114 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



small kernel, usually of an oval form aud .08 of an inch long; this kernel perfectly 

 free and containing the larva. Color of outer gall pale-green, with usually a pale 

 rosy cheek, and having pale yellowish blotches. Color of inner gall fulvous. The 

 galls had completed their growth, though the leaves had not been out more than a 

 week. Flavor subacid. Flies issued during middle of May. 



Cynips {Neuroterua) rileyii Bassett. 



Received April 25, 1880, from John A. Warder, North Bend, Ohio, some twigs of 

 Quercus castanea thickly covered with the galls of this insect. Others were received 

 March 5, 1883, from J. G. Barlow, Cadet, Mo. Cynipids issue during April and early 

 May. They are preyed upon by a species of Chalcid. 



C. q.-sculpta Bass. 



A translucent gall on Q, imbricai'ia. This is Bassett's C. q. sculpta, which he gets 

 from Q. rubra. The fly has cloudy wings and is probably nubilipennis Harr. Harris 

 probably described the gall, but not correctly. 



Cijnipa ^.-cornigera O. S. 



Found on Q. imbricaria, Ht. Louis, Mo. Galls of the same species were also obtained 

 at Ridgewood, N. J., on Q. palustris, and the flies were issuing for two weeks after 

 September 8, 1871. They are the true sexes and were very active. 



Cynips q.pedunculata. 



Received May 22, 1883, from J. G Barlow, Cadet, Mo., one of those galls, found 

 growing on the margin of Q. obtusiloba. Several were also found Maj^ 23 at Wash- 

 ington, D. C, on leaves of Q. prinos ; a large number of them were, however, de- 

 stroyed by birds which had eaten them, leaving only the petiole. 



The flies were issuing from May 26 to June .'S. Some were confined to some leaves 

 and twigs on the same oak, covered with gauze, but no galls were formed. 



On the 6th of May, 1884, the galls were found to be already fully formed. 



C. q.-venlricosa Bass. ? 



In May, 1870, it was observed that a week before the 8th of that month there was 

 no trace yet of any galls, while on the 8th they were almost fully grown. Large 

 clusters of these galls up to fourteen aud more aggregate around a twig, each ap- 

 pressed to one another and terminating in a prominent nipple. Color, green with a 

 roseate tint and thickly covered with bluish-white hairy pubescence. Inside dense 

 and spongy, becoming harder towards the cell. Flavor pleasantly subacid or rather 

 insipid. Larval cell at base close to twig. Larva quite small at this date. 



By July 31 a very dilferent growth has formed around the twigs of the same trees, 

 caused by several spherical growths around the axis, which, as they enlarge, become 

 closely confluent. 



Their outside is green and roughened with a number of fulvous blotches, very 

 much like the green bark. Flesh tough, yellowish, insipid and leathery, becoming 

 whiter and more leathery towards the twig. It does not look like a fungus, and yet 

 has no trace of insects, though in the more woody center there are pellucid spots 

 which would indicate it to be a gall. 



Similar galls were found by Mr. Bassett in October, 1871, on red oak and on Q. ilici- 

 folia. 



It was found also on Q. imbricaria, May 20, 1873, at St. Louis, Mo. 



Some old galls which were opened contained the dead gall-flies and three different 

 parasites. 



