AMERICAN NEUROPTERA. 267 



PLATE XVII. 



Fig. l. — Perla couloni, ventral plate. 



2. ■' immarginaia, " 



3. " valida, 



" 4. " carolinensis, " 



" 5. " xanthenes, " 



" H. " modesta, " 



'■ 7. " concolor, male genitalia, .side view. 



.. g .. .; u .. g^^j .. 



" 9. " fiiMosa, ventral plate. 



■' 10. " excavata, " 



'■ 11. " lycorias, " 



" 11. " illnstris, 



PLATE XVIII. 

 Fig. 1. — Limuephilus occidentalis, femalt. 



2. '' rohweri, male. 



3. " occidentalis, male. 



4. '' canadensis, female. 



5. " despectus, female. 



6. " extractus, male. 



7. " " female. 



8. " abbreviatus, male. 



9. " nebulosus, male. 



10. " macgiliivrayi, male. 



11. " bifidus, male. 



12. '■ snbmonilifer, males. 



13. " bifidus, male. 



14. " " female. 



15. " " female. 



16. '■ subinonilifer, females. 



PLATE XIX. 



Fig. 1. — Boriomyia pretiosa, male, side. 

 2. " " male, above. 



3. — Hemerobius placidus, male, side. 

 4. — Meleoma pallida, horn, male. 



5. " verticalis, horn, male. 



6. " iunovata, horn, male. 

 7. — Hemerobius alpesiris, male, side. 

 8. — Leptoceras renirvatus, male. 

 9. — Anaholia assimilis, male. 



10. ■' " female. 



11. " nigricula, male. 

 12. — Hijdropsyche pettiii, male. 

 13. — Diplectrona modesta, male. 

 14. — Platyphylax alaskensis, male, sup. appendage. 



15. " designata, male, sup. appendage. 



16. " occidentalis, male, sup. appendage. 



TBANS. AM. ENT. SOC. XXXIV. (34*) SKPTKMDEK, 1908. 



