12 TRANSACTIONS, NATURAL HISTORY SOCIETY OF GLASGOW. 



autumn. Thougli recorded in il/i/c. Scot, as living on 

 Sorbiis, I do not know of its occurrence on this plants 



Tay! Dee! Moray! 



England, Europe, America. 



5. P. myrtiUina (Scliubl.) Kunze (D. Keith). 



Dee, Moray ! 



Europe. 



On Vaccinium Myrtllliis ! on the lower snrface of the leaves, 

 in autumn. It was recorded by Dr. Keith from Moray; and I 

 found it very plentiful within a few miles of Aberdeen in 1887. 

 Plants infested by it grow so much taller than healthy plants 

 that its presence becomes very noticeable. I have not observed 

 it on any other Vurc'mium in Scotland; but have gathered it 

 in the Hardanger district, in Norway, on V. uliginosum. 



6. P. Oxyacanthae (DC.) De Bary.— On Crataegus 

 Oxyacanthal and on Pyrus Anciiparial in summer 

 and autumn. 



Chde! Tay! Dee! Moray! Orkney (host-plant intro- 

 duced) ! 

 England, Europe as far as Norway, North Africa- 

 Genus 3. Phyllactinia Lev. 



7. P. sufFulta (Eeb.) Sacc. (P. (nittata Lev., M.S. 

 1827). — On Corylus Avellanal Betxda aJbal and Alnus 

 glutinosa I common in autumn. 



Forth, Clyde! Tay! Dee! Moray! Orkney (on B, 

 alba, introduced) ! 



England, throughout Europe, Siberia, N. America.. 



Genus 4. Erysiplie (Hedwig) DC. 



Several of the species of this genus are of very doubtful 

 value, as the distinguishing characters are frequentlj^ very 

 slight. The subjoined record thus differs considerably from that 

 in 3Ji/coloyia Scotica. 



8. E. Linkii Lev. (M.S. 1836).- On leaves of Arte- 

 misia vulgaris, in autumn. 



Forth, Tay, Moray, Cromarty ! 



England, Central and Southern Europe, Siberia. 



9. E. Martii Lev. (M.S. 1839).— Very common on the 

 leaves of Leguminosae, e.g., Pisum sativmii (Pea)! 

 Lotus major ! Trifolium clubium ! 2\ minus ! T. medium I 



