352 Mr. H. Donisthorpe on 



motionless for some time, it looks like a small lump of 

 earth. 



Astilbus canaliculars, F. 



This beetle also has a strong superficial resemblance to 

 an ant, especially when running. It is generally found 

 with ants, and may accompany a variety of species of 

 these Hymenoptera. 



Sipalia testacea, Bris., Arena octavii, Fauv., Phytosus 

 baliicus, Kr., and P. nigrivcntris, Chevr. 



These small beetles occur under sea-weed on the sea- 

 shore and are so coloured as to escape detection amongst 

 the sand. 



Emus hirtus, L. 



This large beetle, though very rare in England, is 

 common on the Continent. It is clothed with golden 

 hair like a humble bee, and altogether has a general 

 Hymenopterous and dangerous look. Mr. A. Luff when 

 recording its capture in Alderney (Ent. Mo. Mag., xxxvi., 

 p. 237) says, " Rye says it resembles a humble bee in flight, 

 but Mr. Marquand says it looked more like a wasp, only 

 with the peculiar flight of a beetle." 



Ocypus olens, Mull. 



This beetle has the habit, in common Avith most of the 

 Staphylinidx, of turning up the tail in a formidable-looking 

 manner when molested as if it could sting. This is one of 

 the examples pointed out by Wallace (Darwinism, p. 210). 

 It can also bite severely, and possesses two white " stink 

 glands " which are exerted from the apex of the abdomen 

 when the insect is irritated. 



Stilicus fragilis, Grav. 



All the species of Stilicus, more especially S. fragilis, 

 have a very ant-like appearance. S. fragilis has a red 

 thorax, and when it occurs at all, is to be found in numbers 

 in faggot-stacks, etc. I have taken it freely at Shirley, 

 and when beaten out on to a paper the beetles remind one 

 most forcibly of the wood-ant Formica rufa. They also 

 have the habit of appearing on the top of a heap of faggot 



