BRUES: PARASITIC HYMENOPTERA. 119 



Mesochorus aboriginalis Brues, Bull. M. C. Z., 1910, 54, p. 87. 

 Miocene; Florissant, Col. 



Mesochorus carceratus Brues, Bull. M. C. Z., 1910, 54, p. 85. 

 Miocene; Florissant, Col. 



Mesochorus cataelysmi Brues, Bull. M. C. Z., 1910, 54, p. 86. 

 Miocene; Florissant, Col. 



Mesochorus cressoni Scudder, Tertiary insects N. Amer., 1890, p. 

 609 (Lithotorus). 



Oligocene; Green River, Wyoming. 



Mesochorus dormitorius Brues, Bull. M. C. Z,, 1910, 54, p. 88. 

 Miocene; Florissant, Col. 



Mesochorus lapideus Brues, Bull. M. C. Z., 1910, 54, p. 84. 

 Miocene; Florissant, Col. 



Mesochorus revocatus Brues, Bull. M. C. Z., 1910, 54, p. 86. 

 Miocene; Florissant, Col. 



Mesochorus terrosus Brues, Bull. M. C, Z., 1910, 54, p. 86. 

 Miocene; Florissant, Col. 



Porizon sp. Brischke, Schrift. naturf. gesellsch. Danzig, 1886, 6, 

 p. 279. 



Lower Oligocene; Baltic Amber. 



Porizon exsectus Brues, Bull. M. C. Z., 1910, 54, p. 89. 

 Miocene; Florissant, Col. 



Demophorus antiquus Brues, Bull. M. C. Z., 1910, 54, p. 89. 

 Miocene; Florissant, Col. 



ALYSIIDAE. 



Alysia exigua Brues, Bull. M. C. Z., 1910, 54, p. 91. 

 Miocene; Florissant, Col. 



Alysia petrina Brues, Bull. M. C. Z., 1910, 54, p. 91. 

 Miocene; Florissant, Col. 



BRACONIDAE. 



Euphorus indurescens Brues, Bull. M. C. Z., 1910, 54, p. 92. 

 Miocene; Florissant, Col. 



