CHARLES P. ALEXANDER 31 



EXPLANATIOX OF THE PLATES 



Plate I 



Fig. 1. — Wing of Dicranomyia mulsa sp. n.; 9 . 

 Fig. 2. — Wing of Dicranomyia mulsa sp. n.; cf . 

 Fig. 3. — Wing of Dicranomyia, species. 

 Fig. 4. — Wing of Dicranomyia invalida sp. n. 

 Fig. 5. — Wing of Dicranomyia virilis sp. n. 

 Fig. 6. — Wing of Aiarba brunneicornis sp. n. 

 Fig. 7. — -Wing of Orimarga andina sp. n. 

 Fig. 8. — -Wing of Gonomyia jejuna sp. n. 

 Fig. 9. — ^Wing of Molophilus capricornis sp. n. 

 Fig. 10. — ^^^'ing of Molophilus tenebricosus sp. n. 

 Fig. 11. — \\ ing of Epiphragma gracilicornis sp. n. 



Plate II 



Fig. 1. — Wing of Dicranomyia regifica sp. n. 



Fig. 2. — -Wing of Rhipidia (Arhipidia) vicina sp. n. 



Fig. 3. — -Wing of Geranomyia lachrymalis sp. n. 



Fig. 4. — -Wing of Geranomyia plumbeipleura sp. n. 



Fig. 5. — -Wing of Geranomyia scolopax Alexander. 



Fig. 6. — Wing of Geranomyia lownsendi sp. n. 



Fig. 7. — Wing of Geranomyia glauca sp. n. 



Fig. 8. — •\A'ing of Trimicra andensis sp. n. 



Fig. 9. — Wing of Gonomyia velulina sp. n. 



Fig. 10. — "Wing of Gonomyia velulina sp. n. 



Plate III 



Fig. 1. — Wing of Tipula exilis sp. n. 



Fig. 2. — Wing of Tipula jivaro sp. n. 



Fig. 3. — Wing of Tipula quichua sp. n. 



Fig. 4. — -Wing of Tipula mitua sp. n. 



Fig. 5. — Wing of Tipula monilifera Loew. 



Fig. 6. — Wing of Tipula armillatus sp. n. 



Plate IV 



Fig. 1. — Hypopygmm oi Gonomyia jejuna; Ititera] aspect. a = pleura. b = 

 inner pleui-al appendage. c= outer pleural appendage. d = 

 penis-guard. 



Fig. 2. — -Hypopygium of Atarba brunneicornis; doi-sal aspect, pleura and 

 the apical appendages. 



Fig. 3. — Hj-popygium of Molophilus capricorns; ventral aspect of the ven- 

 tral apical appendage. 



trans, am. ent. soc, xlii. 



