AMERICAN HYMENOPTERA. 319 



THE EVAIVIID.E OF AMERICA NORTH OF MEXICO. « 



BY J. CHESTER BRADLEY. 



In preparing this paper the writer has tried to collect, interpret 

 and arrange what facts he could concerning this very important 

 and much neglected family, both to satisfy his own interest, and to 

 aid other students in their work. The material on which his deci- 

 sions are based is chiefly contained in the collection of the American 

 Entomological Society, where are all of Mr. Cresson's types, except 

 those of Aulaciis abdominalis, which appear to be lost. 



He wishes to express his thanks to Rev. V. A. Huard, who very 

 kindly secured I'Abbe Provancher's types from the Parliament 

 Museum in Quebec and loaned them to him. Also to Mr. Henry 

 L. Viereck who has given him valuable advice and suggestions. To 

 Dr. A. D. Hopkins for specimens of Aulaciis ahdominalis. To Mr. 

 Wm. H. Ashmead for valuable criticism and suggestions. To Mr. 

 R. J. Weith and others. Mr. G. L. Sargent has drawn Figs. 7 

 and 8 of Plate XI for him. 



The only important paper on the family hitherto published is 

 Herr August Schetterer's excellent monograph in the Ann. d. k. k. 

 Nath. Hofm. in Vienna, vol. iv, 1889, 3 parts and 6 plates. It is 

 very exhaustive, but Herr Schletterer has failed to comprehend the 

 true relations of the North American species, probably from lack of 

 material, and according it is of little value to the student of the 

 North American fauna. 



The family was first recognised by Latreille in 1802 as " Evani- 

 ales," and by Westwood as "Evaniidse" in 1843. It is easily dis- 

 tinguished by the fact that the abdomen is attached by a petiole to 

 the dorsal aspect of the propodeum, and never normally between 

 the coxse, and by the existence of a distinct costal cell in the fore 

 wings. Mr. Ashmead in his "Classification of the Ichneumonoidea" 

 has recognized three subfamilies, quite correctly we think. They 

 are readily separable by the following table : See Plate XI, Figs. 

 1, 2, 3, 4. 



* This paper was cominenced iu the Entomological Student, vol. ii, p. 28, but 

 the discontinuation of "The Student" prevented its completion. The first part 

 is here republished and finished, thus enabling the author to make several neces- 

 sary changes. 



TKANS. AM. ENT SOC, XXVII. NOV., 1901. 



