STATE AGRICULTURAL SOCIETY. 
841 
APHIS. ITS ALI.OTRIA PARASITES DESCRIBED. 
on the suture between tbc seoontl and third segments. Legs honey-yellow; feet black except 
at their bases, sometimes wholly black with the shanks dusky. Wings transparent, slightly 
smoky; veins of the anterior pair coarse, black or dark brown, becoming abruptly more 
slender, colorless and almost imperceptible on the hind part of the wing; stigma long-tri¬ 
angular, salt-white; a single largo irregular cell occupying the middle portion of the wing 
and bordering the stigma on its inner side, a short coarse transverso vcinlct bounding this 
cell at its bind end, tho two longitudinal veins between which this veinlet is placed becoming 
slender and abortive a short distance back of it, the outer vein remaining coarse twice the 
length that the inner one does after passing the veinlet. 
Variety a, obscura. Legs blackish, honey-yellow only nt base and on the knees; sub- 
basal band of the abdomen less distinct. 
This was the most common of these parasites in July and was 
met with again on young grain late in autumn. The larger size 
of this parasite causes the body of the aphis containing it to be 
perceptibly more swollen than it is with the other species, being 
distended almost to a globular form. It was in one instance bred 
from an aphis which was adhering to one of the anthers hanging 
out of the chaffs, the under side of her abdomen being tied, as 
usual in such cases, to the surface on which she was standing. 
Her body was faded to drab gray, the antennm, honey tubes, feet 
and ends of the thighs retaining their natural black color. 
1 have also met with two other species in the grain fields, 
which could only have been there for the purpose of depositing 
their eggs in these insects, it being the well ascertained habit of 
the genus to which they pertain to rear their young in the dif¬ 
ferent species of plant-lice. 
Wheat Allotria, Allotria Tritici , new species. (Hyracnoptcra, Cynipbidre.) 
Black; bead and legs pale yellow; antennas 13-jointed, basal joints more slender and pale 
yellow. Length 0.05. 
Head transvcisc, twice us brond as long, oonvex in front, concave behind; faco and mouth 
pale yellow, crown piceous-yellow; eyes protuberant, rathor small, black; eyelets three, at 
the corners of a triangle, on tho crown. Antcnnco inserted on tho middlo of the front, 
clothed with a very short inclined beard, more slender towards their bases, nearly as 
long ns the body, black, the four first joints palo yellow; basal joint thrice as long as 
thick, obovate, transversely cut off at its end; second joint rather moro slender, twice as 
long ns thick, oval; third and fourth joints each as long as both the preceding and but hnlf 
their thickness, oylindric; fifth joint more thick, and the following ones gently increasing 
till they come to equal the basal in thickness, tho last ones thrice as long as thick, oylin¬ 
dric, the terminal one oval. Thorax broad oval, broader than the head, black, shining. 
Abdomen smaller than tho thornx, nearly globular, moderately compressed, its end blunt or 
vertically sub-truncated with a thick teat-like projection from its middle. Legs honey- 
yellow; foot, five-jointed, filiform; anterior pair with tho basal joint more than twice the 
length of the following ono, second to fourth joints successively shorter, last joint more than 
twice tho length of the fourth, ending in an egg-shaped toe of the same thickness and appear¬ 
ing like a sixth joint; hind feet with the basal joint ns long ns tho threo following ones, 
which aro successively shorter, the lust joint twieo tho length of tho fourth, and furnished 
nith a pair of hooks at its tip. Ikings hyaline, slightly smoky, with a row of short inclined 
bristles along their outer edge but no fringe on tho inner margin or tips; fore wings with 
