[From the Proceedings of the Boston Society of Natural History, 

 Vol. XI., February 26, 1868.] 



REMARKS ON TWO NEW FOSbIL INSECTS FROM THE 

 CARBONIFEROUS FORMATION IN AMERICA. 



Mr. Scutlder also exhibited two fossil insects from the coal 

 measures. 



One was found in the iron-stone nodules of Morris, Illinois, which 

 have previously afforded remains of insects. The fragment repre- 

 sents the wing — apparently an upper one — of a neuropterous insect, 

 which he called JMefjalhcnlomwn pustulatum. It is gigantic in size, 

 very broad, with distant nervures, simple and slight divarications, and 

 in the outer half of the wing, which alone is preserved, a cross neu- 

 ration, composed of most delicate and irregular veinlets. The wing is 

 also furnished with a large number of larger and smaller discolored 

 spots, the surfaces of the larger ones irregularly elevated. 



The vena mediastina is simple and straight; the vena scapularis 

 sends out two branches from its upper side, the first of which does not 

 reach the border but loses itself in a congeries of minute veins, while 

 the second, branching again quite near its origin, supports the tip of 

 the wing; the vena externo-mcdia occupies the middle third of the 

 wing, and divides once near the base; each branch is straight and 

 forks again, the upper one a little nearer the border than the second 

 divarication of the vena scajndaris, the lower still nearer to the mar- 



