THE CANADIAN ENTOMOLOGIST. 23 



3. Acer campestreX-.. PL (bark-gall on stems). Ohrdruf, 1879. Descr. 



Giebel's Zeitschr. 1879, T. 52, p. 740-745. 



(Achillea millefolhim L. PI. Ohrdruf, fall, 1876. 



Tyleuchus millefolii Tr. Loew. Verhand. Z. B. Gess. Wien., 1878. 



Thomas, Giebel's Zeitschr. 1874, T. 42, p. 523 (separ. p. 12). 



The tuberculous leaf-galls are made by Anguillula, and belong not 



to Phytoptocecidia. I would not omit them, to draw the attention 



of students to this subject.) 



4. Alnus glutinosa Gaertn. PI. Ohrdruf, Sept. 1879 ; Danzig, Prussia, 



Brischke. Giebel's Zeitschr. 1869, T. TyT^, p. 337. Leaf-galls in 

 the angles of the ribs, probably Erhieum axillare Fe'e and Xyloma 

 alneum Persoon. Mr. Brischke's specimen is labelled Syncrista 

 alfii Kirchner. This is published in Lotos, 1863, p. 46. a work 

 not seen by me. 



5. Alnus glutinosa Gaertn. PI. Ohrdruf, 1879. 



Erineum alneum Gaertn. on leaves. 



6. Alnus glutinosa Gaertn. PL Danzig, Prussia, Brischke. 



Bursifex alni Kirchner, Lotos 1863, p. 46. Thomas Progr. p 8, 

 and Add. p. 334, as Cep halo neon pustulatum Bremi. 



7. Carpinus Betulus\-.. PL Ohrdruf, fall, 1879. Frills and curled folds 



of the leaves ; Steenstrup, quoted by Thomas, Addit. p. 324. 



8. Corylus avellanaY.. Acr. Ohrdruf, 1878. Deformation of the buds. 



Thomas, Addit. p. 319 ; Dujardin, Ann. Sc. Nat., 1S51. 



9. Fagus sylvatica L. PL Ohrdruf, 1879. 



Legnon circumscriptum Bremi. Thomas, Addit. p. 341. The 

 margins of the leaves rolled up. 

 [Q. Galium silvestre Poll. Acr. Sudeten Mts., 1872, August. Thomas in 

 Giebel's Zeitschr. 1877, T. 49, p. 384. (Vergruenung, Thorn.) 



11. Lonicera xylosteum\^. PL Ohrdruf, June, 1880. Deformation of the 



margins of leaves. Thomas, Nova Acta Lesp. Carol. 1876, T. 38, 

 p. 277, fig. 25, 26. Legnon confusum Bremi. 



12. Orlaya grandifloraYio^m. Acr. Dolmar, near Meiningen, August, 



1875. Thomas in Giebel's Zeitschr. 1877, F- 49; P- 382 (Ver- 

 gruenung, Thom.) 

 \l. Populus tremulal.. PL Ohrdruf, 1879. Thomas, Acta Nova 1. c, 

 p. 270, pL X., f. 17-20. Galls on the basal glands of the leaves; 

 the mite is named by Kirchner, Lotos, 1863, p. 45, Heliazeus 

 Fopuli ; it is a Phytoptus. 



