Onjpoda.^ STAPHTLINIUiE. 35 



and the whole or nearly the wliolo of the last two testaceous, very finely 

 IJunetured, the punctuation being a little less close on the apical seg- 

 ments ; legs clear reddish testaceous, posterior tarsi with the first joint 

 equal to the three following together. L. 2f-3 mm. 



Male with the ventral plate of seventh segment of hind body 

 rounded. 



In nesis 0^ Formica ri(fa ; somewhat local, but not uncommon; London district, 

 grntrally distiil)nted ; Hustiniis; Ta in worth ; Bewdloy Forest; Buildon Wood, 

 Leicestershire ; Scarboroutrh ; Scotland, local, Tay, Dee, and Moray districts. 



O. recondita, Kr. (lucem, W. C). Rather broad, shining, thickly 

 punctured and pubescent, of a bright testaceous or reddish brown 

 colour with the head and central portion of hind body darker ; antennas 

 entirely testaceous, rather stout, third joint plainly shorter than second, 

 5-10 gradually broader, the latter strongly transverse, eleventh broad but 

 rather short ; thorax broader than long, as broad as elytra, rather convex, 

 without any central impression or basal furrow ; elytra about as long as 

 thorax, finely, but plainly and somewhat rugosely, punctured ; hind 

 body parallel-sided, with the apical segments somewhat less closely 

 punctured than the basal segments ; legs testaceous. L. 3 mm. 



In nests of Formica rufa, and, I believe, in o^\\ev habitats ; apparently very rare ; 

 Highgate; Ashtead ; Loughton (Essex); Buddon Wood, Leicestershire; Scotland, 

 Clyde district (Paisley). 



This species somewhat resembles 0. exoleta in general appearance, 

 but differs in its broader and more parallel form ; from 0. ■pallidula and 

 soror it may be separated by its larger size and longer elytra : it differs 

 from 0. formiceticola in being of a much brighter testaceous colour, in 

 having no trace of central furrow on thorax, and in the less closely 

 punctured apex of hind body. 



O. haemorrlioa, ]\rann. (promiscua, Ef., m!jrmecopJiila, Maerk.). 

 Narrower in proportion than the other species of the group, finely and 

 thickly punctured aud pubescent, rather shining, pitch-black with the 

 apex of hind body testaceous and the elytra sometimes obscurely 

 brownish ; antennae reddish with base lighter, short and rather stout, 

 third joint shorter than second, 5-10 strongly transverse, eleventh short, 

 evidently not as long as the two preceding ; thorax transverse, about as 

 broad at base as elytra ; elytra scarcely longer than thorax, finely, 

 thickly, and somewhat rugosely punctured ; hind body parallel-sided, or 

 witli sides slightly rounded, very finely punctured, the punctuation being 

 sometimes a little less dense towards apex; legs testaceous or reddish 

 testaceous, posterior tarsi with the first joint as long as the three follow- 

 ing united. L. 2-2 j mm. 



Male with ventral plate of seventh segment of hind body rounded. 



In moss, haystack refuse, &c. ; also found frequently in nests of Formica rufa ; 

 generally distributed and conunon in the south, and the London, Fen, and Midland 



D 2 



