CLASSIFICATION OF PALEOZOIC INSECTS. 351 



Plate xxx. 



Fig. 1. Anthracothremma robusta, No. 2052, f , Mazon Creek, 111. Drawn by Katherine Peirson. 

 Fig. 2. Oenentomum validum, front wing, f , Mazon Creek, 111. Drawn by Katherine Peirson. 

 Fig. 3. Genentomum validum, hind wing, f , Mazon Creek, 111. Drawn by Katherine Peirson. 

 Fig. 4. Dieconeura arcuata, f , Mazon Creek, 111. Drawn by Katherine Peirson. 

 Fig. 5. Anthracothremma robusta. No. 2052, f , Mazon Creek, 111. Drawn by Katherine Peirson. 

 Fig. 6. Anthracothremma robusta. No. 2048, £, Mazon Creek, 111. Drawn by Katherine Peirson. 

 Fig. 7. No. 2018. Seep. 329, f, Mazon Creek, 111. Drawn by Katherine Peirson. 

 Fig. 8. CheliphMria carbonaria, f, Mazon Creek, 111. Drawn by Katherine Peirson. 



Plate xxxi. 



Fig. 1. Polyernus laminarum, -f, Pittston, Penn. Drawn by J. H. Emerton. 



Fig. 2. Chrestotes lapidea, ■{, Mazon Creek, 111. Drawn by S. H. Scudder. 



Fig. 3. Propteticus infernus, anterior extremity, reverse of fig. 4, \ , Little Vermilion River, 111. Drawn 

 by J. H. Blake. 



Fig. 4. Propteticus infernus, reverse of fig. 3, f, Little Vermilion River, 111. Drawn by J. H. Blake. 



Fig. 5. Gerarus Danae, \, Mazon Creek, 111. Drawn by S. H. Scudder. 



Fig. 6. Gerarus vetus, a little enlarged, Mazon Creek, 111. Drawn by S. H. Scudder. 



Fig. 7. Pachytylopsis Persinairei, f, Mons, Belgium. Drawn by S. H. Scudder from the heliotype pub- 

 lished by DeBorre. 



Fig. 8. No. 2050. Seep. 342, ^, Mazon Creek, 111. Drawn by Katherine Peirson. 



Fig. 9. Aethophlebia singularis, ; * ? Mazon Creek, 111. Drawn by Katherine Peirson. 



Plate xxxii. 



Fig. 1. Megathentomani pustulatum, \, Mazon Creek, 111. Drawn by S. H. Scudder. 



Fig. 2. No. 2029. See p. 350, f , Pittston, Penn. Drawn by J. S. Kiugsley. 



Fig. 3. No. 2016. See p. 344, f , Mazon Creek, 111. Drawn by Katherine Peirson. 



Fig. 4. Phthanocoris occidentalis, f , Kansas City, Mo. Drawn by J. H.Blake. 



Fig. 5. See p. 345, \ , Mazon Creek, 111. Drawn by J. S. Kingsle}-. 



Fig. G. Adiphlebia Lacoana, \, Mazon Creek, 111. Drawn by S. F. Denton. 



Fig. 7. Gerarus mazonus, f , Mazon Creek, 111. Drawn by J. S. Kiugsley. 



Fig. 8. Polyernus complanatus, reverse of fig. 11, f, Mazon Creek, 111. Drawn by S. F. Denton. 



Fig. 9. Megathentomum pustulatum, showing the serration of the costal margin of fig. 10 near tip, V°< 



Mazon Creek, 111. Drawn by J. S. Kingsley. 

 Fig. 10. Mi'.gathentomum pustulatum, \, Mazon Creek, 111. Drawn by J. S. Kingsley. 

 Fig. 11. Polyernus complanatus, f , reverse of fig. 8, Mazon Creek, 111. Drawn by S. F. Denton. 



