MYRMECOPHILOUS NOTES FOR 1912. 93 



ground." It is evident that these larvje devour (as with ^licrodoif^) 

 the pellets and droppings of the ants, otherwise they could not live so 

 long a time in a nest without any other food. 



DIPTERA. 



Ceratopof/on myrmecophilns, Egger.- — Several <? g were observed on 

 October 2nd hovering over my observation nest of F. rnfa. Other 

 J 3" were seen, as usual, at Weybridge, on July 10th, hovering over 

 ritfa nests. The ? appears to be rare, I have never taken it in nature, 

 once I bred it out of my F. rufa from Oxshott in 1898,"^ and again in 

 a rufa nest from Weybridge in 1906,''-^ and finally I found one in a 

 nest of F. exsecta from Parkhurst Forest in 1910. '^'^ 



PIn/lloiin/za sp. ? — -Taken in a nest of Tj. ftdi;/inosi(s, at Oxshott, on 

 July 9th. I gathered from Mr. Collin, who said this was not P. lasiae, 

 Collin, that this is not the other species recorded by me as Phi/llomy::a 

 sp. ? taken with the same ant at Birkdale'" and Darenth Wood.''' 



P. formicae, Collin. — Specimens were taken in nests of F. rufa at 

 Nethy Bridge, on May 17th. 



Phora aequalis, Wood. — Specimens were found in a nest of L. 

 fuliginosm at Wellington College, on April 17th. I am quite convinced 

 that the species of Phora I take with ants are regular Myrmecophiles, 

 •in spite of the fact that they may be taken awaj' from ants' nests, and 

 even in numbers. I took this species with the same ant at Darenth 

 Wood«'' in 1909, and again" in 1910. Mr. Wood-^" says that this 

 species is widely distributed and very common. 



Phora femorata, Mg. — One specimen was captured at Nethy Bridge, 

 on May 19th, which ran out of a nest of M. ruginodis, situated under 

 a stone. 



ICHNEUMONID^. 



Ceuteterus oprlmator, Grav. 



A specimen was found in a nest of M. ruginodis under a stone at 

 Nethy Bridge, on May 19th. 



BRACONID.E. 



Fhiphorus bistigniaticus, Morley. — Specimens were observed 

 hovering over rufa nests at Weybridge, on July 18th. 



Pachylotnma buccata, Breb. — Specimens were captured hovering 

 over ants in a nest of F\ fusca subsp. rufibarbis, at Weybridge, on 



30 Ent. Rec, 1912, p. 36. 



31 Ent. Rec, 1902, p. 17. 

 82 Ent. Rec, 1907, p. 4. 

 33 Ent. Rec, 1911, p. 60. 

 3* Ent. Rec, 1907, p. 4. 



S3 Ent. Rec, 1909, p. 289. 

 3« Ent. Rec, 1909, p. 289. 

 3T Ent. Rec, 1911, p. 61. 

 «« Ent. Mo. Mag., 1909, p. 61. 



