168 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 90 



4. Ostium considerably shorter than width of genital plate; genital 



plate with a long row of hairs posteriorly (fig. 277) .grotella Robinson (p. 192) 

 Ostium as long as width of genital plate; posterior row of hairs 



reduced to about half a dozen (fig. 275) maculatella Busck (p. 194) 



5. Ductus bursae bulbous before ostium (fig. 102) .heracliana (Linnaeus) (p. 173) 

 Ductus bursae not bulbous at any point (figs. 278, 282) 6 



6. Anterior edge of ostium convex (fig. 278)-artemisiGlla McDunnough (p. 181) 

 Anterior edge of ostium cleft (fig. 282) alienella Busck (p. 180) 



7. Ductus bursae sclerotized for at least two-thirds of its length 



(fig. 279) eleanorae, new species (p. 178) 



Ductus bursae otherwise (figs. 280, 281; 283-289) 8 



8. Sclerotized portion of ductus bursae limited to a narrow band 



(figs. 283, 284) 9 



Sclerotized portion of ductus bursae otherwise (figs. 196, 197, 285, 289). 10 



9. Sclerotized portion of ductus bursae armed with small teeth 



(fig. 284) palousella, new species (p. 171) 



Sclerotized portion of ductus bursae unarmed (fig. 283) 



artemisiae dracvmculi Clarke (p. 169) 



10. Sclerotized portion of ductus bursae strongly curved (figs. 286-288) 11 



Sclerotized portion of ductus bursae straight or only slightly 



curved (figs. 280, 281, 285, 289) 13 



11. Genital plate with a pair of shallow, cupped sclerites on anterior 



margin (fig. 288) multifidae Clarke (p. 187) 



Genital plate without such sclerites (figs. 286, 287) 12 



12. Genital plate abruptly narrowed laterally; ostium a narrow slit 



(fig. 287) angustati, new species (p. 189) 



Genital plate of nearly equal width throughout, ostium trian- 

 gular (fig. 286) whitmani, new species (p. 182) 



13. Signum in posterior part of bursa copulatrix (figs. 285, 289) 14 



Signum in anterior part of bursa copulatrix (figs. 280, 281) 15 



14. Sclerotized ventral sclerites of genital plate equal to length of 



sclerotized portion of ductus bursae (fig. 285) 



yakimae, new species (p. 185) 

 Sclerotized ventral sclerites of genital plate shorter than length 

 of sclerotized portion of ductus bursae (fig. 289) 



leptotaeniae Clarke (p. 184) 



15. Ductus bursae sclerotized for less than half its length; a small 



protuberance from the side of the sclerotized part (fig. 281) 



cinereocostella Clemens (p. 171) 

 Ductus bursae sclerotized for about half its length and without 

 small protuberance from the sclerotized part (fig. 280) 



juliella Busck (p. 176) 



DEPRESSARIA ATROSTRIGELLA, new species 

 PlxVte 35, FiGUKES 194, 194a 



Labial palpus light oclireous- white ; second segment suffused with 

 fuscous in the brush; third segment immaculate. Antenna light fus- 

 cous somewhat mottled basally with gray; basal segment gray be- 

 neath. Head, thorax, and fore wing ochreous-white. The whole 

 so strongly suffused with deep gray that the ground color is nearly 

 obliterated. Vertex and the head behind the antennae infuscated. 



