2 20 DAVENPORT ACADEMY OF SCIENCES. 



ocelli yellowish, broadly bordered at inner side with dark brown. 

 Two small dusky spots behind ocelli. Anterior angles of pro- 

 thorax pale dusky, and two small, dusky, transversely linear 

 spots, usually more or less indistinct, on the middle of the pro- 

 thorax. Wings faintly dusky, the stigma, subcosta anddiscoidal 

 vein darkest, the two branches very faint, though normal in their 

 course. Surface of wings quite profusely granulate or scaly. 

 Antennae dusky, short, scarcely as long as the head is broad, the 

 two basal joints almost equal in length, the first slightly longest 

 and stoutest, narrowest at base, truncate at tip; the second almost 

 as long as wide, rounded and stoutest at tip ; both joints quite 

 distinctly scaly; joint three is rather robust, diminishing but 

 slightly and gently toward the base, connecting with the second 

 joint by a very short though well separated petiole. There is no 

 basal constriction and, apparently, only the upper sensorium 

 present, which is rather stout and somewhat oval ; surface quite 

 coarsely scaly with the lower third sharply annulate ; from 3-4 

 distinct, short bristles surround the apex, the two terminal ones 

 stoutest. 



PHYLtOXERA CARY^-SCISSA Riley. 

 PI. IV., fig. 25; PI. IX., figs. 55, 56. 



Phylloxera caryce-scissa Rifey. Am. Ent. Vol. III., n. Ser. Vol. 

 I., p. 230. 



This gall, as already indicated, bears a close resemblance to 

 that of hemhpherica but it will be unsafe to consider them iden- 

 tical until further careful study is made of the latter species. 



The first galls of caryae-scissa were received in 1880 from Mr. 

 W. H. Ashmead, of Jacksonville, Fla., found growing upon 

 Hicoria alba. Since then the same species has been occasionally 

 observed in the vicinity of Washington, always growing upon 

 the leaves of Hicoria tomentosa. It is a rather rare species, and 

 occurs for the most part singly. 



In general appearance it closely resembles that of /%. rimosalis, 

 for which it might readily be mistaken, but the upper surface 

 of c.-scissa is never flattened, as in rimosalis, while the orifice 

 is never round or nipple-like, but always a transeverse slit. All 

 the different forms of insects, from the stem-mother to the winged 



