158 



THE SCOTTISH NATURALIST 



Genus Ampkorophora, Buckton. 

 Amphorophora ampullafa, Buckt. Larvrc occurred ontheunder- 

 surface of fern leaves at Stirkoke, Wick, on the 8th September. 



Genus Drepanosiphiim^ Koch. 

 Drcpanosipkian platanoides, Schrank. I found apterous vivi- 

 parous females, larv.is, and nymphre common on the under-surface 

 of leaves of sycamore {Acer) near Wick on the yth September. 

 They were preyed upon by Cecidomyid ]arv?e. 



Genus Rhopalosiphum, Koch. 

 Rhopalosiphum britfeni, Theobald. This species was common at 

 Stirkoke, Wick, on gooseberry and currant on the gth September. 

 I took alate and apterous viviparous females and several apterous 

 oviparous females. As the latter form has not been described the 

 following is a description of it, but colour notes from the fresh 

 specimens were not taken. 



A 



B 



C 



Fig. I. 



Oviparous Female of Rhopalosiphum britteni, Theobald. 



A = Head and antenna magnified 31 times. 



B = Third segment of antenna magnified 128 times. 



C = Tibia of third pair of legs magnified 60 times. 



D = Cauda magnified 60 times. 



E = Cornicle mm 



Oviparous female. Apterous ; antenna more than three-quarters 

 the length of the body, posterior portion dusky, the third segment 

 with ten to twenty sensoria situated more or less in a straight line 

 on the inner side, the antennae often being so placed in mounted 

 specimens that the sensoria occur exactly on the edge and therefore 

 are less conspicuous. The fourth segment is slightly longer than 



