THE MYRMECOPHILOUS COLEOPTERA 329 



Drusilla canaliculata, F. With various ants. I have taken it with Formica 

 sangioinea, fusca and exsecfa, Lasius fuliginosus, flavus and niger, and species 

 of Myrmica. 



Notothecta flavipes, Gr. Formica ruja. I once took it in numbers with F. exsecta. 

 Notothecta confusa, Mark. Lasiiis fuliginosus. 



Nofofhecta anceps, Er. Formica ruja. I have also taken it with F. exsecta, in 

 some numbers. 



Homalofa parallela, Man. Formica rufa. 



Lamprinus saginatus, Gr. With various species of Myrmica. I have taken 

 it with Formica sanguinea. 



Quedius hrevis, Er. Formica ruja and Lasius fuliginosus. 



Xantliolinus atratus, Gr. Formica rufa. 



Leptacinus formicetorum, Mark. Formica rufa, 



Othius myrmecopliilus, Kies. With various ants. I have taken it with 

 Formica rufa, sanguinea and exsecta, and Lasius fuliginosus. 



Scydmcenus godarti, Lat. Formica rufa. 



Claviger testaceus. Preys. Principal host, Lasius flavus. Secondly, L. alienus 

 and niger. Claviger longicornis, Miill., is found on the Continent with 

 Lasius umhratus, and ishould occur here. Father Schmitz shows that it 

 is taken with this ant under heavy, deeply embedded stones.* 



Bythinus glahratus. Rye. Ponera contracta. 

 Batrisus venustus, Reich. Lasius fuliginosus. 



Trichonyx viiirheli, Aub. Lasius flavus, Formica fusca and Myrmica species, 



Ptilium myrmecopliilum. All. Formica rufa. 



Ptenidium m'jrmecopliilum. Mots. Formica rufa and Lasius fuliginosus. 

 Ptenidium hraatzi, Mat. Formica rufa. 



Coccinella distincta, Fald, Formica rufa. 



Hetcerius ferrugineus, 01. Formica fusca and sanguinea, and Lasixhs flavus. 

 On the Continent it is found with several other species of ants. 



Dendrophilus pygmceus, L. Formica rufa. 



3Iyrmetes piceus, Pk. Formica rufa. 



Amphotis marginata, F. Lasius fuliginosus, 



Monotoma conicicollis, Aub. Formica rufa. 

 Monotoma formicetorum, Th. Formica rufa. 



Cetonia floricola, Hbst. Larva and pupa with Formica rufa. 

 Clythra (^uadripunctata, L. Larva and pupa with Formica rufa. 



* Since the above was written Commander Walker has found that he captured 

 it near Oxford in 1906. (Ent. Mo. Mag., 1912, p. 100). 



