2000 The Zoologist— February, 1870. 



of tbis species are noliced in the 'Zoological Record' for 1867, page 482, and I 

 believe Uiat Aphis iJerforatus, Signorel, referred to in the same work (p. 483) is one of 

 the niudiGcations of C. Aceris. 



Chaitophorus Populi (S. S. 1301). — I' have proposed the generic name Arctaphis 

 for tbis species, which dilTers iiuich from C. Aceris in slruciure. 



Pterocullis Alni (S. S. 1301). — It is of frequent occnrrence in the Isle of Man. 

 P. Tilia; is the type of Kuch's genus Callipterus, which, wiili Mjzocallis, Plemcallis, 

 Therioaphis and Agrioaphis, lorms a group in the ApLiilina. Aphis Myricee, Kallen- 

 bach, is the type of my genus Agrioaphis. In adiiilion to C. Tiliae the lime is infested 

 by the following insects. The galls on the twigs of the lime (formed by Cecidomyia 

 TiliiE) and the mites that infest the leaves are very variable in their appearance. The 

 mites are Tetranycbus socius {Koch, Avariden, &c., 17, 16; Trombidium socium, 

 Hermann, Mim. .,4;;/. 43, 26, pi. 2, f. 13), and T. tiliaruin (Koch, Acaritlen, \7, 13; 

 Trombidium tiliarum, Hermann, Mem. Apt. 42, 25, pi. 2, f. 12).. The former is 

 wholly yellow ; the latter is very pale yellow, pale green along each side and with some 

 black marks. They are nearly allied to the mite that infests ihe leaves of the 

 currant.* 



Trama and Paraclelus (S. S. 1301). — These two genera are composed of subter- 

 ranean species, and may be placed more naturally with the Rhizobinas. 



Sipha Glyceria' (S S. 1328). — This is the type of the genus Sipha and has been 

 hitherto included in Aiheroides, //a^iJuy. A.serrulatus is the type of the latter, and 

 both genera should be transferred from the Lauhnina; to the Aphidinaj. 



Luchnus Quercus (S. S. 1329). — This is the type of my genus Stomaphis. Unlike 

 most species of Aphidids it is very limited in numbers and in the spots where it occurs. 

 It has been observed, though rarely, in Surrey, Kent, Essex and Middlesex, and I 

 liave found it on "Turpin's Onk," near Finchley. It does not seem to be attacked 

 by parasites, and it lives securely in the deep recesses of the oak bark, where its long 

 ristrum, which it can extend or retract, enables it to feed on the sap. It is thus 

 always provided with food except in the winter, and, unlike the migratory Aphididae, 

 does not need a new abode, and accordingly very seldom assumes the winged slate. 

 The latter form appears in spring, and, like the male, has no long rostrum, and the 

 migration at this early period allows time for the settlement in a new habitaiion before 

 the development of the oviparous generation when the wingless male also appears. 



Lachnus Picea, Panz. — It is less regular in its appearance than the other English 

 Lachni that feed on the fir tribe, and occurs only now and then near London. It is 

 especially an arctic species and has been taken very far north in the polar regions. 

 I have found it on tiie Grimsel, and I observed many specimens of it on the Mer de 

 Glace. It is the Dryobius riparius of Snellen van Vollenhoven. 



Callipterus Jug landis (S. S. 132S)). — The genus Callipterus may be restricted to 

 C. Tiliae before mentioned, and the two species included in it by Passerini belong to 

 two widely different genera; the first is one of the Lachninae, the second one of the 

 Aphidina». C. Juglandis, for which I propose the generic name Callaphis, lives on 

 the upper surface of the leaf in masses along the midrib. Like the genus Cladobius 

 it seems to connect the Lachninae with the Aphidinae. C. Jnglandicola, which I have 



* Trombidium telarium, Hermann, M. A. 40, 24, pi. 2, f. 15. Telran3chus 

 lelarius, Koch, Acariden, 17, 12. 



