140 UNIVERSITY OF CALIFORNIA EXPERIMENT STATION. 



Vines in circular spots in vineyard showing stunted growth, those 

 in center of spot worst affected and gradually diminishing outward. 

 Phylloxera, page 99. 



Vines with symptoms similar to phylloxera, but not in well-defined 

 circular spots, nor with interior ones worst affected. Nematodes, page 136. 



HOW TO SEND SPECIMENS. 



Insect specimens should be inclosed in a wooden, tin or strong paste- 

 board box. No provision need be made for air. Accompany specimens 

 with samples of their work. If roots or leaves, wrap in moist news- 

 paper and inclose in tight box to prevent drying. If phylloxera is 

 suspected, place pieces of roots in a firm box that is absolutely tight; 

 .,or otherwise thoroughly seal, to prevent any possibility of escape in the 

 mails. 



