52 the scottish naturalist 



Family Aphidid/E. 

 sub-family aphidinji. 



Tribe Callipterini. 



Sub-tribe SaltiisapJiidina. 



Genus Thripsaphzs, Gillette. 



Thripsaphis cyperi, Walker. — Several apterous oviparous 

 females, larval oviparous females, and one apterous viviparous 

 female were taken on 22nd September on the blades of 

 Carex goodenovii, J. Gray, growing amongst rushes in marshy 

 ground near the Kyle of Sutherland, Invershin. Small 

 lineal oval eggs covered with whitish grey tomentum were 

 also found upon the leaves. I revisited the same locality 

 on I2th July 1921, but despite prolonged search only a 

 single individual was obtained and that an apterous vivi- 

 parous female. This species has been described by Mr 

 Theobald (5) from the specimens collected in this district. 



Sub-tribe Pterocommina. 

 Genus Pteroconiina, Buckton. 



Pterocomma j'acksoni, Theobald. — Apterous viviparous 

 females and larvae were found thickly clustered along the 

 branches of bushes of Salix caprea growing in a birch- wood 

 along the river Shin, near Inveran, Invershin. They were 

 closely attended by ants, Formica riifa L., and appeared to 

 be very local, not being observed upon sallows growing 

 elsewhere. 



Pterocomuia populeus, Kalt {piiosa, Buckton). — Apterous 

 viviparous females and larvae occurred upon a branch of 

 another bush of Sa/ix caprea growing close to those on 

 which Pterocoiiinia jacksoni occurred. Their habits and 

 distribution were exactly similar to that species, and they 

 were also attended by Formica rufa. The coloration of 

 both species harmonised exactly with that of the branches. 



Sub-tribe CJiaitopJioriiia. 

 Genus Sipha, Passerini. 



Sipha schoiitedenz, Del Guercio. — Taken abundantly upon 

 the blades of grass {Holcus) growing amongst rushes in 



