152 NEW YORK STATE MUSEUM 
ADDENDA | 
Trotter's paper in Marcellia 2:63 (“ Descrizione di varie galle 
dell’ America del Nord”) having come to hand after the above 
list was largely in type, his additional forms are here appended, 
references to the others having been incorporated in the text. 
[See nos. 65 and 81] 
Acer leucoderme (white-bark maple) 
163 An erineum in scattered patches mostly on the under sur- 
face of the leaf and slightly dimpled, with a corresponding faint | 
discoloration above. ‘Trichomes same as those of E. pur- 
DUPASCeMS (L & Capiiate). 
Ureouier C8, PLOA, WO, 2 Ga. 
This seems to be of the same general type as our no. 14. 
164. Slender pouch-galls on the upper side of the leaf. 
AMeOUUSP “OB, LOR, MO, WW, ie, ie | Ga. 
Probably referable to the work of Eriophyes acericola; 
SAS Oe MO, i077, 
Fagus americana (ferruginea) (American beech) 
164% A sparse, somewhat dimpled erineum, of a rosy or 
vinose color, on the under side of the leaf, with a corresponding 
discoloration above. ‘Trichomes unusually large, strongly 
capitate. 
DROnier O2, LEO, MO, 12, 01s © 
Referred doubtfully to our no. 65, but presents some striking 
differences. 
Hicoria pecan (pecan) 
CArPvA OlIVASCKLO rims 
165 A narrow inrolling of the leaf-edges, especially toward 
the base; within with ridges, and tufts of hair. 
TROIS? OZ, LOS, MO O, ime, 8 Ky. 
Liquidambar styraciflua (sweet-gum) 
106 A tawny or brown erineum on the under side of the leaf 
close to the petiole, in the angles between the veins. Trichomes 
simple, cylindric, acuminate. 
WOME OR, OLD, MO. 1A | . Nic 
Quercus palustris (swamp oak) 
167 An erineum, mostly on the under side of the leaf, in the 
angles of the veins and also spreading along them. Color ashen. 
Trichomes simple, numerous, cylindrical, grouped in tufts. 
DWitOLUSe OZ, DF, MO BE, WS, 13%, LBA Tenn. 
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