 with 12. 



* Bill. Vet. Akad. Haudl., 27 :4, No. 7, p. 26, 1901. 



