52 THE ENTOMOLOGIST. 



parthenogenesis occurs the same as with some species of 

 gallflies. 



The imago is only from four to five millemetres long, and 

 expands to one centimetre. The whole body is shining 

 black. The head is broad and but slightly projecting, and, 

 together with the thorax, is covered with very fine, silky 

 pubescence. The eyes are widely separated ; they are of an 

 elliptical shape and moderately projecting, and are of a 

 bronzy tint. The antenna) are black ; they are as long as the 

 abdomen, and are entirely similar in form to those of other 

 species of Nematus, — for example, Vallator. The external 

 angles of the prothorax towards the insertion of the wings, 

 and the tegulse, are of a reddish white. The anterior legs, 

 from just above the knee, are of the same tint, which becomes 

 somewhat darker towards the tarsi ; the intermediate and 

 posterior legs are also reddish at the knee, but the femora 

 and tarsi are of a faded gray ; all the apophyses and the tips 

 of the coxae are likewise of the same reddish tint. There is 

 nothing remarkable about the transparent, more or less 

 iridescent, wings; the nervures are of a faded earthy black, 

 with the exception of the larger nervures at the insertion of 

 the wing, where they are of a sordid white. 



List of the Best Insects taken at Whittlesford during the 

 jmst Season. By A. Thurnall, Esq. 



Chcerocampa porcellus. — Several flying on sweet-william 

 flowers, and the larvae on Galium. This species seems to be 

 much more common here than C. Elpenor. 



Sesia ichneumoniformis. — Three flying in sunshine; one 

 depositing its eggs at the roots of birds'-foot trefoil. 



Liparis chrysorrhcea. — I found a " nest" of the larvae on 

 whitethorn, from which I bred a large number of insects. I 

 have never taken it here before. 



Ennomos fuscantaria. — Two pupae and two larvae; all 

 spun up on the leaves of ash. They hatched in due time, 

 two males and two females. 



Geonietra papilionaria. — Three specimens flying in woods. 



Corycia taminata. — Four specimens flying in woods. 



Scotosia certata. — One flying over barberry flowers. 



