38 G The Canadian Arctic Expedition, 1913-18 



Eriophyes species on Salix, labelled Teller, Alaska, July 26, 1913, Frits 

 Johansen. 



This is a small irregular pouch gall projecting on the upper surface of the 

 leaf and with a diameter of 1 to 2 mm. The enlargement is greenish or yellowish 

 iiivrn. Tin-re is a distinct entrance on the lower side of the leaf frequently 

 guarded l>y a rather thick mass of short, procumbent, whitish hairs. Hodgkiss 

 states that this type of gall does not appear to be described and that no mites 

 were found in the deformities. 



species on Salix, labelled Teller, Alaska, July 26, 1913, Frits 

 Johansen. 



These are purplish brown, sparsely haired pouch galls on the leaves, 

 mostly on the under surface, and sometimes so numerous as to deform the basal 

 half or even the whole leaf. They are more or less coalescent. The individual 

 galls have a diameter of 2 to 3 mm., the vestiture is whitish, short, and sparse. 

 Hndirkiss refers this to Eriophyes species, adding that it is possibly new. 



Eriophyes species, labelled Cecidomyia species, galls on Salix leaves, 

 Cockburn point, Dolphin and Union strait, Arctic Canada, August 30, 1914. 



The individual galls are oval or subglobose, have a diameter of 2 to 3 mm., 

 project distinctly on the upper surface, are somewhat smooth though sometimes 

 slightly hairy, rounded elevations and on the under surface are indicated mostly 

 by corresponding oval depressions filled, or nearly filled with a mass of yellowish 

 or whitish plant hairs. Hodgkiss refers this to Eriophyes n. sp., adding that a 

 single specimen, apparently new to science, was found in this material. 



Eriophyes species, labelled Cecidomyia (?) galls on leaves of creeping Salix, 

 August 16, 1915, rearing 92. Locality, Bernard harbour, Northwest Territories. 



The leaves were badly browned and discoloured, though the gall appears 

 similar to the preceding. Hodgkiss states that this type of gall is not mentioned 

 in literature, and that no mites were found in the galls. 



