BRITISH SPECIES OF PHALANGIDEA OR HARVEST MEN. 185 



The male is of a shorter form and broader in proportion to its 

 length than the female, resembling the female closely in colours 

 and markings, which, however, are generally less well defined. 

 The falces are armed with a strong, prominent, sharp, conical, 

 hornlike protuberance near the extremity towards the outer side 

 and near the articulation of the fang. This, however, is only 

 developed at maturity. The segments of the abdomen in this sex 

 are also unusually well marked on the under side. 



This species is abundant in the Bloxworth district, among herb- 

 age, and underwood, as well as among dead leaves and moss in 

 woods, becoming adult in spring and early summer. It appears to 

 be widely distributed, at any rate in the South of England, and I 

 have also received it from the North of England and Scotland, as 

 well as from Devonshire from Mr. G. C. Bignell. 



PLATYBUNUS TRIANGULARIS. 



Opilio triangularis Herbst (1799). 



Platybunus denticornis C. L. Koch (1843). 



Platybunus triangularis Sim (1879). 

 PL C, fig. 13. 



Female, length 2 lines, male 1J line. 



This species is nearly allied to P. corniger, which it resembles 

 closely in most of its characters, but may easily be distinguished by 

 its smaller size, and also by its generally more ashy-grey colour. 

 The abdominal dorsal band is dark brown, in general distinct, 

 margined and spotted with white ; some of the more conspicuous 

 spots forming two parallel longitudinal rows, two white spots being 

 in a transverse line on each segment. This band is also truncated 

 at the third segment from the end but continued to the anal plate 

 in a diminished and indistinct form, and margined with white. 

 The rest of the upper side and sides are also thickly mottled and 

 spotted with white. 



The eye-eminence is larger in proportion than in P. corniger, 

 and the tubercular denticulije are shorter and blunter, and usually 

 fewer in number. 



