NO. 1202. GENERA OF THE ENCYRTINJS—ASHMEAD. 325 



and in it lie included many species that are now relegated to many of 

 our more modern genera. 



From the publication of Dalman's paper down to the year 1856 several 

 new genera were erected by Dahlbom, l^ees, Westwood, Haliday, 

 Waliier, and Katzeburg, either upon some of the Dalmanian species, or 

 upon new discoveries. 



In 1856 a great advance was made in our knowledge of the group 

 by Dr. Arnold Forster, in his well known publication Hymenoptero- 

 logische Studien, Heft II, in which he for the first time properly defined 

 tlie group as a family under the name Encyrtoidai, brings together the 

 known genera in tabular form, and describes no less than twelve new 

 genera. 



A year later, or in 1857, Dahlbom established four new genera, namely, 

 Ageniaspis, JEuscapus, Lonchocerus, and Trimorphocerus. The second is 

 identical with Dinocarsis Forster, the third with Mir a Schellenberg, 

 while the fourth and last seems to have been based upon a male Both- 

 riothorax. 



The Russian General Motschulsky, in 1863, erected his genus Cal- 

 Upteroma^ from Ceylon; while a few years later an Italian, Camillo 

 Eondani, described in the group three additional genera, wretchedly 

 characterized, namely, Tineophaga, 1868, Tineomyza , 1872, and ^elitre- 

 chus, 1877. None of them, however, belong here, but all belong to the 

 family Eulophidis. Tineophaga eqnsds Uulophus GeofHroy; Tineomyza 

 is apparently identical with Tetrastichus Haliday; while Selitrechus, as 

 I have identified it, is a good genus in the subfamily Entedonin?e. 



In 1876 the European genera and species of the Encyrtinte were sub- 

 jected to a thorough revision, by Dr. Gustav Mayr, of Vienna, Austria, 

 in a work entitled Die Europaischen Encyrtiden, biologisch und sys- 

 tematisch bearbeitet. 



In this most valuable contribution Dr. Mayr has shown that several 

 of the previously described genera were synonyms, being based prin- 

 cipally upon the opposite sex or npon apterous or subapterous forms of 

 other genera. Dr. Mayr in his work, however, established 8 new genera, 

 gave full descrix^tions of all the known genera and species, except 

 some of Walker's, besides characterizing 25 species as new to science. 



About the time of the appearance of Dr. Mayr's excellent work on 

 the group, the well-known Swedish entomologist. Dr. 0. G. Thomson, 

 was also engaged in a systematic study of the Encyrtinse, and the result 

 of his labors appeared shortly afterwards.-^ 



The title-page of this work antedates that of Dr. Mayr's, and I was 

 at first inclined to give Thomson priority for certain genera which 

 prove to be synonymous with those of Dr. Mayr's. Since my paper 

 was read, however. Dr. L. O. Howard has most conclusively shown, 



' Von Dalla Torre records this in liis Catalogus Hymeuopteroram under the family 

 Braconidiv. 

 2 Skaodiuaviens Hymenoptera, IV, pp. 112-183. 



