Insects. 2221 



the rostrum is dull yellow, with a black tip : the tubes are black and about one-tenth 

 of the length of the body : the legs are dull yellow ; the knees, the tarsi and the tips 

 of the tibiae are black. 



The winged viviparous female. The body is black : the abdomen is very dark 

 green, and sometimes black above : the antennae are as long as the body : the rostrum 

 is dull yellow, with a black tip : the tubes are black : the legs are dull yellow ; the 

 tarsi, and the tips of the thighs and of the tibiae, are black : the wings are colourless ; 

 the costal veins are yellow; the stigmata and the other veins are brown. 



Aphis suffragans. 



The winged viviparous female. The body is dull green and larger than that of the 

 preceding species : the disk of the thorax and that of the abdomen are sometimes al- 

 most black above : the antennae are black and a little longer than the body : the mouth 

 is yellow ; its tip and the eyes are black : the tubes are dull yellow, with black tips, 

 and nearly one-fourth of the length of the body : the legs are yellow; the tips of the 

 thighs are brown ; the tarsi and the tips of the tibiae are black : the wings are colour- 

 less ; the squamulae and the costal veins are yellow ; the stigmata and the other veins 

 are brown. 



Found, with the nine preceding species, near Fleetwood, in the autumn. 



F. Walker. 

 August, 1848. 



(To be continued). 



Of the manner in which the Female of Psocus quadripunctatus constructs a Web to 

 protect her Eggs. — Mr. Westwood, in bis ' Introduction to Entomology ' (ii. 20), re- 

 lates, that M. V. Audouin had observed that a female winged Psocus was in the habit 

 of weaving a web over its eggs, " which it had deposited in the impressed parts of 

 leaves formed by the veins of the leaf: likewise, that in another species, the eggs, 

 eight in number, were arranged on a leaf in an irregular circle, with the tips all 

 pointing to the centre of the circle." Dr. Erichson, in his ' Annual Keport ' for 1843, 

 remarks that Huber, in the ' Memoirs of the Physical and Natural-History Society of 

 Geneva ' (x. i. 35), has made observations on the Psoci. He observed that they lay 

 their eggs upon leaves, and surround them with a web, and that the various species 

 form webs of different kinds. But the chief merit of his observations consists in the 

 discovery of the spinning organ, " which is placed, in the form of a couple of oblong 

 corpuscles, on the border of the labrum;" (Ray Soc. Report, 1847, 165). On the 4th 

 of July, while examining the leaves of the oaks in this vicinity, which are chiefly 

 Quercus sessiliflora, I came upon a spotted-winged Psocus (which I afterwards deter- 

 mined to be P. quadripunctatus of Fabricius), attending a collection of eggs, covered 

 over with a web, and placed on the underside of the leaf. Though disturbed at my 

 intrusion, after a short flight she returned and took her post at their side. I cannot 

 decide whether the object of her " solitary watch " was the protection of her eggs, 

 or whether she might not yet have completed her operations for their security : from 

 subsequent observations I am inclined to the latter supposition, as I afterwards found 

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