THE MYCETOPIIILID.i; OF NORTH AMERICA. 2/5 



ExPLAXATiox OF Plates. 

 Plate. (Figs. 46 to 69 reduced from Plate i in Johaniisen's 



Mycetophilidse, Genera Insectorum). 

 Fig. 46. Head of Asindulum montanum. 

 " 47. Palpus of Ceroplatus. 

 " 48. Antenna of Ceroplatus. 

 " 49. Proboscis of Asidulum coxale. 

 " 50. Palpus of Exechia. 

 " 51. Antenna of Mycetophila. 

 " 52. Antenna of Cordyla. 

 " 53. Head of Gnoriste. 

 " 54. Palpus of Cordyla. 

 " 55. Ventral aspect of mouth parts of ^Mycetophila 



punctata. 

 " 56. Mycetophila punctata, female. 

 " 57. Tarsal claw of ]\Iycetophila. 

 " 58. Tarsal claw of Ceroplatus. 

 " 59. Antenna of Diomonus. 



" 60. Tibia and tarsus of Heteropterna (after Skuse). 

 " 61. Head of Hadroneura (after LundstromV 

 " 62. Hind tibia of Exechia. 

 " 63. Dorsal aspect of head of IMycomya (Sciophila \\"\n- 



nertz). 

 " 64. Proboscis and palpi of Arctoneura T^Cyrtoneura.. 



after IMarshalH. 

 " 65. Dorsal aspect of head of Diomonus. 

 " 66. Antenna of Platyroptilon (after \\'estwood). 

 " 6'/. Dorsal aspect of head of Exechia. 

 " 68. Head of Lygistorrhina (after Skuse"). 

 " 69. Frontal aspect of Leia (=Neoglaphyroptera Osten- 



Sacken). 

 " 70. Diagram of Palaeoplatyura wing. 

 "71. " " Ditomyia wing. 



" 72. " " Sciophilinae wing. 



" 73. " " ^Fycetophilinae wing. 



Explanation of Abbreviations. — C = Costa : Sci and Sc: ~ 

 anterior and posterior branches of the subcosta ; Ri. R:-r., and 

 R4+5 = branches of the radius ; Rs = radical sector = 

 R;+"+R<-f-^: T\Ti+:; and IM^ = branches of the media; Cui and 



