NOTES ON THE APHIDES OF ROSS-SHIRE 



89 



its apex ; the third segment is much longer than the second, and 

 beyond the middle it has a pale division which almost divides 

 the joint into two it bears two short hairs at the apex. The fourth 

 segment is about the same length as the second, and has a large 

 sensorium at its apex surrounded by fine hairs ; above it are two 



Fig. II. 

 Pemphigus gleb<z, nov. sp. Parts of Virgogenia. 



A. Waxgland plate. 



B. Dorsal view of abdomen (aphis made transparent), showing 



position of waxgland plates. 



C. Apical portion of proboscis. 



D. Base of tibia and tarsus. 



E. Head and antenna. 



F. Apical portion of antenna. 



G. Rhinarium. 

 H. Eye. 



short hairs. The distal portion of this joint is faintly imbricated. 

 The sixth segment is about the same length as the third, imbricated 

 faintly, with a hair preceding the rhinarium, and several hairs 

 at the apex of the segment. The rhinarium is conspicuous and is 

 provided with fine hairs. The eyes consist each of three black 

 pigment spots. The proboscis reaches just beyond the coxae 

 of the third pair of legs. The first joint is very Ion 

 76 M 



, reaching 



