GALL MLTES. 



359 



CASE this country. It is also common on the Continent Kaltenbach 

 XVII. . -^ . 



in his Pflanzenfeinde tells us that, according to Kirchner-, the 



mite lives on the small yellow shining young leaves, where they 



cause red swollen places, which later on become dark red and 



Pear leaf with galls produced by Typhlodromns pyri. 



Section of gall of ditto. 



black. On the under-side of the leaf a small hole can be 

 seen with a lens in each of the swellings through which the 

 old mites go in and out. When one cuts through one of 

 these swellings horizontally, the cellular tissue seems to be 

 loosened yellowish and blackish, and between and under the 

 loosened part are found the eggs and mites. We have already 

 given a figure of the latter in speaking of M. Scheuten's 

 observations. 



Noi. PiiYTOPTUS ATTENUATUS (Ceratoneon attenuatuni, Bremi?). — 6. Leaves of 

 ' ^' sloe tree bearing galls of ditto ; 7. Sketch thereof. 



This is perhaps the same species as the following, which is 

 entitled to precedence as first described. The gall however is 



