CARBONIFEROUS AGE. 



335 



from Illinois. Other Illinois species, of more advanced type, were 

 allied to the Shrimps, or Macrural Decapods ; Figs. 664, 665 repre- 

 sent two of this kind. Fig. 663 is a species of Tetradecapod. 



The Myriapods, or Centipedes, were of the same tribe with the 

 modern lulus, or the cylindrical Myriapods, having two pairs of feet 

 to each segment of the body. Fig. 666 represents a species from 

 Nova Scotia, and Fig. 667, one of very large size, from Illinois. 



Figs. 669-671. 



Neuropterous Inskcts. — Fig. 669,Miamia Bronsoni (X 2); 670, Miamia Dange. Orthopters.— 



671, Blattina venusta. 



Spiders were represented by Scorpions, and also by true Spiders. 

 One of the Scorpions, from Morris, Illinois, is shown in Fig. 668, and 

 a Spider from the same locality, in Fig. 668 A. 



The Insects, as gathered from American rocks, comprised species 

 related to the May-fly and others, among Neuropters ; Cockroaches, 

 among Orthopters. Fig. 669 represents one of the Neuropters related 



