8 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



cal, short-pubescent galls recently described as those which yield in 

 March the agamic fly Neuroterus saltatorius australis Kinsey. No 

 other kind of gall was noticed on the tree. In the spring of 1924 

 the nearly full-grown galls on the leaves were observed again and 

 globular galls collected from the ground beneath still contained 

 larvae indicating that some at least hold over in the galls for two 

 winters before emerging. Adults of irregularis emerged May 24—6, 

 1924. Another tree some miles away at Takoma Park, Md., bore 

 countless number of these spherical galls which were dropping to the 

 ground in the latter part of September 1923, and this tree was one 

 on which irregularis had been very abundant in the spring. These 

 galls were not observed to jump. In Arlington Cemetery, Va., a 

 tree was seen so heavily infested with irregularis galls in the spring 

 of 1920 that on July 4 the tree was observed to have put forth a 

 new crop of leaves as a result. A sending of fresh galls from Mid- 

 dleburg, Va., yielded 487 adults of which 136 were females and 351 

 or 72 per cent males. 



NEUROTERUS MAJALIS (Bassctt) 



The writer has collected galls on Quercus alba at Willow Springs, 

 Evanston (adults emerged June 11-13, 1909), Ravinia, and Fort 

 Sheridan (adults emerging May 30, 1911), 111.; at Miller, Ind.; 

 at Fairfax, S. C. ; at Poplar Bluff, Mo.; at Plummer Island, Md. ; 

 and Washington, D. C. The galls are much more common about 

 Washington than in the Chicago area and are full grown early in 

 May when the young leaves are but 5-6 cm. long. Similar galls 

 were noted on the rock chestnut oak, Q. montnrut., at Washington and 

 at Falls Church and Alexandria, Va., where adults emerged May 

 6-11, 1920 and some seemed to be ovipositing on the leaves. 



NEUROTERUS MINUTISSIMUS (Ashmead) 



The writer has collected galls in Florida at Jacksonville, Day- 

 tona, St. Petersburg, Clearwater, and Ocala, but has never reared 

 adults which are said to emerge in spring. The Pergande collec- 

 tion had galls from St. George also. 



NEUROTERUS MINUTUS (Bassett) 



The galls of this species have been taken at Winnetka, Ravinia, 

 and Moline, 111.; at Plummer Island and Takoma Park, Md. ; at 

 Washington, D. C; at Falls Church and Alexandria, Va.; and at 

 Fairfax, S. C. In the Chicago area the galls are rare and con- 

 tained pupae one year on May 30 and the next year on June 9. 

 Adults were all out at Moline by June 19. About Washington the 

 galls are very abundant especially in 1924 when two large white 



