ARTHROPODA — INSECTS 



319 



to present) ; e.g. bees, ants, wasps. 

 19. Hadentomoidea (Pennsylva- 

 nian). 20. Embioidea (Oligocene to 

 present) . 21. Sypharopteroidea 

 (Pennsylvanian). 22. Hapalopte- 

 roidea (Pennsylvanian). 23. Perlaria 

 (Permian to present). 24. Prote- 

 phemeroidea (Pennsylvanian). 25. 

 Plectoptera (Permian to present) ; 

 e.g. May-flies. 26. Protodonata 

 (Pennsylvanian to Triassic). Some 

 of these primitive dragon flies from 

 the Pennsylvanian had a length of 

 body of fourteen inches with a 

 spread of wing of at least two feet 

 (Fig. 150). 27. Odonata (Jurassic 

 to present). Dragon flies. 28. 

 Megaloptera (Triassic to present). 

 29. Raphidioidea (Oligocene to pres- 



FiG. 138. — The butterfly, Prodryas persephone 

 Scudder, from the Miocene shales of Floris- 

 sant, Colorado. In this specimen are mar- 

 velously preserved not only the knobbed an- 

 tennae and entire form as though mounted 

 in a cabinet, but the very scales upon the 

 wings. (From Scudder.) 



ahd 

 Fig. 137. — A beaked insect, 

 Teretrum primulum Scudder, 

 of the order Coleoptera, from 

 the Miocene of Florissant, 

 Colorado. Length 3 mm. b., 

 beaks, not well preserved (the 

 point of the beak was most 

 probably rounded) ; c, eye; el., 

 elytra (the thick anterior pair 

 of wings serving only as a pro- 

 tection of the posterior pair) ; 

 h., head; th., thorax; abd., 

 abdomen. (From Scudder.) 



ent). 30. Neuroptera 

 (Jurassic to present) ; 

 e.g. lacewing flies. 31. 

 Megasecoptera (Penn- 

 sylvanian). 32. Panor- 

 patae (Jurassic to pres- 

 ent). 7,T,. Trichoptera 

 (Jurassic to present). 



34. Lepidoptera (Jurassic 

 to present). Butterflies 

 (Fig. 138) and moths. 



35. Diptera (Jurassic to 

 present). Flies. 36. Suc- 

 toria (Oligocene to pres- 

 ent). Fleas. 37. Pro- 

 tohemiptera (Permian). 



