The Scottish Naturalist. 17 



They differed from the galls of A. anient i in being more 

 than twice as large, oval, or slightly obovate, and smooth 

 externally, save that some presented a longitudinal furrow- 

 on one side. The walls are very thin. I could not 

 find any of the makers, but they probably belong to the 

 genus Andricus. (70) Galls of? Aphilothrix solitaria Fonsc. 

 ( = Cy nips f err iiginca Hart. J were sent me from near Perth 

 by Dr. Buchanan White. They are axillary, sessile^ 

 surrounded at the base by leaf scales ; ovate, about 

 }( hy }i inch, terminated by a short cone, externally 

 reddish-brown and wrinkled ; the walls are rather thin 

 As I have not reared the insect I am not sure of the 

 correctness of my identification. Mr. Cameron has 

 sent me galls of A solitaria from near Glasgow. 



CoRYLUs AVELLANA L. — In Spring and early summer one may 

 often find the buds of the hazel enlarged, forming round 

 bodies yi^Y^ inch m diameter, and composed of enlarged 

 and closely imbricate leaf scales, and abortive leaves, all 

 covjred with a dense coating of greyish-white transparent 

 hairs, among which live multitudes of a species of Fhytoptus 

 ( — Calycophthora avellance Amer). The galls are mostly at or 

 near the ends of the twigs. They are common at 

 Banchory. 



Betula alba L. — (b) (c) and (d) {Sc. N'at. II. 304.) and (e) 

 have been described as fungi, under the names Erinenm 

 roseiim Schultz, and E. betulinuni Schum., and also in 

 Greville's Monograph of the genus Erinenm (Edin. Phil. 

 Journ. vi. pp. 77, and 79 tab. iii. ff 9. and 16), under 

 the names E. bet nice D.C. and E. betulinuni Schum. 

 They are patches of small vesicles situated in shallow 

 depressions of the leaf, yi — yi inch across, usually 

 appearing on the lower surface, and then white or 

 yellowish [E. betulinuni Schum. J, less frequently on the 

 upper surface, where they are purplish-red {E. roseuni 

 Schultz). The vesicles are very small, and stalked. Among 

 them live multitudes of the mites {Fhytoptus). I have 

 found these galls wherever I have looked for them. 



Agrostis canina L. — From a friend this summer I received 



a stalk of this grass bearing on the main axis towards its 



' apex, just at a whorl of branches, an oval swelling, yi^ x 



Yig inch, naked, nearly smooth, and purple externally ; it 



opened by a small hole between the branches \ the walls 



