5-i STAPHYiJNiD^, [Alemeles. 



sometimes the disc of tliorax dark ; head much narrower than thorax, 

 antennse long and stout, entirely ferruginous, first joint much broadened, 

 third much longer than second, 4-5 transverse, 6-10 longer than broad, 

 eleventh very long and acuminate ; thorax strongly transverse, finely 

 sculptured, much narrowed in front, posterior angles strongly and sharply 

 projecting, side margins very widely raised, disc somewhat convex with a 

 more or less obsolete central furrow ; elytra somewhat narrower and 

 slightly longer than thorax, very finely punctured ; hind body rather 

 short, almost impunctate, with the front segments furnished at their sides 

 with a thick yellowish fringe directed backwards, seventh segment very 

 strongly emarginate with sides produced into a rather sharp lobe ; legs 

 ferruginous. L. 4 mm. 



The sexual difterences of the hind body appear to be slight and 

 hardly noticeable. 



In nests of Formica fusca, Myrmica scahrinodis, rughiod'is, and Icevinodis ; accord- 

 ing to Mulsaut and Rey it occurs with " Mt/rmica rubra, and more rarely witii Formica 

 fusca, rufa, and cunicularia ;" not uncommon in the London district and the Mid- 

 lands, hut I know of no locality further north thiiii Lincoln, where I have taken it 

 with F. fusca; it is recorded from Devonshire, Clieshlre, and North Wales. 



A. paradoxus, Grav. This very distinct species is easily separated 

 from the preceding by the very different shape of the thorax, which is 

 very little narrowed in front, so that the sides are almost parallel, and 

 has the posterior angles very much less produced ; the third joint of the 

 antennae is much longer in proportion to the second, and the penultimate 

 joints are evidently shorter ; the hind body also is evidently, although 

 finely, punctured, and also much less shining ; the colour appears to be 

 slightly darker. L. 4 mm. 



In nests of Myrmica lavinodis and Formica fusca ; according to Mulsant and Rey 

 it is not rare in France under stones in the months of May and June in company with 

 M. rubra, and occurs more rarely with F. nfa iiuAfuliginosa; very rare in Britain; 

 Charlton, Surrey; Folkestone (Lewis); Bournemouth (Saunders); Weston-super- 

 Mare (Crotch) : I took a single specimen in April, 18S5, on the cliffs between Sandown 

 and Brading, Isle of Wight. 



IKEVRI^EDONZA, Erichson. 



This large and important genus is rightly called by Dr. Sharp a " poly- 

 morphic " genus, as it appears at first sight to be made up of many dis- 

 cordant elements ; in fact there is no genus Ijelonging to the Staphy- 

 linidse in which the members have a more widely differing facies : the 

 species are about one hundred iu number, as at present described, but it 

 is probable that thoy will be found to be far more numerous, as Dr. 

 Sharp has lately described nineteen new species taken by Mr. Champion 

 in Central America ; the range of the genus is very wide, from Siljeria 

 and Russian America to Ceylon and South America ; there are about 

 thirty European species, of which nine are found in Britain ; as a rule 

 they are associated with ants, but it does nut appear to be at all certain 



