196 BRITISH SPECIES OP PHALANGIDEA OB HARVEST MEN. 



many other parts of England, as well as from Scotland. It is closely 

 allied to the next species, 0. tridens C. L. Koch, hut may easily be 

 distinguished by the shorter and more unequal 3 spines on the fore 

 margin of the caput, by its almost unarmed eye-eminence, the less 

 pointed form of the hinder part of the abdomen, and the circular 

 notch at the anterior margin of the genital plate, as well as by its 

 more varied colouring which in 0. tridens is of a much more 

 uniform yellow-brown. The latter is also not so common, and is 

 most usually found among moss and herbage in swamps and other 

 wet places. 



OLIGOLOPHUS TRIDENS. 



Opilio tridens, C. L. Koch (1836). 



Oligolophus tridens, C. L. Koch Sim. (1879). 

 PI. D, fig. 23. 



Female, length, 2f to 3 lines ; male, 2 to 2J lines. 



This species, though rather larger, is mearly allied to 0. agrestis 

 Meade. The general coloration is, however, of a more yellow 

 brown, and the darker portions are often of a richer and deeper 

 bistre-brown, never assuming the varied hues of 0. agrestis. The 

 cephalothorax is of a more or less completely deep brown colour, 

 which is continued in the normal dorsal band on the abdomen ; this 

 band is scarcely angulated, the sides being nearly parallel, with 

 broken but strong deeper coloured marginal markings, and it does 

 not often extend beyond the truncation at the thiid segment, the 

 surface between that and the end of the abdomen is often paler 

 than the rest of the ground colour, and very conspicuous. On each 

 side of the dorsal band, towards and at its hinder part, the surface 

 is deeply suffused with dark brown, generally, however, keeping 

 within the longitudinal limits of that part of the band. 

 The posterior part of the abdomen has a rather drawn out or 

 elongated appearance. The Cephalothorax has several distinct 

 spines or denticulae on its margins. Those on its upper side are 

 also stronger than in 0. agrestis, the three in a transverse line at 

 the central part of the fore-margin of the caput are longer, more 

 nearly of the same size (though the central one is slightly the 



