-i8 5 - 



No. i is the internal vein which is close to the hin f d margin. Between it 

 and the median vein is a false vein, or fold, so closely resembling a true 

 vein that until fully denuded, its spurious character is not apparent. In 

 a species in which the wings are hyaline and only the veins clothed with 

 scales this is especially likely to mislead, as here the false vein is as 

 distinctly shown as any of the others 



Vein two runs from the outer third of median vein with a downward 

 curve to outer margin Vein three from meadian nearly half way be- 

 tween the inception of vein 2, and the end of the median, to outer 

 margin. Vein six from a short spur at the end of sub-costal. The median 

 cell is imperfectly closed by inward spurs from the end of median and 

 sub-costal, which, perfectly distinct at their inception become faint and 

 thread like before they join. Through the centre of the median cell, 

 half way to the base, and the same distance toward the outer margin, 

 runs a distinct fold or false vein. Vein seven forms the continuation uf 

 the sub-costal, and gives rise to veins 10 and 8, one quarter from its in- 

 ception. Vein 8 runs to apex, giving rise to vein g at its middle. Vein 

 9 runs to costa, as does also vein io. Vein n runs from the sub-costal, 

 one fourth from tip to the costa, rather less than one fourth from apex of 

 wing. Vein 12 — the costal vein, runs from base to costa, rather less 

 than one third from tip. 



The secondaries have but five veins; No. 1 is the internal; 2 and 3 

 are together from the end of the median ; 4 and 5 together from the end 

 of the sub-costal. There is no costal vein. The median cell is closed 

 by a long inward loop. 



The figure will better explain the course of the veins than words of 

 mine can do. The frenelum is present but is weak and hair like. It 

 is simple in the $. 



The legs are moderately long and slender; closely scaled. Anterior 

 with tibial epiphyses small; median with a pair of terminal spurs and 

 posterior with two pairs of spurs. The tarsi are not spinulated but 

 clothed beneath with rather stiff hair. The claws are simple, 



The antenna are lengthily bi-pectinate nearly to the tip, where the 

 joints are serrate. In one specimen I counted sixty-three joints. In 'the 

 9 the pectinations are not so long, 



The palpi are of the usual form and proportion, and as shown in 

 the figure. 



In conclusion, the discovery of this remarkable structure in so pro- 

 minent and well known a form as Cos?nosoma omphale, shows how little 

 we really know as yet of the Lepidoptera, and how wide a field exists for 

 the careful and conscientious student. 



