4 PROCEEDINGS OF THE NATIONAL MUSEUM vor.. 08 



summer of 1922 A. Cosens, of Toronto, learned of its existence and 

 with the consent of Doctor Brodie's daughter, Miss Jessie Brodie, 

 was able to borrow the book and send it to the museum to be copied 

 so that the locality and emergence data for this mass of material 

 is now available. Whenever these notes supplied additional data 

 for the species under discussion in this paper such information has 

 been added. Some records have also been taken from the files 

 of the Eastern Field Station of the Bureau of Entomology for the 

 study of forest insects. 



Except for figure 18 which is from a negative in the eastern 

 field station the photographs and drawings are by the author. The 

 natural size of the galls is represented in the photographs except 

 when otherwise indicated. 



The generic names used are mainly those of the last monograph 

 on the Cynipidae — that of Dalla Torre and Kieffer in Das Tierreich, 

 Lieferung 24, 1910. The names of the oaks are those used in the 

 monograph " The American Oaks," by William Trelease, published 

 as a memoir of the National Academy of Science (vol. 20, 1924). 

 This monograph did not appear until months after the manuscript 

 was prepared and long after labels had been attached to the speci- 

 mens, but the necessary changes in the names of the oaks were made 

 after the paper went to press. Consequently the host oak label on 

 the specimen will not alwa^^s correspond with the name of the oak 

 as published. For example a Q. rubra label will be found on the 

 pin to indicate the northern red oak now known as Q. maxima; a 

 Q. prinus label for the rock chestnut oak, Q. montana/ Q. michauxii 

 for the basket oak, Q. pHnus; Q. fungens for Q. undulata, etc. A 

 photographic name label on each type specimen together with the 

 red type label should obviate any confusion as to identity of type 

 material, despite the discrepancy in the name of the host oak. 



I NEUROTERUS BATATUS (Fitch) 



The woody winter form of the " oak potato gall " on the stems of 

 Quercms alha has been noted at Evanston, Glencoe, Ravinia, and 

 Fort Sheridan, 111.; Miller, Ind. ; Marianna, Fla. ; Washington, 

 D. C, and Blue Hills, Mass. In the Chicago area the agamic females 

 issued April 15-24, 1910, and were observed to oviposit in buds at end 

 of the same twig in breeding jar. In 1913 they emerged April 20-26. 

 At Washington they were emerging March 14, 1921. Brodie found 

 the galls not quite full grown by the 1st of August, adults emerging 

 in various years April 21, 1886. May 6. 1888. May 11-22. 1889, ^Slay 

 7-9, 1890. He " bred over 1,000 of the producers without finding one 

 male. Some appear to come out late in the fall but the greater num- 

 ber early in the summer — ]May." 



