1288 General Notes, [December, 
California (American Journal of Science, Feb., 1871, p. 102),— 
ATF] 
_ SOME RECENT DISCOVERIES IN REFERENCE TO PHYLLOXERA!— 
Every new fact in the life-history of the insects of this genus has 
an exceptional interest because of its bearing on the destructive 
grape-vine Phylloxera. The genus is most largely represented 
in this country by a number of gall-making species on our differ- 
ent hickories, and the full annual life-cycle of none of them has 
hitherto been traced. The galls are produced, for the most part, 
in early spring; the winged females issue therefrom in early sum- 
mer; and thenceforth, for the remainder of the year, the where- 
abouts of the insect has been a mystery. The author has for 
several years endeavored to solve the mystery, and at last the 
stem-mother (the founder of the gall), the winged agamic females 
(issue of the stem-mother), the eggs (of two sizes) from these 
winged females, the sexed individuals from these eggs, and the 
single impregnated egg from the true female, have been traced in 
several species. There is some evidence, though not yet abso- 
lutely conclusive, that this impregnated egg hatches exception- 
ally the same season; also, of a summer, root-inhabiting life. In 
Phylloxera spinosa, which forms a large roseate somewhat spinose 
gall on Carya alba, and which has been most closely studied, the 
impregnated egg is laid in all sorts of crevices upon the ve 
and bark and in the old galls, in which last case they fall to the 
ground. “Il aal 
Up to this time they have remained unhatched, and wil ko 
probability not hatch till next spring, thus corresponding to Ms 
“winter egg” of the grape Phylloxera. 
COLEOPTERA INFESTING Prickty Asu.—In his “ Notes ele 
sects bred from Prickly Ash” (Trans. Amer. Ent. Soc., es oe 
Dr. Shimer states that “ among the Coleoptera obtained by wE 
ing the prickiy ash bushes, I observe numerous SPPN Tn 
small gray snout-beetle, an undescribed species of Cen fog 
The species referred to is undoubtedly Zygobaris consper a 
scribed by Dr, Le Conte in the Rhynchophora of N. A, P PA 
and the seven typical specimens were in all probability 
Dr. Le Conte by Shimer, and not, as stated (/. ¢.), by ion, but by 
conspersa is, in my experience, peculiar to Xanthoxy my ileg 
no means occurs wherever this tree occurs. I have n abe ae. 
to find the earlier states of the species, but I have ea p 1 ¥ 
the small elongated scars occasionally to be seen on 4 by Ame 
branches and which resemble those so frequently eee = 
peloglypter on Ampelopsis, are the work of the Le with 
f the other species mentioned by Shimer 1n peer d to that 
prickly ash, only Micracis suturalis seems to be con wood ofall 
tree. “His Liopus xanthoxyli bores in dead and dying WOW” 
fore the A. A. A. 5. at Ma 
1 Abstract of a paper by C. V, Riley, read be 
