1916.] NATURAL SCIENCES OF PHILADELPHIA. 547 
Fig. 6. — Wing of (1. lacliryinaliH Alexander. 
Fig. 7. — Wing of G. roslrala Say. 
Fig. 8. — Wing of G. ibis ;<p. n. 
Fig. 9. — Wing of G. insignis Loew. 
Fig. 10. — Wing of Dicranoptycha germana Osten Sacken. 
Fig. 11. — Wing of D. sobrina Osten Sacken. 
Fig. 12. — -Wing of D. winnemana sp. n. 
Fig. 13. — Wing of Rhanipliidia flavipes Macquart. 
Fig. 14. — Wing of R. mninen.sis sp. n. 
Fig. 15. — Wing of Teucholabis complexa Osten Sacken. 
Fig. 16. — Wing of T. lucida Alexander. 
Plate XXVI. — Fig. IT.^Wing of Gonoinyia (Leiponcura) nlexanderi Johnson. 
18. — Wing of G. (L.) cinerea Doane. 
g. 19. — Wing of G. (L.) sacandaga Alexander, 
g. 20. — Wing of G. (L.) plenrnlis Williston. 
g. 21. — Wing of G. (L.) pner Alexander, 
g. 22. — Wing of G. [L.) manca Osten Sacken. 
g. 23. — Wing of G. {Gonoinyia) mathesoni Alexander, 
g. 24. — Wing of G. (G.) blanda Osten Sacken. 
g. 25. — Wing of G. (G.) californica Alexander, 
g. 26. — Wing of G. (G.) sidphurella Osten Sacken. 
g. 27. — Wing of G. (G.) flavibasis Alexander, 
g. 28. — Wing of G. (G.) florens Alexander, 
g. 29. — Wing of G. (G.) cognatella Osten Sacken. 
g. 30. — Wing of G. (G.) noueboracensis Alexander, 
g. 31. — Wing of G. (G.) filicauda Alexander, 
g. 32. — Wing of G. (G.) virgata Doane. 
g. 33. — -Wing of G. {G.) subcinerea Osten Sacken. 
Plate XXVII. — Fig. 34. — Wing of Erioptera {Erioptera) laticeps sp. n. 
Fig. 35. — Wing of E. {Mesocy phono) tantilla sp. n. 
Fig. 36. — Wing of E. {EmpaUr) vyctops sp. n. 
Fig. 37. — Wing of Molophilus fiillnnt'nsis sp. n. 
Fig. 38. — Wing of M. nova-CLisurieasis sp. n. 
Fig. 39.— Wing of M. ursinus Osten Sacken. 
Fig. 40. — Wing of Empedomorpha empedoides Alexander cf . 
Fig. 41. — Wing of Rhabdornastix (Sacandaga) monticola sp. n. 
Fig. 42. — Wing of R. (S.) caudata Lundbeck. 
Fig. 43. — Wing of R. (S.) flava Alexander. 
Fig. 44. — Wing of Pterochionen bradleyi sp. n. 
Fig. 45. — Wing of Limnophila edivardi sp. n. 
Fig. 46. — Wing of L. sylvia sp. n. 
Plate XXVIII. — Fig. 47. — -Wing of Tricyphona incondans Osten Sacken. 
48. — Wing of T. calcar Osten Sacken. 
g. 49. — Wing of T. auripennis Osten Sacken. 
g. 50. — Wing of T. hyperborea Osten Sacken. 
51. — Wing of T. katahdin Alexander, 
g. 52. — Wing of T. vernalis Osten Sacken. 
g. 53. — Wing of T. paludicola sp. n. 
g. 54. — Wing of Rhaphidolabis (Rhaphidolabina) flaveola Osten Sacken. 
g. 55. — Wing of R. {Plcctromyia) modesta Osten Sacken. 
g. 56. — Wing of R. {Rhaphidolabis) tenuipes Osten Sacken. 
g. 57. — Wing of R. (R.) cayuga sp. n. 
g. 58. — Wing of R. {R.) rubescens sp. n. 
Plate XXIX. — Fig. 59. — Hypopygium of Gonomy'ia {Leiponeura) alexanderi; 
dorsal aspect of the pleural appendages; d = dorsal appendage; v = ven- 
tral appendage. 
Fig. 60.^Hypopygium of G. (L.) helophila Alexander; dorsal aspect_|of the 
pleural appendages; lettering as in Fig. 59. 
