41 
Penthina variegana, Hiibn. 
Hedya ocellana, Fab. 
Aspis udmanniana, L. “The Udmannian." 
TINEIDAE. 
Blabophanes rusticella, Hübn. 
YPONOMEUTIDAE. 
Yponomeuta cognatellus, Hiibn. 
Y. evonymellus, L. * Full spotted Ermine.” 
ELACHISTIDAE. 
Elachista argentella, Clerck. 
GALLS. 
The puncture of plant-tissues by insects, mites, and other small 
animals, the deposition therein of ova, and the subsequent develop- 
ment of the animals, induce hypertrophies of various kinds which 
are — as “galls.” An account of the galls observed in the 
gardens, and the names of the insects responsible for them, 
VERAS finds iis adul position here. 
GENERAL. 
By Prof. J. W. H. Trail, F.R.S. 
The few galls enumerated below must represent only a small 
rt of the forms that occur in or near the gardens, but they are 
those seen by myself in passing through at various times. Most 
of them were found in the Queen's Cottage Grounds one forenoon 
in July, 1899. No doubt many others would reward careful and 
systematic work throughout the year; yet the trees, irn bas and 
herbs cultivated in the gardens appear to be remarkably free from 
galls. Those mentioned here were found inire Wscldevely on 
the wild flora. For convenience of reference they are arranged 
d the hod iiia after the method usually followed. 
Hypericum quadratum. Terminal leafbud swollen, its two outer 
leaves touching edge to edge and slightly hypertrophied and 
keeled near their bases, often reddish. Caused by a midge, 
Perrisia serotina (Winn.). 
Tilia. On the species of this genus galls are frequent. 
scences, on midribs of bracts, à ‘peduncles or 
pou. with a smooth surface, yellowish green or i. Each contains 
or more cavities tenanted by larve of a mis Contarinia 
Mia, Kffr. 
