138 BRITISH ANTS. 



end of July to the end of September ; he first captured a winged 

 female on July 28th, and at the beginning of October he found males 

 and winged females in some numbers in the herbage 4 . Forel 

 witnessed a marriage flight on the summit of Mont Tendre on 

 July 30th, 187 1 18 , Nylander captured a winged female at Helsingfors 

 in August, 1846 2 , and I have found males and winged females in the 

 nests in July, and August, and on July 21st and September 22nd, 

 1913, I observed isolated dealated females crawling about on paths 

 at Weybridge. On August 13th, 1914, I found a large colony in a 

 bank in the last mentioned locality which contained a number of 

 workers, three winged females, and between twenty-five and thirty 

 queens. 



Meinert described a mixed frontal gynandromorph, in which the 

 head is female in size, the thorax and external genitalia, as well as 

 the colour and sculpture of the body being male. The wings are 

 intermediate between those of the two sexes 10 . 



Bugnion captured a male and female of a small Myrmica in a 

 nest of M . lobicornis at Anzeindaz, at a height of 2000 metres in 

 the Swiss Alps, which were first recorded by Forel as a very curious 

 small form of the latter. He remarks however that had they not 

 been taken in company with the males, females, and workers of 

 lobicornis, he would have considered them to belong to another 

 species 16 . He subsequently described them as a new species under 

 the name Myrmica myrmicoxena [Verhandl. 66 Versamm. D. 

 Naturf . Arzte Wien 143 (1894)]. This ant is probably a worker less 

 parasite, or perhaps a guest-species, living in the nests of M. 

 lobicornis. 



I have taken the Bracon Pachylomma buccata Nees, and the 

 Dipteron Pseudacteon formicarum Verrall, hovering over workers 

 of lobicornis at Weybridge 42 , and the Collembola Cyphodeirus 

 albinos Nic., in the nests. 



STENAMMA Westwood. 



[ore^o?, narrow ; a^/xa, connection (i.e. the petiole)]. 



Type : Stenamma westwoodi (Steph.) West. ; West., 1840. 



The genus Stenamma is common to the Palaearctic Region 

 proper, and the Nearctic Region. Its origin is probably not boreal ; 

 it is not found in India, but occurs in Africa. The species are 

 predaceous, they prefer damp places, and are generally found 

 singly. We only possess one species in Britain S. westwoodi 

 West. 



^ Head long oval, longer than broad ; clypeus furnished with two fine 

 longitudinal carinae, the space between which being somewhat hollowed 

 out ; frontal carinae short, divergent ; frontal area deeply impressed, longer 

 than broad ; mandibles large, terminal border furnished with eight or nine 

 teeth, which are shorter and blunter posteriorly ; maxillary palpi four- 



