February^, 'IG] MCCONNELL: PLI:UROTROPIS EPIGOXUS WALK 145 



methods of putting entomological information before the farmer. 

 This is a point where many of us fail. We get lots of information on a 

 certain problem, publish it and then often send it to the wrong men 

 who throw it into the waste basket or allow it to lie on dusty shelves 

 unread and unused. 



Mr. F. M. Webster: In 1891 Dr. C. V. Riley attempted to 

 introduce a European parasite of the Hessian fly. It was placed in 

 the field but little has been heard concerning it up to the present 

 time. The facts concerning its introduction and recovery are given 

 in the following paper by Mr. W. R. McConnell. 



SUMMARY OF FACTS ABOUT THE INTRODUCTION OF 

 PLEUROTROPIS EPIGONUS WALK 



By W. R. McCoxxELL 



The species was originally described under the name Entedon 

 €j)igonus Walker, and apparently is the same as Semiotellus nigripes 

 Lindeman, as Dr. Riley compared specimens with Walker's types. 

 (Forbes, Insect Life, 1892, 73.) The species is now placed in the 

 genus Pleurotropis. 



Introduction into America 



1891 — Riley received infested puparia from Mr. Fred Enock, of 

 London, England, during the spring of that year. 



This infested material was distributed to Forbes in lUinois, Cook 

 in Michigan (Agricultural College), and Fletcher in Canada (Ottawa). 

 (Forbes, hisect Life, V, 1892, 73; Riley, Insect Life, 1893, 133-4.) 



No report from Cook and Fletcher, as far as I can find. 



Forbes (Insect Life, V, 1892, 73) reported rearing adults from the 

 original material in a small enclosed plat experiment, but up to August 

 15, 1892, had recovered no specimens from fields in which material 

 was distributed. No further statement regarding the success of 

 Forbes' experiments has been found. 



1894 — Material from Enock placed in field at Fredericktown, Md., 

 and on farm of C. Morgan Eldridge at Cecilton, Md. (Howard, 

 Insect Life, VI, 1894, p. 375.) (Fredericktown must be the Frederick 

 of today.) 



No further report from the Fredericktown introduction. 



At Cecilton, Md., Ashmead succeeded in sweeping up one d" during 

 May of the next year. (Howard, Insect Life, VII, 1895, 414-5.) 



There seems to be no further records until our rearings at Hagers- 

 town began in 1915. 



In the following table is given the record of our rearings at the 

 Hagerstown Laboratory: 



