PERGANDE — NORTH AMERICAN PHVLLOXERIN^E. 223 



Phylloxera caryx-globtdi Riley. Seventh Ann. Rep. Nox. and 



Ben. Ins. of Mo., p. 117. 

 Phylloxera caryce-globuli Thomas. Eighth Ann. Rep. Nox. and 



Ben. Ins. of 111., p. 164. 

 The galls of this species, as far as can be learned from the 

 descriptions of Walsh and Shinier agree quite well with those of 

 c.-scissa and I. simply repeat here the original descriptions. 

 That by Walsli is rather insufficient, somewhat scattered and 

 mixed with other matter, from which it has been sifted. 



Phylloxera caryce-globuU Walsh. Proc. Ent. Soc, I., p. 309, and 

 VI., p. 275. 



"Galls spherical, generally located between the veins that branch 

 from the midrib of the leaflets of the Shag-bark Hickory, and 

 when ripe opens below by a simple, longitudinal slit. Never 

 exceeding one-half or one-third the extreme diameter of caiyce- 

 caulis. 



"Migratory female. — Length to tip of wings .07-. 08 inch. 

 Three specimens. The antennae are scarcely longer than the head 

 and I am unable to distinguish the joints. The stigma is about 

 three times as long as wide, straight posteriorly, slightly hunched 

 anteriorly and acute at both ends. Abdomen blackish [doubt- 

 less from dead and dry specimens, as no phylloxeras have the 

 abdomen black in life] ; the whole costa pale brown, the stigma 

 with a yellow tinge; the third or stigmal vein is not abortive at 

 its origin and the second or middle vein not parallel with the 

 third, but each of the two is slightly convex toward the other." 



Dadylosphcera hemisphericum Shimer. Trans. Am. Ent. Soc, 

 II., p. 386. 



Galls on the Shell-bark Hickory (C alba). 



" Gall No. i. — This is a large subhemispherical gall, situa- 

 ted in the parenchyma of the leaf, generally projecting above the 

 plane of the latter. Structure somewhat thick, tough anddense, 

 the average thickness of the walls being about .05 inch. Color 

 pale whitish-green, much paler than the leaf, the upper surface 

 frequently tinged with red and often quite purple-red. Size : 

 diameter in the plain of the leaf, one-fourth to one-half inch; 

 vertical diameter one-half. 



