34 



Cincinnati Society of Natural History. 



BIOLOGICAL NOTES ON REARED PARASITIC HY- 

 MENOPTERA OF OHIO AND INDIANA, WITH 

 DESCRIPTIONS OF THIRTEEN NEW SPECIES, 

 BY W. H. ASHMEAD. 



By F. M. Webster, M. Sc. 



In this paper the author has included species of Hymen- 

 optera reared by himself in Indiana and Ohio, exclusive of 

 those described in Bulletin No. 3, Technical Series of the 

 Ohio Agricultural Experiment Station, and in the Proceed- 

 ings of the Indiana Academy of Science, 1892, excepting 

 such as were yet undescribed at the time the latter publica- 

 tion was prepared. 



These hymenoptera are largely parasitic, though it has not 

 been possible in all cases to give the host. In the first 

 mentioned publication, ten new species and one new genus 

 are described by my friend, Mr. W. H. Ashmead, of Washing- 

 ton, D. C, and following this paper will be found descriptions 

 of thirteen additional species by the same gentleman, as with 

 the others, the types having been reared by mj-self. This 

 material, together with considerable additional, not yet ready 

 for description, was reared during the last ten years, during the 

 first eight of which I was connected with the U. S. Depart- 

 ment of Agriculture as special agent, and attached to the 

 Indiana Agricultural Experiment Station, and later, to the 

 Ohio Station, and still later, as the entomologist of the latter 

 Station. The object has never been to collect material of 

 this sort, but to rear it, and thus secure as much biological 

 information as was possible. In a number of cases the host 

 insect was not recognizable, and in others it is quite possible 

 that the parasite may be secondary, though the attempt has 

 been made to indicate such, where the fact was known. No 

 attempt has been made toward any systematic arrangement 

 of the species in the order in which they would fall in any 



