INSECT GALLS 
differs from it only in ending in a short, tapering 
point. 
Holcaspis bassetti, Gillette. Host Quercus ma- 
crocarpa, Michx. Produced in clusters surrounding 
the stem. When not deformed by crowding, the gall 
is circular in outline at the base, but tapers to a dis- 
tinct point. 
Philonix hirta, Bassett. Host Quercus macro- 
carpa, Michx. A spherical gall originating from the 
midrib of the leaf; its surface is faceted in appear- 
ance. 
Philonix nigra, Gillette. Host Quercus alba, L. 
This species is also spherical in form, but the surface 
is felty in appearance, due to a dense pubescence. 
Philonix erinacei, Beut. Host Quercus alba, L. 
Usually ellipsoidal in shape, springing from the mid- 
rib of the leaf. The surface is again in this case 
faceted, and each facet terminates in a distinct. tri- 
chome. 
On the hills of High Park a few specimens of 
Rosa blanda, Ait., are found. These plants act as 
hosts for a number of species of the genus Rhodites. 
Infesting the stems are found Rhodites multispinosus, 
Gillette, Rhodites globuloides, Beut., Rhodites dichlo- 
cerus, Harris, while from the root originates Rho- 
dites radicum, O.S., and from the leaves are pro- 
duced Rhodites bicolor, Harr., Rhodites lenticularis, 
Bassett, Rhodites ignotus, O.S., Rhodites gracilis, 
Ashm., and Rhodites nebulosus, Bassett. Near the 
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