514 
RHYNCHOTA. 
of the fertile unirapregnated larva (or parthe nogenetio form), and the 
first stage of transformation of the insect passing from the state of 
apterous larva to the winged condition (or pupa). Arch. Sci. Nat. (2) 
liii. pp. 319-330, pi. ii. 
The insect observed to deposit its eggs on the lower surface of vine 
leaves, either in the angles or along the nervures, or in the pubescence 
of the leaf ; Boiteau, in “ LTnt^ret public,’^ Libourne, 2nd, 9th, and 16th* 
Sept., 1875 ; 0. R. Ixxxi. pp. 681, note. 
On sexual individuals and winter eggs; Balbiani, 0. R. Ixxxi. pp. 681- 
688 . 
Hibernating specimens exposed to 6 and 10 degrees below zero, with- 
out harm ; M. Girard, 0, R. Ixxx. p. 436. Nevertheless, uncovering the 
roots of vines in January, so as to kill the insects by cold, is recommended 
by De St. Trivier, tom. cit. p. 637. 
In dry weather, the insect goes down ; in wet, it ascends the vines. 
Villedieu, 0. R. Ixxx. p. 1348. 
On the presence of galls spontaneously developed on European vines ; 
Max Cornu, 0. R. Ixxxi. pp, 327-330. On alterations in vines caused 
by the insect ; id. 1. c. p. 737. On the formation, structure, and decom- 
position of abnormal growths caused by it ; id. 1. c. p. 950. 
General accounts of economy, &c. ; — J. Lichtenstein, Eeuil. Nat. v. 
pp. 105-108, pi. iv. ; Canad. Ent. vii. p. 35 et seq. ; Gerstacker, SB. nat. 
Fr. 1874, pp. 117-130; Ent. Nachr. i. p. 21 et seq\ Wittmack, Die Re- 
blaus. Phylloxera vastatrix, Berlin, 1876, 8vo, figs. ; O. Dietzsch, Die 
Reblaus, Zurich, 1875 ; A. Blankenhorn & J. Moritz, Die Wurzellaus 
des Weinstockes, Heidelberg, 1875 ; Dor, MT. Ges. Bern, 1874 [1875], 
Abh. p. 134 ; J. B. Schnetzler, Bull. Soc. Vaud. (2) xiii. pp. 649-651 ; 
A. J. Cook, Munroe, Michigan, 1875, 8vo, pp. 1-10, cuts, 
M. Girard: Les d^couvertes r^centes sue le Phylloxera (8vo, extr. 
from Bull. Soc. Agriculteurs de France) ; and summary of recent obser- 
vations, especially by Balbiani, in Pet. Nouv. (1876) p. 535. 
The publications of the ‘ Association viticole de I’arrondissement de 
Libourne pour I’^tude du Phylloxera et des nioyens de le combattre, 
1875,’ have not been seen by the Recorder. 
Trimoulet : Quatrieme mdmoire sur la maladie de la vigne, 1874, 8vo 
(extr. from M^m. Soc. Lin. Bordeaux). 
Duclaux : Etudes sur la nouvelle maladie de la vigne dans le sud-est 
de la France. Paris ; 1875, 4to, 9 maps (extr. from M6m. Ac. Sci.). 
Reference to a plate containing figures of various stages, and transla- 
tion of a letter by Marchal, printed in ‘ La Gironde ’ ; C. Kesselmeyer, 
Ann. Soc. Mod. (2) ix. pp. 215-217. 
L. Roesler, Beitrag zur Beantwortung der heute in Frankreich beson- 
ders ventilirten Fragen fiber Phylloxera vastatrix, auf Grund der in 
Klosterneuburg u.s.w. Heidelberg : 1875. 
P. Guerin, Le Phylloxera et les vignes de Pavenir. Paris: 1875. 
P. Mouillefert, Le Phylloxera vastatrix et la nouvelle maladie de la 
vigne; C. R. Ixxx. p. 1259. 
Leuckart, Die Vortpflaiizung der Blatt iind Rindenlause, mit Bcmer- 
kungen fiber die Reblaus, 1875. 
