HOPLOPHORA AEDUA. 665 



other British species which I am acquainted with by- 

 its tridactyle claws and pointed abdomen. I believe 

 that the British species is Koch's H. ardua ; but, as so 

 often happens, it is very difficult to arrive at any cer- 

 tainty from the drawings and descriptions of that 

 author ; he refers to the abdomen as being more 

 polished than is usual in British specimens. 



Colour. — Generally not even all over the creature 

 but varying through several shades of light yellow- 

 brown and red-brown. The whole creature has a 

 semi-transparent effect ; legs almost yellow. 



Texture ordinarily dull without gloss, abdomen occa- 

 sionally more polished ; the whole marked with a 

 multitude of very fine undulating lines which are not 

 parallel but rather alternate ; these give the creature 

 a granular appearance. The whole dorsal surface is 

 frequently covered with fine powder, like the bloom on 

 a plum. 



Form. — A longish oval 'pointed posteriorly. 



Cephalothorax. — -Aspis flat and shallow compared 

 with those of other British species. Palpi large and 

 conspicuous (from the side). Maxillae large, nearly 

 straight externally, strongly elbowed internally ; divided 

 into one large lobe and two well-marked smaller lobes, 

 each lobe being double (in the thickness of the maxilla). 

 Pseudo-stigmata not hidden. Pseudo-stigmatic organs 

 long, filiform, standing nearly upright, very slightly 

 thickened towards the distal end. Interlamellar hairs 

 very long, setiform. Two double ridges start, one from 

 above and the other from below and behind each 

 pseudo-stigma, and run forward along the side of the 

 aspis to its lateral edge ; the lower is much the shorter, 

 and they are further apart distally than proximally. 

 There are two pairs of setiform hairs along the median 

 line of the cephalothorax besides those before men- 

 tioned, the hinder pair is much the longer ; they may 

 be^the homologues of the lamellar and rostral hairs, 

 but are not similar in position. 



Legs short ; of the ordinary form in the genus ; 



