Acorn galls 
Oallirhytis balanaceaWeldi 40J. Fig.64. A pip gall on small acorns of the 
in^Oo? 1 88a80n, 6mm,in dia *' green,bare,secreting honeydew,dropping 
Oallirhytis fruotuosa Weld. 4?2. Fig.70. A stone gall inaide a mature acorn 
in the rail. 
corrugis ( Ba80 -). 416. A stone gall not distinguished from above. 
Amphibolipe prunus Oresson. 291. Fig.59. A plum gall on side of acorn cup. 
Bud galle 
Amphibolipe globus Weld. 285. Fig.294. Agamic gen.galls slightly pointed at 
, gr98n ’ U P to 14 >“• ln dia„ wall thin, dropping in late August. 
Amphibolipe acuminata Ashm. 275. Fig.112. Spindle-shaped, up to 58 nmulong 
by 14 mm. in dia«, from mid—April to early May. 
Andricus ellipsoidal!* (Weld). J04. Fig.94. Spindle-shaped, blunt at both 
P Up 14 “• lon S» smooth, mottled, dropping when mature ln May. 
Oallirhytis gallaestriatde Weld. 4J5. Fig.107. Spindle-shaped with a long 
stalked base, up to J1 mm. long, in late summer,from weak lateral buds, 
Stem galls 
Woody stem swellings 
Oallirhytis corntgera (O.S.). 41$. Fig, 117. Horned Knot Sail. Abrupt, cuts 
like cheese when growing in May-J^ne, becoming woody, horns finally 
protruding and even dropping out. 
Oallirhytis punctata (O.S.). 471. Fig.129. Oak Knot Gall. Abrupt,completely 
encircling branch, outs like cheese when immature. 
Oallirhytis seminosa (Bass.). 478. Fig.128. Abrupt, surface very Irregular, 
cell8 very numerous. 
Detachable 
Andricus ooronus Beut. J01. Terminal oluater of green ribbed galla pointed at 
both ends ln early spring, larval cell central, dropping when mature. 
Dryocosmus floridensls (Beut.). 596. Fig.297. A roaette .of green braots 
sessila on trunk or twigs,larval coll’ln oenter. 
Terminal cluster of spindle-shaped galls with reflexed hairs at apex, not 
ridged, 6 mm. long, not smooth. From Philadelphia, Pa. in Apr. Flg.J02. 
Cells hidden under bsurk 
Oallirhytis medularis Weld. 447. Fig.166. Delia in the pith. 
Basaettia ceropteroides (Base,). 578. Slight enlargement of baee of the 
annual growth in July, containing a few larval oelle just under the 
bark in the wood. Entered from literature. 
Leaf galls 
Detachable 
Oallirhytis furva Weld. 4j5.Fig.212. Small cluster of globular galla, J-4 
mm., each covered with short, straight brown hairs, upper side, fall. 
Zopheroteras guttatum Weld. J64. Fig.248. Spherical, 1.45-2.5 mm. with 
purple spots, single on secondary vein on under side ln fall. 
Integral 
Andricus ostensackenii (O.S.). J19. Small oak apple, 7-9 mm.,projecting on 
both sides of leaf, larval cell supported by fibers, 
Oallirhytis modesta (OIS.). 450. Fig.265. Hard confluent parenchyma thiok- 
eninga projecting on both sides of leaf. 
Dryocosmus palustrls (Ashm.). 400. Fig.181. Globular, 10-17 mm. in die, with 
a free-rolling cell, wall 1 mm. thick, in early spring. 
Dryocosmus notha (Ashm.). J99. Fig.182. Green, wall thin, with a free- 
rolling cell, tip prolonged into a Bharp point on upper surface. 
allirhytia favosa (Bass.), 427. A parenchyma thickening projecting on both 
sides of leaf, inner structure in crose-eectlon suggests a honeyoomb, 
not succulent. Adults emerge in late July or August. 
Amphibolipe spongifica (O.S.). 294. Spongy Cak Apple. 
69 
