Mr. A. G. Butler on Doratopterjx of Rogenhofer, 51 



V. — On Doratopteryx of Rogenhofer ^ a Genus of Moths 

 allied to Himantopterus. By Arthur G. BuTLER, F.L.S., 

 F.Z.S., &c. 



In mj recent description of a new genus — Pedo'ptila^ allied to 

 Himantopterus — I referred (pp. 340 and 342) to a moth from 

 Zanzibar identified many years since by Herr A. Bogenhofer 

 as a Himantopterus^ of which, however, no description 

 appeared to have been published. 



Herr Bogenhofer has kindly forwarded to me a separate copy 

 of a short paper, published last year in the ' Sitzungsberichten 

 der k. k. zoolog.-botanischen Gesellschaft in Wien ' (vol. 

 xxxiii.), in which a description of this moth appears, a new 

 genus, Doratopteryx, being erected for its reception. Although, 

 as I expected, this moth comes nearer to Pedoptila than to 

 Himantopterus J it must stand as a distinct genus between 

 these two. 



Doratopteryx, as figured and described by Herr Bogenhofer, 

 dififers from Pedoptila as follows : — 



Doratopteryx. 



Expanse of wings 17 millim. 



Secondaries 17 millim. 



Costal and subcostal veins of pri- 

 maries well separated. 



Subcostal branches separate at 

 tbeir origins. 



Lower radial and third median 

 well separated at their 

 origins. 



Secondaries with two veins. 



Pedoptila. 



Expanse of wings 23 millim. 



Secondaries 18^ millim. 



Costal and subcostal veins of pri- 



• maries lying close together. 

 Subcostal branches emitted from 



a short footstalk. 

 Lower radial and third median 



from the same point. 



Secondaries with three veins. 



These characters are all easily seen ; but others are indi- 

 cated which have rather a specific than a generic value, such 

 as the form of the outer margin of the primaries, which in 

 Doratopteryx is slightly sinuous (geschwungen), whereas in 

 Pedoptila it is regularly arched, the slightly shorter inner 

 margin of these wings in the former genus and the different 

 coloration, the type of Doratopteryx having the wings smoky 

 brown, with the basal area golden yellow, whereas Pedoptila 

 is grey, with the base bright russet reddish. 



One difference which appears in the two figures is due to 

 an injury to the type oi Pedoptila. In Doratopteryx the first 

 subcostal branch forks into two towards the apex ; this has, 

 however, clearly been the case with Pedoptila, only the apical 

 portion of both primaries in Mr. Swanzy's specimen is broken 



4* 



