450 ARACHNIDA——PHALANGIDEA CHAP. 
Two species of Sclerosoma are found in England, S. quadri- 
dentatum occurring not uncommonly among moss or under 
stones in various parts of the 
country. Its back is studded 
with wart-like tubercles, which 
give it a characteristic appear- 
ance. 
The PHALANGIINAE are soft- 
bodied Harvestmen, always with 
long legs, which in the genus 
LTiobunum attain an inordinate 
length. There are nine European 
genera, Liobunum, Prosalpia, 
Gyas, Oligolophus, -Acantholo- 
ia oss een phus, Phalangium, Dasylobus, 
(After Pickard-Cambridge.) Platybunus, and  Megabunus, 
comprising in all about fifty 
species. Five of these genera are represented in England. 
The familar Phalangids, with small, almost spherical bodies 
and ridiculously long legs, belong to the genus Liobunum, L. 
rotundum being the common species. It is mature in autumn, 
when it may be seen scampering at a great pace among the 
herbage. It very readily parts with its limbs, and Pickard- 
Jambridge' relates that he once “saw one running with 
very fair speed and facility, having lost all but two legs, 
an anterior one on one side and a posterior one on_ the 
other.” 
The Harvestmen so frequently seen on walls belong, as a rule, 
to the genus Phalangiwm. The best known example is Phalangiwm 
opilio (the P. cornutum of Linnaeus), the male of which possesses 
a remarkable development of the chelicerae. 
The genus Oligolophus is well represented in this country, nine 
species having been recorded. They do not differ greatly from 
Phalangium, but have, as a rule, more massive bodies, and rather 
stout, though tolerably long legs. The largest English Harvest- 
man, not rare under stones at Cambridge, is 0. spinosus, whose 
body measures half an inch in length. 0. agrestis is perhaps the 
commonest British Phalangid, and is abundant in woods and 
among herbage, and on low trees. 
1 Monograph of the British Phalangidea, Dorchester, 1890. 
