HYPO0THONIU8 RUFULUS. 535 



in different specimens, and in the same specimen at 

 different ages ; it is most commonly that of very old, 

 tawny, port wine, but hardly as dark ; sometimes the 

 red, sometimes the yellow, is predominant. 



Texture smooth and slightly polished. 



Cephalothorax about one-third of the entire length, 

 much narrower than the abdomen ; almost conical : it 

 has considerable movement upon the abdomen. Ros- 

 trum pointed ; behind it the cephalothorax becomes 

 slightly concave-sided ; the base widens suddenly, and 

 then narrows so as to form a well-marked constriction 

 between it and the abdomen. The centre of the hinder 

 part of the dorsum of the cephalothorax is raised, and 

 there is a constriction in front of this elevation. 

 Rostral hairs fine, almost straight. Palpi long and 

 thin ; they show very conspicuously (almost their 

 whole length) from the dorsal aspect. Lamellar hairs 

 long, upright, setiform. Pseudo-stigmata dorsal. 

 Pseudo-stigmatic organs very long, almost filiform, 

 but eventually coming to a point, doubly-curved, some- 

 what recumbent, pectinated along the greater part of 

 the upper anterior edge only ; the teeth or hairs 

 forming the pectination are long and pointed, sparsely 

 but regularly placed. Interlamellar hairs long, fili- 

 form, not coming to a point. Apodemata not joined 

 to the sternum. The sternum imperfect. 



Legs of moderate length, the fourth pair when 

 stretched out substantially passing the hind margin ; 

 the third and fourth pairs, however, are usually held 

 much bowed (fig. 13), and are set under the abdomen. 

 The legs gradually diminish in thickness from the 

 proximal to the distal ends ; femora about as long as 

 the next two joints together ; genuals as long as the 

 tibiae ; tarsi the longest joints ; they are thickly clothed 

 with long fine hairs, almost all the other joints are 

 provided with setiform hairs which are arranged in 

 whorls on the two front pairs of legs. The tactile 

 hairs are long and fine. Claws monodactyle. 



Abdomen more or less shield- shaped, distinctly 



