500 
ZOOLOGICAL LITERATURE. 
PSYLLID^. 
Carsidara, g. n., Walker, Journ. Linn. Soc. x. Zool. p. 329. Robust j bead 
narrower than thorax, excavated above ; antenna3 very slender, shorter than 
body, joints 1 and 2 incrassate ; anterior wings long, longitudinal vein emit- 
ting 4 branches. Sp. C. rnarginalis, sp. n., Walker, 1. c. p. 329, Celebes. 
Tyorttj g. n., Walker, h c. p. 330. Slender; antennae slender, much longer 
than thorax ; anterior wings narrow, with three longitudinal veins united at 
base. Sp. T. congi'ua, sp. n., Walker, 1. c. p. 330, Mysol. 
Micromystes, g. n,, Stal, Kongl. Vet.-Akad. Handl. viii. p. 113. Head 
convex ; eyes large, sinuate in front and behind ; ocelli 2 ; last joint of 
rostrum elongate ; joint 1 of antennae very short, 2 oval ; tegmina nearly twice 
as long as broad, apex widened, rounded, veins 2, united at base ; legs long, 
joint 1 of tarsi nearly half as long again as 2. Sp. Berhe nivea (Fab.). 
APHIDlDiE. 
SiGNORET (Ann. Soc. Ent. Fr. 4® ser. ix. pp. 549-596) pub- 
lishes an elaborate memoir upon Phylloxera vastatrix (Planch.), 
in which, after analyzing the various papers which have ap- 
peared on the insects infesting the vine, thus giving a general 
history of tlie subject, he proceeds to characterize the species 
which has of late years been regarded by the vine-growers of 
the south of France as one of their chief enemies. The family 
Aphididae is divisible, according to Signoret, into the following 
tribes (/. c. p. 577) : — 
I. Antennas of 7 joints 1. Aphidites. 
II. Antenna3 of 6 joints in the winged form. 
A. Winged form unknown 4. Rhizobiites. 
B. Winged form known. 
1. Cubital vein twice bifurcate 2. LaciiNites. 
2. Cubital vein bifurcate or simple 3. Pemphigites. 
III. Antennae of 3 or 6 joints. 
A. Winged form unknown 6 . Tycheites. 
B. Winged form known 6. Cheiimesites. 
t 
It is to this sixth tribe (Chormesites) that Phylloxera belongs, as indi- 
cated in the following table ; — 
I. Antennae of 6 joints. 
A. Anterior wings with 4 oblique veins ; cubital bifurcate. 
1. Vacuna (Heyd.). 
B. Anterior wings with 3 oblique veins, all simple. 
2. Chermes (Linn.). 
II. Antennae of 3 joints 3. Phylloxera (FonQC.'). 
Of Phylloxera quercus (Fonsc.), the type of the genus, Signoret figures a 
tarsus and antennaj (pi. 10. figs. A, B). The different states and forms of 
Ph. vastatrix are described by him in detail, and figured (pi. 10. figs. 1, 2, 3). 
The galls formed by the insects on the leaves of the vine are also repre- 
sented (/. c. figs. 4, 4«). The male is still unknown. 
