CHARLES P. ALEXANDER 31 
EXPLANATION OF THE PLATES 
Plate I 
Fig. 1. — Wing of Dicranomyia mulsa sp. n.; 9 . 
Fig. 2. — Wing of Dic7-anomyia inulsasp.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 Alarha hrunneicornis 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. — Wing of Molophilus tenebricosus sp. n. 
Fig. 11. — -Wing 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 Geraiiomyia lachrymalis sp. n. 
Fig. 4. — Wing of Geranomyia plumbeipleura sp. n. 
Fig. 5. — -Wing of Geranomyia scolopax Alexander. 
Fig. 6. — -Wing of Geranomyia townsendi sp. n. 
Fig. 7. — Wing of Geranomyia glauca sp. n. 
Fig. 8. — Wing of Trimicra andensis sp. n. 
Fig. 9. — Wing of Gonomyia velutina sp. n. 
Fig. 10. — Wing of Gonomyia velutina 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. — Hypopygium of (?ono?«?/ia jejiwa; lateral aspect, a = pleura. b = 
inner pleui-al appendage. c = outer pleiu-al appendage. d = 
penis-guard. 
Fig. 2. — Hypopygium of Atarba brunneicornis; dorsal aspect, pleura and 
the apical appendages. 
Fig. 3. — Hypopygium of Molophilus capricoms; ventral aspect of the ven- 
tral apical appendage. 
TRANS, am. ENT. SOC, XLII. 
