838 



hue. The abdomen is suffused with a sooty-grey colour, con- 

 siderably obscuring the longitudinal characteristic stripes. The 

 legs are longer, and also of a sooty-brown colour. The palpi are 

 like the legs in colour, and short; the radial and cubital joints 

 particularly so, the former is slightly the shortest, and does not 

 appear (so far as I can make out) to have any external apophysis. 

 The digital joint is of a narrow-oval form, and is longer than 

 the radial and cubital joints together. The palpal organs are 

 simple in structure, and have a small, prominent, corneous 

 process near their fore extremity. 



Found (but rarely) at Bloxworth — one on a gate post in the 

 village, in June, 1862; others on the ground among 

 grass and low plants. I have also found it among the star 

 grass on the Sandhills, by the seaside at Studland ; here it was 

 that in June, 1877, I first met with the adult male. Numbers 

 of immature examples of both sexes were sent to me in 1866 

 from Wicken Fen, Cambridgeshire, where it appears to be 

 abundant. It is very nearly allied to, and, perhaps, identical 

 with, Thanatus striatus, 0. L. Koch, of which, however, the male 

 has not yet been described. 



GENUS TIBELLUS, Simon. PHELODEOMUS, Blackw., in 

 part, and THANATUS, Cambr., in part. 



This genus differs from Thanatus in its, generally, elongated 

 form. The cephalo-thorax is always longer than broad, whereas 

 in Thanatm it is usually as broad as long ; very seldom longer 

 than broad. The abdomen of the present genus is especially 

 long and narrow. The lateral eyes of the posterior row are also 

 much further removed backwards than in Thanatm, being 

 separated from the fore laterals by a very wide interval. The 

 eyes of the anterior row, with those of the hind-central pair, 

 form a small compact hexagonal group, from which the hind- 

 lateral eyes are conspicuously removed. The fore-laterals are 

 slightly larger than the fore-centrals, but the hind-laterals are 

 the largest of the eight. 



The spiders L of this genus are usually found on coarse sedgy 



