484. General Notes. [June, 
vious writings that this species winters in the larva state, and 
not in the impregnated egg as does the European guercus ; and 
remembering further, that vas¢atrix resembles ri/eyz in wintering 
as larva, it is safe to conclude that the impregnated egg of vasta- 
trix will also hatch the same season that it is laid, and that we 
cannot apply to it the term ‘winter egg,’ which Balbiani applies 
to the impregnated egg of guercus. It is not unlikely that since 
mother a few days after thay are laid. In this we have the true 
‘explanation of the larval hibernation of Phylloxera vastair4, cor 
responding, in fact, with that of P. riley. 
Works on Nortu American Micro-Lerrpoprera.— Lord 
Walsingham’s “ North American Tortricide,’! which lays ms 
foundation for a study of the Tortricids of the Pacific coast, ane 
gives a scientific value to Walker's North American ee has 
i e 
peated in Psyche for October), and by Mr. Grote in Papilio for 
January, 1881. It will be unnecessary to repeat their com- 
ments, but as the book is indispensable to any one engaged in 
studying the parents of our “ leaf-rollers,” we take pleasure : 
calling further attention to it. The number of new species col 
lected by Lord Walsingham in California and Oregon, 1§ very 
large, and there are, besides, several new species described from 
Texas and a few from other parts of the country. _ . 
The illustration and description of Walker’s species has as 
most ably and generously performed. That the coloring of er 
of the figures is faulty, or not in exact agreement with the f 
scriptions in the text, is doubtless due to the poor condition 
the specimens from which Walker described many of his species. 
It has been suggested that in cases where more than one spec! a 
has been described by Walker under the same name, the last pa 
has not been said; but it is evident to us that if either of t ee 
species had been previously named and described, Walker 5 ™ 
. ; FOES - : in the collection of the 
British Miascum, Part Wo Nonth Ameren Vertes, By Lond WALSINGHAE 
London, printed by order of the Trustees. 1879. 4to, pp. 84, with 17 colore 
graphic plates. 
