484 PROCEEDINGS OF THE NATIONAL MUSEUM. 



The Connecticut Agricultural Experiment Station in New Haven 

 is the depository for the types of five species, a study of which was 

 made possible by the issuance of a special authorization by the 

 Bureau of Entomology for the journey to New Haven. None of the 

 type specimens of Saj^'s four common species is now in existence, 

 but an abundance of material in the National Collection placed in 

 these species by Ashmead and Viereck has been carefully checked 

 with the original descriptions and is regarded as valid. Types of 

 six other species have not been studied — that of nephoptericis Pack- 

 ard, the location of which is uncertain; of ninigretoi'U7n Viereck, 

 which seems to have disappeared; of carpatus Provancher (not 

 carpatus Say), which has been destroyed; of aniericanus Lepeletier, 

 evidently deposited in an European collection; and of (jlomemtus 

 Linnaeus and melanoscelus Ratzeburg, European species wdiich have 

 been introduced into this country. Since nephoptericis Packard 

 and carpatus Provancher are unrecognizable from the original de- 

 scriptions they have not been included in the key to species ; ninigre- 

 torum Viereck has been included, but not separated from ensiger Say; 

 the writer's conception of aniericanus Lepeletier is based on the 

 original description and on specimens in the National Collection so 

 labeled by Ashmead. A large amount of valid material of melanos- 

 celus Ratzeburg was studied at the Gipsy Moth Laboratory, in Mel- 

 rose Highlands, Massachusetts, and many large series, both European 

 and American, of glomeratus were available in the National Col- 

 lection. 



The writer desires to express his deep appreciation and sincere 

 gratitude to A. B. (xahan, of the Bureau of Entomology, for much 

 helpful advice in the course of the work, for his kindly and valuable 

 criticism of the manuscript, and for aiding generally in every pos- 

 sible way in the preparation of this paper. Acknowledgment of 

 indebtedness is also due Dr. W. E, Britton, of the Connecticut Agri- 

 cultural Experiment Station, for the opportunity of examining the 

 type material deposited at New Haven. For the loan of collections 

 of Apanteles at their respective institutions the writer is indebted 

 to Prof. G. A. Dean, of the Kansas Agricultural Experiment Station ; 

 Prof. S. A. Forbes, of the University of Illinois; Prof. Harrison 

 Garman, of the Kentucky Agricultural Station; Dr. F. A. Fenton, 

 of the Iowa Agricultural Experiment Station; and Prof. C. P. 

 Gillette, of the Colorado Station. 



