77 



Spilonota lariciana, Hein. W.Manabridge %—6 



We can Bee no difference between this and the preceding 



species. At the same tunc, we would point out that in the 

 firsl place the material is not very reliable; in the second 

 place, the curious curvature of the valve make examination 



almost impossible. There appears to be some difference in 

 the cucullus where it joins the oosta; in some specimens 

 it is t inarginate, in others it is gently curved; the wing 

 parts do not appear to hold true to this distinction. In the 

 leinah there is apparently a difference in the eliptical form 

 ot the ostium plate, hut the difficulty of obtaining the same 

 view prevents us from definitely declaring a distinction, 

 and here again the wing parts do not coincide with this 

 character. We prefer to leave them, as heretofore, 

 separate species. 



Gents 5. Gypsonoma, Myk. type dealbana, Frol. 

 This rather compact genus is nearly allied to the preceding 

 groups and connected through nanana. The uncus is lost 

 and the socii much reduced. The spining at the apex of 

 the valva is a strong characteristic of the genus and brings 

 Neurastlienia subscquana into close association with it, 

 which is also borne out by the slightly different construction 

 of the signa. The coremnta of the ninth segment are 

 generally well developed. The ostium of the female is 

 elaborated. 



Gypsonoma aceriana Dup 4—2 



Valva squarely oblong, set at the apex with two or three 

 sharp spines below the middle, and a single one at the anal 

 angle Socii broad, rounded. /Edceagus short, rounded, 

 base bulbed; cornuti about 22. Coremata long scales. 



Ovipositor flattened. Ostium with crescent shaped 

 plate indented at either side before the ostium. Signa 

 lar' r e 



