APHIDIDiE. 
487 
d’un nouveau mode d’emploi des insecticides. Bordeaux : 1874. 
A. Duponchel ; Le Phylloxera, gu^rison probable de la vigne par un 
traitomont prdventif, physiologiquo ot naturol. Montpellier ; 1873. 
E. Blanchard : Le Phylloxera de la Vigne. Revue des Deux Mondes, 
Nov. 1, 1873. T. Malvezin : Letter to the Chamber of Commerce of 
Bordeaux, 1874. Practical instructions on the manner of observing the 
malady and the Phylloxera^ addressed to viticulturists, have been pub- 
lished by the Viscount Maliier, Prefect of the Department of Saone and 
Loire; and destructive agents noticed by Roiiart, in “ Le Cultivateur 
de Sud-ouest et du Centre,” i. No. 12, p. 250. For general observations, 
cf. G. Mingaud, Bull. Soc. Sci. Lyon, i. p. 29. 
The winged perfect insect observed, without previous copulation, to 
deposit two little sacs on the leaves of Quercus coccifera. The sacs soon 
open, a ^ insect proceeding from one, and a ? from the other, and these 
at once copulate. The ^ sac is single, but the ? is often double (as two 
pupae are observed sometimes in one cocoon). The insects proceeding 
from those sacs or pupae have no rostrum. J. Lichtenstein, Bull. Soc. 
Ent. Fr. (5) iv. p. clxxviii. 
This statement received with doubt ; the insects at all events are not 
P. vastatrix, but P. lichtensteinij Balbiani, and P. corticalis, Kalt. (? = 
rileyi, Licht.). Signoret, tom. cit. p. clxxxv. This observer has a vine 
on which he has ever since 1869 placed all the Phylloxerce sent to 
him, and which is apparently none the worse for that treatment ; 
p. clxxxvi. 
Lichtenstein, tom. cit. pp. cxcviii.-cci., states that Signoret {supra) has 
confused “Kermes” corticalis, Kalt., which lives on the pine, with 
Phylloxera corticalis^ Kalt., found on the oak. P. Uchlensteini^ Balb., = 
corticalis, Kalt., = rileyi, Licht., for which priority is claimed. [P. rileyi 
iS' merely mentioned in Rep. Ins. Mo. iv. 1872, p. 66, and was only 
described in 1874, and then by Riley, not Lichtenstein.] A tabulated 
list is given of the known species. Cf. Signoret, 1. c. p. ccxxviii. 
Numbers of individuals in all stages found in October, 20 centimetres 
below the surface ; M. Girard, tom. cit. p. ccxxx. ^ 
Vitis vulpina, L., called “ Scuppornong ” in America, effectually resists 
the Phylloxera ; J. Lichtoustein, 1. c. p. xxiii. 
Observations on the different portions of the tree affected by the same 
species in America and Europe ; id. I, c. pp. liv. & Iv. 
Planchon’s supposed parasite Tyroglyphus {echinopus, Rob. & Fum.) 
has probably nothing to do with Phylloxera ; Fumouze, tom. cit. 
p. xcviii. 
Phylloxera quercus and vastatrix. Development and habits discussed 
by Gerstaecker, SB. nat. Fr. 1874, pp. 117-130. 
Phylloxera quercus ; general notes by F. Walker, Ent. vii. p. 208. 
Balbiani, OR. Ixxviii. pp. 1024-1027, completes his account of its life- 
history by recording the discovery of the young Phylloxera, hatched in 
April from a fecimdated egg laid in the preceding autumn. 
A Phylloxera, uniting the characters of the Aphididic and 
Coccidce, found among Coccus aceris ; V. Signoret, Bull. Soc. Ent. Fr. (5) 
iv. p. ccxxxix. 
