4 CHR. AURIVILLIUS, ETHIOPIAN GENERA OF STRIPHNOPTERYGIDTR. 



Hampson ^ distinguishes the Bombycidse from the »Eupte- 

 rotidse» by the absence of tbe frenulum. The frenulura is 

 howewer as noted by Snellen ^ distinct in the male of Bom- 

 hyx mori and of Andraca trilochoides and on the other side 

 there are niany genera, uudoubtedly belonging to the Striph- 

 nopterygidee, which have the frenulum rudimentary or absent 

 in both sexes. The Bombycidse have the veins 7 — 10 of the 

 före wing arranged in a quite difFerent manner so that vein 

 10 is emitted nearer to the cell than 8 and 9. 



In the Notodontidse tbe same conditions take place; vein 

 10 of the före wing is always emitted nearer to the cell 

 and longer than vein 9. The genera Gangarides, Thaume- 

 topoea, Anaphe and others agree in this point, as well as in 

 habitus, completely with the Notodontidse and must therefore 

 as I have already accentuated ^ be referred to the latter fa- 

 mily. Hampson ref ers Gangarides and Thaiimetopoea (Cnetho- 

 campa) to the ^Eupterotidse» only because they have the 

 proboscis absent. The proboscis is hovvever also absent in 

 the European genus Ptilophora, a true Notodontid, and on 

 the other side present in the African genera Hemijana, Ca- 

 merunia, Drepanojana and Viana of the Striphnopterygidae. 



The absence of the proboscis is, I think, of no real use 

 in distinguishing the families of moths. 



The Striphnopterygidee may be divided in two, as it 

 seems, very natural subfamilies. ^ 



Key to the Subfamilies. 



A. Lower discocellular of hindwing much, usually three 

 times, longer than the middle discocellular. 



1. Striphnopterygince. 



B. Lower discocellular of hindwing not or slightly longer, 

 often much shorter, than the middle discocellular. 



2. Janince. 



^ Fauna of Brit. India. Moths 1. p. 9, 31; Catal. of the Lep. Phalsense 

 1, p. 18. 



2 Tijdschr. v. Ent. 43, p. 24. note 1. 



3 Öfvers. Vet. Akad. Förh. 57, p. 1048 (1900). 



* The African genera Metadula Walk., Metajana Höll., ^Sangatissa> 

 DiST. and Trotonohis Botl. are unknown to me. 



