THE ENTOMOLOGIST. 243 



lay eggs, but pass away in early winter, except a remnant, 

 which must serve for the continuance of the race. As the 

 moving power of the creature is very little it cannot go far 

 from the leaf, to whose recesses it must resort in the spring ; 

 and the means whereby it shelters itself from severe frost has 

 not been observed. Other families of Aphides pass the 

 winter in the egg-state; and Chaitophorus Aceris is remark- 

 able on account of its aestivation, or passing summer months 

 in a suspension of growth, as is the ease with some cater- 

 pillars : this occurs in a very early stage of its existence. 

 P. Quercus is represented beyond the Atlantic by another 

 Phylloxera (P. Rileyi of Lichtenstein), which frequents oaks 

 in North America. — Francis Walker. 



Additional Parasites of Cynips lignicola. — 1 have lately 

 bred seven different species of parasites, not including the 

 well-known Callimome (Devoniensis, Parf.) and Decaloma, 

 from some dwarfed galls of C. lignicola, which I collected at 

 Burnham, Essex, last February. Mr. Walker has kindly 

 examined the insects, and finds some new to Britain, if not 

 altogether new species. The insects are (1), ten specimens 

 of Ormyrus punctiger, emerged from 18lh June to 29th 

 July; (2) one male Eurytoma, n.s.? emerged 18th April; 

 (3) one Pteromalus, ^7?. ? emerged 13th May; (4) numerous 

 specimens of a Callimome, nearly allied to C. inconstans, 

 emerged between 28th April and 20th June; (5) several 

 females and one male of Callimome, n.s., emerged between 

 3rd and 17th April; (6) nine specimens of a small black 

 Hymenopteron, quite unknown to Mr. Walker, seven females 

 and two males, emerged from middle to end of March ; 

 (7) one specimen, emerged 25th June, returned by Mr. 

 Walker as n.g. ? allied to Entedon. All these were bred from 

 a small cluster of galls on a single twig. — Edward A. Fitch ; 

 Dozen Hall, Rayleigh, Essex, October 8, 1872, 



Extracts from the Proceedings of the Entomological Society, 

 February 5 to March 18, 1S72. 



Plant-lice and their Enemies. — Mr. M'Lachlan brought 

 before the notice of the meeting an illustration of the manner 

 in which the ravages of Aphides are checked by parasitic 



