506 
Observations on the various Insects 
row, rugose ami black, the base ferruginous; abdomen brown, 
smooth, shilling, and shuttle-shaped, the margin of the segment 
next the pedicle, and a suffused patch on the back, ochrcous : wings 
transparent, iridescent, and pubescent ; superior with a large 
cubital-niternal cell, imperfectly closed externally, and producing 
two rudimentary nervures only ; all the posterior marginal and the 
radial cells wanting; stigma large, yellowish-brown, forming a 
thickened costa towards the apex : legs subferruginous ; all the 
coxaj and thighs, excepting tlie first pair, pitchy ; their tibi33 
clouded with the same colour ; tarsi 5-jointed and blackish, basal 
joint considerably the longest in the hinder pair j claws minute ; 
pulvilli longer: fig. 12 ^ ; showing the natural size. 
This was produced from a large testaceous female Aphis found 
upon an ear of wheat the middle of July (fig. 13; u the natural 
size). It made its exit near the tail, as shown in the figure. We 
learn from Mr. Haliday, that whilst the male Aphidii are hovering 
over the plants infested by the Aphides, the female is engaged in 
laying her eggs, which she effects by bending her body imder her 
breast ; and, by lengthening her tail, the ovipositor is conducted 
under the Aphis, and an egg is instantly inserted in its belly near 
the tail ; she then searches for another suitable victim, passing by 
all those which have been already inoculated. 
Prom the dead female Aphides of a black colour (fig. 20 h) I 
bred an allied insect, named by Mr. Haliday * and Nces ab Essen- 
beck. f 
8. Ephedrus plagiator. Female clothed with a few pale scat- 
tered hairs : antennai black, liliform, considerably shorter than 
the body, 11-jointcd, two basal joints small, 3rd the longest, fol- 
lowincr elongated : head and thorax black and shininfj, the former 
transverse-oval ; eyes small, somewhat lateral ; ocelli 3 in triangle 
on the crown : thorax gibbose-ovate ; collar short and narrow ; 
scutellum semiovate; pedicle long, narrow, and rugose ; abdomen 
small, shuttle- shaped, smooth shining brown, the base and disc 
ochreous-brown, apex furnished with two slender horny pointed 
lobes : 4 wings transparent, iridescent, with a slightly smoky tinge, 
nervures brown, superior with a long, yellowish-brown stigma, "the 
costal nerviire extending to the extremity of the radial cell, which 
is large and perfect ; there are also 3 complete discoidal cells, and 
the external cubital cell is nearly perfect : legs ochreous, four 
hinder thighs and the tarsi pitchy, tips only of the first pair fuscous 
(pi. O, fig. 21 ; c the natural size). 
This little insect is exceedingly like the preceding one ; but 
there are fewer joints in the antcnn;f, and, on comparing the wings, 
it will be seen that the nervures arc different, and the cells more 
* Ent. Mag., vol. i. p. 4SG. 
t Hymenop. Ichneu. affiu. Monog., vol. i. p. IG. 
