NOTES ON NEW AND LITTLE KNOWN BRITISH APHIDES. 79 



dusky green, with six pairs of hairs, spinose and about one- fourth 

 the length of the cornicles, acuminate. Legs long, green, apices of 

 femora dark, most of the tibiae darkened, especially at the apices ; 

 tarsi dark ; femora and tibiae hairy, especially the latter, towards 

 their apices. 



Length, 2-8 to 3 mm. 



Alate viviparous female. — Green, with dark thorax; antennae, 

 cornicles and most of the legs dark ; some dark markings on the 

 abdomen. Antennae longer than the body ; basal segment con- 

 siderably longer than the second, the third longer than the fourth, 

 with 22-25 sensoria spread over about three-fourths of its length ; 

 fourth segment a little longer than the fifth ; the sixth about as long 

 as four and five ; hairs simple. Proboscis dark at the apex, hairy, 

 reaching to about the third pair of legs. Cornicles black, very long 

 and cylindrical, apex reticulate, remainder imbricated. Cauda green, 

 about one-sixth the length of the cornicles, with apparently four 

 pairs of lateral hairs, spinose. Legs long and rather thin, base of 

 femora green, apex black; tibiae dark, especially at the apex; tarsi 

 dark ; femora and tibiee hairy, especially the apex of the tibiae. 

 Wings much longer than body, normal venation. 



Length, 3 mm. 



Food Plants. — The bramble {Rubus fruticosiis) ; and also on 

 raspberry (R. idoeus). 



Localitt/. — Wye, July 14tb and 22nd, 1915, and August 17th, 

 1916. 



I found this species, in company with Amphorophora ruhi, 

 Kaltenbach, on the leaves of brambles, and at first mistook it 

 for M. rabiellum. It differs, however, in the sensoria on the 

 antennae in both forms, and in the very long cornicles and 

 relatively short cauda. Later I found it on raspberries in the 

 same year, and again on brambles in 1916. 



25. Macrosiphum eiiphorbiellum, nov. sp. 



Apterous viviparous female. — Pink, semi-transparent ; antennae 

 pale, longer than the body ; the basal segment larger than second ; 

 third longer than fourth, with two oval sensoria near the base ; 

 fourth about as long as the fifth ; flagellum very pale ; a few scanty 

 hairs on the first three segments. Eyes black. Proboscis pale, 

 rather thick, reaching to about the base of the third pair of legs. 

 Cornicles pale pink, faintly dusky at apex, about one-third the length 

 of the body, cylindrical, projecting beyond the cauda ; apex faintly 

 reticulate, very indistinctly imbricated on the remainder. Cauda 

 pale pinkish-white, delicate in texture, very faintly spinose, rather 

 thick and bluntly pointed, about half the length of the cornicles, 

 with four pairs of pale lateral hairs and three dorsal ones near the 

 apex. Legs pale pinkish, rather thick and long ; tibiae with numerous 

 short pale hairs, a few on the femora. 



Length, 1'8 to 2 mm. 



Food Plant. — Spurge {Euphorbia esida). 



Locality. — King's Wood, near Wye, April 25th, 1916. 



