190 BRITISH SPECIES OP PHALANGIDEA OR HARVEST MEN. 



from Oligoloplms a species (0. spinosus Bosc. = Opilio liistrix, 

 Meade), which seems to me certainly to belong to this group, includ- 

 ing it in the genus Acantlioloplms C. L. Koch, of which we have 

 not yet found any, at any rate characteristic, species in Great 

 Britain. One of the species included by Mr. Meade in Phalangium 

 (0. mono P. urnigerum Meade), I have thought it best to include 

 in this genus, differing as it does from P. opilio, and others of that 

 genus, in the two distinguishing characters I have above mentioned. 

 (See above under Phalangium). As limited here, Oligoloplms 

 contains nine known British species, one of them 0. agrestis, 

 Meade, being one of our most abundant Harvest-Men. 



OLIGOLOPHUS MORIO, Fabr. 



Phalangium mono, Fabr. (1779). 



urnigerum Herm. Meade (1855). 



Oligolophus morio, Fabr. Sim. (1879). 



PI. C, fig. 15, 16, and PI. A, fig. 8. 



Female length 3 to 4 lines, male 2 to 3 lines. 



Female : Colour whitish yellow ; dorsal abdominal band strongly 

 and sharply angulated and of a deep brown or blackish hue edged 

 with black and with a narrow white marginal border. Its anterior 

 portion is distinctly continued on the cephalothorax and widening 

 there covers the greater part of it ; it is often divided longitudinally 

 by a pale stripe, and tapers to the hinder extremity, which is more 

 or less indistinct. The sides of the abdomen are more or less marked 

 with brown ; the under side is unicolorous. The denticulse on the 

 abdomen are very small and inconspicuous, often more or less absent. 

 Those on the cephalothorax aie also small, the three characteristic 

 ones are minute, of equal size, not very close together, in a trans- 

 verse line near the fore central margin of the caput ; behind each 

 of the outer ones of these three are a few others, if anything, 

 smaller and rather irregularly placed ; and with the 3 anterior ones 

 form a rough kind of transverse oval or nearly circular figure. 



Ocular eminence rather small, surrounded by two rows, each of 

 5-7 minute teeth or denticulse, and double (or nearly) the distance 



