138 NEW YORK STATE MUSEUM 



*89 Both edges of the leaf inroHed toward each other on the 

 upper surface. The mites not observed, but believed to be 

 Phytoptid. Compare the work of Eriophyes tetratrichus 

 (Nalepa) on Tilia europaea [Connold '01, Brit. Veg. Galls, 

 p. 166, pi. 6y]. 



Specimens from Albany (Mr Young). N.Y. 



*9o A deformation of stem and twigs producing large irregular 

 galls, the " Knospenwucherungen " of the Germans. The mite is 

 Eriophyes populi (Nalepa). 



Nalepa, Vienna 1890, 43, pi. 3, fig. 6 



Banks '07, p.621 and in lift. N.Y., Col., Idaho 



Jarvis '08, p.93, sixth sp. Ont. 



Occurs in Europe on Populus tre m u 1 a ; this is C a 1 y - 



cophthora populi Amerling and B a t o n e u s populi 



Kirchner, Professor Banks (in litt.) gives me the New York 



record, "Lebanon Springs, July 11, 1895, W. H. Harrison." 



Potentilla canadensis (five-finger) 



91 A whitish erineum resembling minute tufts of grass, numer- 

 ous on both sides of the leaf. Trichomes simple. 



Garman '92, no. 3, fig. 3 Va. 



Potentilla pennsylvanica (prairie cinquefoil) 



92 "Erineum on the leaves; somewhat doubtful." 



Hagen '85, no. 53 Saskatch. 



Compare with the preceding. 



Prunus americana (wild plum) 



*93 A very long, slender pouch-gall, green or whitish, on the 

 under side of the leaf. The mite is probably Eriophyes 

 pruni Schoene mss, (Parrott '07, N.Y. Agric. Exp. Sta. Bui. 

 283, no. 13), which Professor Banks (in lift.) would refer to E. 

 pr u n i - c r u m e n a [Walsh 1868, 111. ist Rep't, p.55] Banks, 

 Catalogue of Acarina, p.621. 



Specimens from Normansville, Albany co. N.Y. 



? Jarvis '07, p.6i, third sp. Ont. 



Jarvis's description implies that his gall was on the upper side 

 of the leaf; otherwise it agrees with this. 



