NOTES AND MEMORANDA. 103 



dental contact with the red-coloured plastids may simulate 

 flagella. 



Mr. Worthington Smith's paper on the Resting Spores of 

 Peronospora infestans. — By an unfortunate blunder on the part 

 of the Woodbury-Type Company both the photographs on 

 Plate XIX were reversedj and the upper one was also in- 

 verted in the mounting. The key (Plate XX), of course, 

 fails in consequence to correspond with the photographs. 



