isso]. 267 



(Nassauischen Cynipiden, p. 57), ou information received from Giraud. 

 Folii, Sell., will then requii-e another name. So far as I know, Schenck 

 was the first to describe it. 



I have the following parasitic Cynipidce from the West of Scotland: 



Allotria citripes, Thorns., 6f\'., 1861, 410, 18. A. trapezoidea, 

 Htg., is, I believe, a distinct species from A. citripes. 



Allotria fuscipes, Thoms., I. c, 410, 19, bred from an A2^his on 

 Sallx aurita. 



Allotria hrevis, Thoms., /. c, 408, 9. 



Eucoela erytlirocera, Thorns., Opusc. Ent., 819, 1. 



Heptameris pygmcea, Dbm., Thoms., Ofv., 1861, 398, 4; Scar- 

 borough, Dr. Sharp. 



Eucoela picicrus, Gir. (Vei4i. z.-b. Ges. Wien, 1860, p. 143), is a 

 distinct species from E. hexatoma, Htg. It belongs to Foerster's 

 genus Hexacola, and the latter to his Hexaplasta. H. picicrus I have 

 from Sutherlandshire. See Trans. Ent. Soc, Lond., 1879, p. 117. 



{To be continued). 



FORMICA EUFA STRENaTHENINa ITS NEST BY TAKTNQ 

 WORKERS FROM OTHER NESTS. 



BT C. O. EIGNELL. 



In August, 1877, I discovered a very large nest of Formica rufa, 

 and observed a number of large workers bringing home to their nest 

 other ants as prisoners ; at that time I did not take much notice of it, 

 but during the winter the remembrance of it would occasionally crop 

 up in my mind; at last I resolved to visit the formicarium the following 

 year, which I did several times, and on my visit to it on the 23rd 

 August, I found the war operations in full activity, the ants issuing 

 from a magnificent formicarium, measuring at the extreme base about 

 forty feet in circumference, and in the centre about three feet in 

 height ; the small nest on which the raid was then made was about 

 200 feet from the large nest, the stream of workers was continuous, 

 the distance from each other on their homeward journey was about 

 eight or ten inches, each one bearing another worker between the 

 mandibles. The worker from the large nest, which I shall call No. 1, 

 would come up to the worker of the small nest, No. 2 (who evidently 

 was just returning home from a foraging expedition, and not knowing 

 what was going on at home), would exchange a few words, or some- 

 thing very closely allied, as if to say: — " Tou must come with 



