102 MISCELLANEOUS FOEEST INSECTS. 



cyanea and accredits it to Klug, but Klug described no such species 

 and the figure must stand as a description of cyanea Brulle, as it does 

 not agree with any described species. 



Rev. F. W. Konow (Anal. Mus. Buenos Aires, vol. 6, pp. 397, 398, 

 1899) argues that Syzygonia cyanoptera Klug should be taken as the 

 type of Syzygonia, as this species came first in the list and forms the 

 first group. On these grounds he makes a new genus, Bergiana, for 

 Syzygonia cyanoce/phala Klug. Bergiana and Syzygonia are isogeno- 

 typic, so Bergiana falls as a synonym of Syzygonia. 



PARASYZYGONIA, N. N. FOR SYZYGONIA Konow. 



Since Bergiana Konow is a synonym of Syzygonia, Syzygonia Konow 

 must have a new name, as it is different from Syzygonidea Ashmead. 

 For Syzygonia Konow Parasyzygonia may be used. 



The above-mentioned genera may be separated in the following 

 manner: 



Radial cell of the fore wings not appendiculate (four cubital cells, the second 

 and third each receiving a recurrent nervure; antennae 6-jointed, 

 the third joint longer than the fourth, and the club gradually formed) 



Syzygonidea Ashmead. 

 Radial cell of the fore wings distinctly appendiculate. 



Antennae 5-jointed; third cubital cell receiving the second recurrent 



nervure Syzygonia Klug. 



Antennae 6-jointed; the second recurrent nervure interstitial with the 



second transverse cubitus Parasyzygonia Rohwer. 



Syzygonidea Ashmead. 



Syzygonia cyanea Brulle. 

 Syzygonia Klug (Syn., Bergiana Konow). 



Syzygonia q/anocephala Klug. 

 Parasyzygonia n. 



Syzygonia cyanoptera Klug (type). 

 Syzygonia senea Perty. 



THE WORK OF WILLIAM H. ASHMEAD ON THE TENTHRED- 



INOIDEA. 



The late Dr. William H. Ashmead's work on Tenthredinoidea was 

 confined almost entirely to the genera, very little being done on the 

 species. It was Doctor Ashmead's desire to give generic tables to 

 all the genera of Hymenoptera. Such an enormous task would never 

 have been undertaken by one less enthusiastic or energetic than 

 Doctor Ashmead. With all the routine duties connected with the 

 position held by this untiring worker there was but a limited time 

 for his researches, so of necessity a great deal of the work was done 

 in a hurry. This hurry caused mistakes, and the founding of genera 

 on what would seem to be trivial characters; but the greater number 

 of the genera founded by Aslimead are at least of subgeneric impor- 

 tance. In unpublished manuscript many of the mistakes and omis- 



