306 =Reporr or THE DEPARTMENT OF ENTOMOLOGY OF THE 
(13) Eriophyes prunt Schoene. (in MS.) 
Produces galls on the leaves of the wild plum, Prunus 
americana Marsh. This species has been confused with FE. padi 
Nal., but it differs from the latter in that the accessory setae are 
present. The galls are similar to Ceratoneon attenuatum Bremi, 
caused by Eriophyes padi Nal. on Prunus padus L. 
(14) Ertophyes phloeocoptes Nal. 
On Prunus domestica L., in Central Europe, Italy and the 
United States. The mites cause roundish galls at the base of buds 
and new growth. It is said to reduce the size of the fruit and crop 
production. 
(15) Phyllocoptes cornutus Banks. 
On peach, Amygdalus persica L. This species lives free on 
peach leaves and occurs in the Eastern States. The mite is said 
to produce a sort of a silvery sheen upon the leaf which is readily 
discernible when the light in shining on it. 
(16) Eriophyes fraxint Garman. 
Produces depressed wart-like galls on the leaves of the 
green ash, Fraxinus viridis Michx. 
(17) Eriophyes gossypii Banks. 
Found upon cotton in the West Indian Islands where it is 
very destructive. The mite causes galls which, when abundant, 
make the leaves unshapely. Severe infestation seriously affects the 
value of the cotton crop. , 
(18) Ertophyes oleivorus Ashmead. 
Attacks the orange and the lemon and is a destructive pest 
of these fruits in Florida and California. It is popularly known as 
the rust mite because of the russetted appearance of the fruit, at- 
tending the injuries by the mite. ? 
THE PEAR AND APPLE MITES. 
The mites infesting apple and pear foliage were, with one excep- 
tion, first recorded from Europe. Five species are there recognized 
thriving upon these fruits, which are Eriophyes malinus Nal., 
Eriophyes pyri (Pgst.) Nal., Eriophyes pyri var. variolata Nal., 
Epitrimerus pyri Nal., and Phyllocoptes schlechtendali Nal. Of 
this number Eriophyes pyri is regarded as the more important 
