REPORT OF THE STATE ENTOIMOLOGIST I907 I49 



Triadenum virginicum (marsh St John's-wort) 

 ( E 1 o d e s V i r g i n i c a) 

 145 All eriiiciim (?) of very fine and numerous black spots on 

 the upper side of the leaves. 



Hagen '85, no. 43 111. 



Very probably a fungus. 



Ulmus americana (American white elm) 

 *I46 Small green to yellowish pocket-galls, more or less spherical, 

 usually on the upper side of the leaves. The mite is E r io p h y e s 

 u 1 m i (Garman). 



Garman '83, p. 137 (Phytoptus ulmi) 111. 



Cook '04, p.86i Ind. 



Parrott '07. N.Y. Agric. Exp. Sta. Bui. 283, no. 5 

 Jarvis '07, p. 59, pi. B, fig. 5-6 Ont. 



Specimens from Catskill, and occurs at Geneva (Parrott in 

 litt.). The mite is reported from Newport (Felt '02). N.Y. 



Ulmus fulva (pubescens) (slippery elm) 



147 A large pouch-gall (up to 2 cm) on the leaves. Differs 

 from the preceding in its unusual size and in often commencing as 

 a cone or deep dimple. 



Jarvis '07, p.63, sixth sp. Ont. 



This may be one of the three undescribed galls on elm enumer- 

 ated by Walsh [Ent. Soc. Phila. Proc. VI:285]. 



*I47^ Irregularly lobed pubescent pouch-galls, resembling 

 those on Tilia (no. 144), and much smaller than the preceding 

 (3 to 6 mm), have occurred abundantly at Catskill this summer 

 (1908), seriously affecting the leaves, although none were ob- 

 served in the previous year. The mites are very numerous, 

 cylindric and whitish. N.Y. 



148 A small greenish pocket-gall on the upper side of the leaves, 

 quite similar to our no. 146, and probably made by the same mite. 



Specimens from Pownal (Mr Burnham). Vt. 



Ulmus racemosa (rock elm) 



149 The same as our no. 146. 



Jarvis 07, p.59 (pl.B, fig. 5-6) - Ont. 



