APHIDID^ FOUND IN KENT. 21 



variety of Linnaeus's populi, which I have been unable to find in 

 Kent. 



C. salicivorus, Walker. — Wye, on the under side of willow leaves. 

 Very pale and sluggish, all wingless females, July 10th, 1911. 



G. caprece, Koch. — Wye, on willows, July 10th, 1911, under the 

 leaves. Winged and wingless females. 



Genus Callipterus, Koch. 



CallipUrus quercns, Kaltenbach. — Wye ; abundant on oak leaves 

 in June, and on to September 22nd. Winged females and young 

 under and on the leaves, and producing much honey-dew, especially 

 abundant high up on the trees. The species and the querceus of 

 Kaltenbach are placed in Mordwilko's genus Tuherculatus. 



C. castancBCB, Buckton. — Godmersham ; beneath leaves of the 

 sweet chestnut, June 9th and 29th, 1911. Winged and wingless 

 females. Placed in the genus Myzocallis, Passerini, by Schouteden. 



C. alni, Fabricius. — Wye ; common on alders by the old river. 

 Winged females and larvae, &c., under the leaves and causing little or 

 no harm, very numerous from June to August. None seen in Sep- 

 tember. Many winged females also occured on willows, osiers, hazel, 

 and on water grasses growing under and around the alders. Schouteden 

 now places this in Pterocallis of Passerini. 



G. carpini, Koch. — Wye, July 14th, 1911, a few apterous females 

 on birch leaves, very uncommon in the neighbourhood. Schouteden 

 makes this the same as Goetze's coryli. From a casual examination 

 so far it seems distinct. 



G. querceus, Kaltenbach. — Under oak leaves, Wye, July to Sep- 

 tember. The adult winged females skip readily, whilst the apterous 

 females crawl backwards and stick tenaciously to the leaves. Not 

 abundant. Also from Pitlochry, N.B., September 7th, 1911. 



G. betulicolce, Kaltenbach.* — A single wingless female and a nymph 

 on under side of birch leaf, Wye Downs, July 30th, 1911, the latter 

 hatched on August 7th. This species was also sent me from 

 Pitlochry, N.B., in September by Mr. A. Duffield. Most on birch, but 

 a few winged females on oak. 



G. hetularlus, Kaltenbach. — A few apterous females and many 

 larvie under birch leaves. Wye, August 13th, 1911, on the downs. 



These last two should also come in Myzocallis. 



Genus Deepanidosiphum, Koch. 



Drepanidosiplmm platanoides, Schrank. — Wye Downs, July 30th, 

 1911. Many winged viviparous females on maples and sycamores, 

 beneath the leaves, a few only on each leaf, all of the green variety. 



Genus Aphioides, Passerini (Cladobius), Koch.f 

 Aphioides {Gladobius) populeus, Kaltenbach. — -A single colony of 



* Kirkaldy (1905) places this in his genus Eallistaphis ; it certainly 

 differs from typical Callipterus, in which genus Buckton places it. 



f Kirkaldy (1905) proposed the new name Aristaphis for this genus, 

 Schouteden places it in Buckton's genus Pterocovima. 



