62 PROCEEDINGS OF THE NATIONAL MUSEUM vol.68 



Glencoe under a tree of Q. alha in October, 191G, two adults issued 

 November 23 and five before December 11, 1916; about twenty-five 

 emerged November 1-19, 1917 (one more was found alive in cage 

 February 19, 1918) ; two December 2, 1919, the emergence being dis- 

 tributed over three seasons but beginning the first fall. An adult, 

 determined as this species, was captured at Washington, D. C, De- 

 cember 9, 1923, by H. S. Barber. Brodie collected galls at Toronto 

 October 10, 1886, and reared adults November 24, 1888. He collected 

 others December 1, 1887, and reared adults November 24, 1888. 

 From other galls gathered in December, 1896, the first emergence 

 of the apterous females was on April 17, five months from collection 

 of the galls and the last emergence was November 10-16, 1899. 



A similar gall occurs on Q. mueJilenhergii at Holton and Manhat- 

 tan, Kans. 



CYNIPS DIMORPHUS Beutenmucller 



The type flies of this species are said to have emerged in the spring 

 from galls collected the preceding year. In the fall of 1914 the 

 writer collected galls at Highland Park, 111., and reared adults on 

 April 20 and 25, 1916. On October 1, 1916, some of the galls in the 

 cage were opened and living flies found which would have emerged 

 in the spring of 1917 but some of the largest galls still contained 

 larvae which would not have transformed until the fall of 1917 and 

 not have emerged as flies until at least as late as 1918. Thus the 

 emergence does not seem to begin until the second spring and is dis- 

 tributed over at least three seasons. 



The writer adds the following localities for the species, based on 

 the observation of the galls on Q. macTOcarya^ except when otherwise 

 stated : Bluemont, Virginia, on Q. alba; Washington, D. C, on Q. 

 alba and Q. moniana ; Forth Worth, Tex. ; Ithaca, N. Y. ; Cedar Point 

 and Holton, Kans.; Nebraska City, Nebr. ; Walnut Grove and 

 Becker, Minn.; Wilmette, AVinnetka, Glen Ellyn, Glencoe, and Mo- 

 line, 111. William Beutenmucller writes that the galls were very 

 common at Highwood, N. J., in the fall of 1922. 



CYNIPS HELDAE Fullaway 



The original description gave no indication on what part of the 

 plant the galls of this species are produced (the types are detached 

 specimens). The writer has collected the galls at Chico, Lakeport, 

 and Bartlett Springs, Calif. They are stem galls attached in clusters 

 to the drooping branches of large trees. In August they were full 

 grown but too immature for rearing, and in ]\lay only empty galls 

 were seen. A. W. Gambs, of Cottonwood, in Shasta County, col- 

 lected galls in January from which some flies had escaped, and 

 others were still engaged in chewing their way out on January 23. 

 About half of the galls still contained full-grown larvae. 



