408 A Preliminary Revision of the Genus Trisuloides 



Genitalia : — 



Valve lanceolate, with an internal process, this process not toothed 

 but pointed at the apex. Penis armed with cornuti, or with a covering 

 of closely-set short spines. Uncus long, narrow and curved, apex with 

 a short beak. 



1. Aplectoides caliginea Btlr. (Type.) 



Genitalia : — 



Valve lanceolate. Process long, pointed, smooth, and slightly curved, 

 Penis with cornuti present in three patches. Uncus, long and strongly 

 curved, apex with a short beak. 



2. Aplectoides nitida Btlr. 



3. Plataplecta plumbea Btlr. 



4. Acronycta flavala Moore. 



5. Tambana pallidipennis Warr. (Genitalia examined from a dissec- 

 tion made by Mr. Tarns.) 



Genitalia : — 



Valve and process as in caliginea and infausta. The process is 

 curved to near the base. Penis with coruuti in four patches. Uncus as 

 in the preceding forms. 



6. Mamestra infausta Wlk. (= Tambana nigra Warr.) 



Genitalia : — 



Valve and process as in caliginea. The process is almost straight 

 with a curve near its base. Penis without cornuti, but the membrane 

 which bears these in the other forms of this group is here covered with 

 closely-set short spines of almost equal size. Uncus long and strongly 

 curved. 



7. Tambana fuscipennis Warr. (Although only known in the $ , this 

 appears to me a distinct species.) 



8. Aplectoides obscura Leech. (Genitalia examined from a dissection 

 made by Mr. Tarns.) 



Genitalia : — 



Valve and process as in the preceding forms. The process stout, 

 and strongly curved to the middle. Penis with cornuti in four patches. 

 Uncus as in the preceding forms. 



