890 
Annual Report of New York 
BUFFALO TREE-HOPFER. ITS EGOS. IN A ROW OF HOLB8. 
These eggs are shining, yellowish-white, cylindrical, with rounded 
ends, and about four times as long as thick, their length being a 
little more than the tenth of an inch, and exactly filling the holes 
for about two-thirds of their length. 
If a twig be paired off with a knife upon the side opposite to 
the scar and crack, until the ends of the eggs are come upon, these 
are there observed to be arranged in two rows, although the holes 
in the bark are in a single row. And in splitting a twig in two to 
expose the holes, if it be done accurately, half the eggs will remain 
in one piece, and half, alternately with these, will be in the other 
piece. This curious arrangement is evidently caused by the artistic 
manner in which the ovipositor is inserted into the twig. Instead 
of sinking this implement inward through the exact centre of the 
pith the insect gives it a direction slightly to one side, first to the 
right, next to the left, then again to the right, thus alternately 
changing with each hole she successively perforates. Hereby the 
eggs have more space between them than they would have were 
they deposited in a single row. I conjecture it is to enable the 
eggs to swell and increase in size without crowding against each 
other, that they are thus arranged. Although it is quite an anomaly 
for an egg to grow and enlarge, the fact is well ascertained that 
the eggs of some of the saw-flies which are deposited in the soft 
and spongy pith of plants do swell and become larger befoie they 
hatch than they are when first laid. And the eggs of this tree- 
hopper have such a plump appearance, and fill the holes so com¬ 
pactly that it would seem they must have been smaller to admit 
of their being crowded into a space so contracted. 
These same scars occur also in grape vines. But it is in the 
stalks of the raspberry that they arc most common and occasion 
the most damage. They are met with in the stalks of the wild 
black raspberry or thimble berry as it is sometimes called (Rubus 
occidenlalis), and of the red raspberry also (R. strigosus ); and 
they are liable to be quite numerous in the cultivated garden rasp¬ 
berry (R. Idaius). In the Rural Neiu Yorker , May 11, 1867 (vol. 
xviii, p. 151), Dr. F. H. Guiwits of Clinton, Michigan, states that 
“Almost every cane of my raspberries, both black and red, has 
been pierced by some insect depredator, with small perforations 
the size of a pm, in each of which, in the pith of the cane, 1^ find 
an egg about an eighth of an inch long, of a whitish color. These 
perforations occur in rows and very close together. The rows are 
