14 
The Cabbage Aphis Allotria — AJlotria brassicce n. sp. — Female. — Length .05 inch . 
Black, highly polished, face and vertex of head testaceous] cheeks hroad, convex, 
antennae 13-jointed, long, pale yellowish-brown or yellowish towards base, becoming 
brownish or infuscated at tip ; thorax smooth, parapsides distant ; scutellum small, 
round, convex, with a deep transverse groove at base; wings clear, pubescent and 
fringed with short cilia ; veins yellowish, the radial area closed ; abdomen globose, 
with the second segment but slightly longer than the third, highly polished black, 
but more or less testaceous at base and at vent, and a clump of whitish hairs at base ; 
legs honey-yellow ; in dry specimens tawny-yellow. 
Male. — The male is of the same size or slightly smaller than the female, and is easily 
recognized by the 14-jointed antenuse; the third, fourth, and fifth joints almost equal 
jn length, and all are excised outwardly; the testaceous spot on vertex of head is not 
so apparent ; the pleura are more or less testaceous and the abdomen is ovate. 
Described from several specimens bred from June 6th to July 15th. 
The Cabbage Aphis Pachyneuron — Pacliyneuron aphidivora n. sp. — Female.— 
Length .04 to .05 inch. Head metallic green suffused with purple and purplish 
black on vertex ; sliagreened, the sculpture coarser beneath eyes ; mandibles large; 
tridentate ; eyes purplish-brown ; antennae brown, pubescent, scape and pedicel 
darker ; thorax purplish-black with bronzy and cupreous reflection, finely reticulately 
sculptured; scapulae, golden green; scutellum prominent, convex, rounded; meta- 
thorax finely wrinkled ; abdomen flat, oval, blue-black, metallic at base and with 
bronze tingings towards apex, darker beneath ; wings hyaline, iridescent, pubescent 
excepting at base ; veins pale yellow, the thickened marginal vein brownish, the 
stigmal slightly longer than marginal ; along outer edge are seven long hairs ; legs 
pale yellowish, coxae black, anterior and middle femora d usky near base and along 
upper and lower surface, at least two-thirds their length. 
Described from several specimens bred June 6th. 
TnE Cabbage Aphis Excyrtid— Encyrtus aphidiphagus n. sp.— Female.— Length 
.06 inch. Blue-black. Head shagreeued, face and mouth parts blue, the facial impres- 
sion is very deep, eyes brown ; ocelli region greenish ; antennae brown ; thorax shag- 
reened in wavy curved rugosities, hind margin metallic green ; abdomen bronzed, blue- 
black; wings hyaline, marginal vein short ; legs honey- yellow, all femora brown ex- 
cept at tips, a large brown blotch near base of tibhe, terminal tarsal joints dusky. 
Near Encyrtus sublcstus Howard but the color of the legs will at once distinguish it. 
Described from several sjiecimens. 
The Cabbage Aphis Syrphus Fly — AUograpta obliqua Say. — The 
larva or maggot of this fly has been taken feeding on the u Cabbage 
Aphis,” and below I give description of its various preparatory stages: 
The Egg. — Pearly white, long oval ; .03 inch in length, deposited on the leaves 
among the Aphids. 
The Maggot. — It is difficult to distinguish this from many other Syrphid larvae. 
The full grown larva measures .25 inch in length, cylindrical, tapering anteriorly to 
point ; it is perfectly smooth, a translucent green, and the viscera are plainly discerni- 
ble, variously shaded, dark green, yellowish or brownish ; the jaws are black ; the air 
vessels, which are visible on either side through the body walls, become contiguous on 
last segment, where they are connected externally with two small warty spiracles. 
The Puparium. — The puparium into which the maggot transforms resembles a cone, 
with the side attached to the leaf, flattened and held in place by a viscid substance 
secreted by the larva ; its anterior end broad and well rounded, gradually nar- 
rowing posteriorly ; at the end are still to be seen the two warty tubercles. Color 
yellow-brown, with occasionally darker shadings. 
