'911.] 67 



Homalota occulta (?), H. fmtgivora, II. suhsinuata (commonly), Qiiedius 

 mcmrus (1), Philonthus ■proximus, P. addcndus (1), P. albipes, and a Rhizophatjxis 

 parallelocollis, wei'e taken in garden rubbish heaps ; one Scopseus sulcicollis on a 

 withered cabbage leaf; one Homalota divisa among bones; Pteryx suturalis 

 from mouldy bark ; one Quedius lateralis in fungus, in company with a swarm 

 of Taehinus humeralis ; one Cryptophagus populi on door post of house, and one 

 in the scullery window ; and Ptinus sexpunctatus in an outhouse ; several Myce- 

 tsea hirta, Cryptophagus hicolor, and Atomaria munda, under boards in an old 

 fowl-slied ; and, taken variously, Amara ovata, Oxypoda annularis, Sericoderus 

 lateralis, Helocerus claviger, Callidium violaceum, Tetrops prieusta, Magdalis 

 pruni, and Scolytus multistriatus. — Id. : January 20th, 1911. 



Trichonyx sulcicollis, Reich., and Amauronyx (Trichonyx) marheli, Auhe, as 

 mymecopMlous insects. — In the Ent. Mo. Mag., 1910, p. 213, Commander Walker 

 records the capture of these two species, but not in company with ants. As 

 this might give the impression that they only occur with ants by chance, I 

 have written the following short notes : — 



Trichonyx sulcicollis, Eeich. — Eeitter says that the species of this genxxs 

 are generally found with ants (Naturz. Inst. Deutschl. iii, 2, 1885, p. 136), and he 

 records T. sulcicollis with Lasiiis hrunneus (I.e.). Bedell captured it witli Ponera 

 contracta in the environs of Paris (Ann. Soc. Ent. Fr. 1872, p. 41). Ganglbaiier 

 states that Trichonyx lives with ants (Kilfer von Mitteleiu-opse ii, 1895, p. 799), 

 and that T. sidcicollis occurs in old trees and tree stumps with Lasius hrunneus 

 and Ponera contracta. It is true, however, that there is only one record of the 

 myrmecophilous habits of this species in this country, when Douglas and Scott 

 took it imder bark of old elm stumps in some niimbers, in company with ants, 

 at Lee, Kent Commander Walker kindly indicated the position of the tree in 

 the New Forest in which he and Dr. Sharp took T. sulcicollis, and I went 

 doAvn to look for it on July 8th. I must admit that the tree showed uo 

 evidence whatever of the presence of ants, past or present, and most of the 

 specimens I took were found in the rotten wood of the tree itself. A fungoid 

 growth was present on, and in, the wood which contained the beetles. Judging 

 by the Continental records, I think this species must be considered in part 

 myrmecophilous. 



Amauronyx mdrkeli, Aubc. — Forel records this species as found rarely with 

 Ponera contracta at Sion, Valais (Fourmis de la Suisse, 1873, p. 426) ; Skalitzky 

 found it with red ants (Myrmica Isevinodis?) in Bohemia (B. E. Z. 1874, p. 127) ; 

 Wasmann says it occurs frequently with Tetramorium caespitum, near Prague. 

 Ganglbauer writes : The species of this genus are likewise ant-guests. He 

 gives " Central Eui ope, with Tetramorium caespitum and Ponera contracta (I.e.)." 



In this country it is generally found with ants. The following captures 

 are recorded : Matthews and Crotch, " with Lasius fuliginosus " in a tree near 

 Cambridge; F. H. and E. S. Waterhouse, "with a small yellow Myrmica" 

 (Lasius Jlavus ?) on Seaford Downs ; Fowler, " under a stone with ants " at 

 Sandown, I. W. (in his Col. Brit. Isles., vol. ii, p. 98, he writes : " visually in 

 company with ants") ; F. O. Pickai'd-Cambridge, "in a nest of Lasius Jlavus " 



