840 
ANNUAL REPORT OF NEW YORK 
Arms, its Aruinius parasites described. 
From the dead ichueumonized lice I have bred two different 
parasites, and have met with the same species also upon the 
grain. They pertain to the Aphidius group of the family Bra- 
conidw and the order Hymenoptera, of which some account was 
given and a few species were described in my First Report. 
One of these parasites has the veins of its wings identical with 
those of the Ephedras Jlvence , one of the three parasites which 
Mr. Curtis describes and figures as belonging to this grain aphis 
in England. But as its antennce are longer and their joints more 
numerous, it will pertain to a different genus, named Toxares 
by Mr. Westwood, whilst the other species falls within Mr. Hali- 
day’s genus Praon. I now proceed to name and describe these 
insects. 
Wheat-louse Aphidius, Toxares Trilicaphis, new species. (Hymenoptera. Braconidie.) 
Black, shining,antenna; thrend-like, longer than the body,twonty-five jointed. Length 0.08. 
Head transverse, convex iu front, concave at base; face clothed with fine short hairs; eyos 
lateral, rather small; eyelets (ocelli) three, placed in a triangle upon the crown; feelers dull 
white, bearded, five-jointed, the joints nearly cylindric, separated by intervening pedicols, 
the last one elliptic and shortest. Antennso 0.10 long, filiform, bearded with short inclined 
bristles, composed of twenty-fivo cylindrical joints; basal joint thickest, top-shaped, a third 
longer than thick, receiving into its apex the second joint, with which it is compactly joined, 
and which is thicker than the following ones, a third longer than thick, and slightly narrow¬ 
ing towards its apex; third joint longest and rather more slender than the following joints, 
faintly thickened or swollen near its base and also nt its apex, and showing when greatly 
magnified a minute transverse joint interposed between it and the second ; fourth joint a third 
shorter, more than four times as long as thick; remaining joints successively diminishing in 
length, the last one more than twice as long os thick and of an oval form. Thorax egg- 
shaped and rather broader than the head. Abdomen flattened, a little longer than the thorax 
but soarcely ns broad, long oval, more narrowed anteriorly and bluntly rounded nt tip, highly 
polished, its hind part olothed with short hairs which arc more dense at the tip. Legs 
black, brownish at base and on tho knees. Wings transparent, slightly smoky, strongly 
iridescent red and purple, fringed on their hind edge, more conspicuously so on tho hind 
pair; stigma dull pale brown; veins brownish black. 
Oat-louse Aphidius, Praon Aucnaphis, new species. (Hymenoptera. Braconidie.) 
Black, legs honey-yellow and also the base of the abdomen nnd a sub-basal band; antenna) 
as long ns the body, thread-like, twenty-jointed. Length 0.10. 
Head black and shining, square when viewed from above and twioe as broad as long; eyes 
oval, slightly projecting, occupying the fore part of each side; eyelets on tho crown, appear¬ 
ing as three elevated shining dots forming tho corners of a triangle; mouth and feelers very 
palo yellow, the latter appearing as very slender threads jutting from the month nnd as long 
as the head. Antenna) about as long as tho body, filiform, rather thick and robust, black, 
the basal joint often pale on its under side, joints nineteen or twenty, clothed with a short 
inclined beard; two first joints shortest and compactly joined together, tho basal one obovato 
and thickest; remaining joints cylindric, about thrico as long us thick, narrowed at their 
bases and cut off transversely nt their tips, separated by short pedicels; last joint ionger 
usually than its predecessor, egg-shaped. Thorax broader thun tho head, more deep thnn 
wide, egg-shaped, black and shining. Abdomen as long as the thorax but narrower, oval, 
viewed laterally broadest at the tip, highly polished, brownish blaok; first segment narrower 
and forming a oylindrioal podicel, bright honey-yellow; a dull yellow or olivo band or spot 
