Mr, R. H. Meade on the British species 0/ Phalangiidse. 415 



Cephalothorax narrow ; the front part is somewhat semi- 

 circular, and the front margin projects into a central point, 

 which is elevated and prolonged into a horn-like process, about 

 half the length of the thorax, and projecting upwards and for- 

 wards. This horn is double at the base, the lower portion 

 forming a kind of spur, about half the length of the upper one, 

 and placed vertically beneath it, so as not to be visible when the 

 animal is examined from above. The sides of the thorax are 

 straight, and the posterior angles project backwards. The eye- 

 eminence is small, rather higher in front than behind, and sur«» 

 mounted by several blunt tubercles. The whole upper surface 

 of the thorax, as well as the abdomen, is scabrous, but destitute 

 of spines or bristles : behind the eye-eminence, and close to the 

 posterior margin of the thorax, are two blunt tubercles. 



The abdomen is wide and flat ; the apex is wide and rather 

 elevated, and furnished with four large, blunt, but short teeth, 

 which project beyond the margin, and are placed rather wide 

 apart from each other, at equal distances. Four longitudinal 

 rows of tubercles extend down the back, the two central rows 

 being nearer to each other than to the lateral ones, which ap- 

 proach the sides. Each row contains four tubercles, which are 

 much larger in the middle than in the lateral rows; in the 

 latter they are small, and sometimes indistinct. 



The falces are small and weak. The palpi are short, with the 

 third and fourth joints rather thickened. The first and third 

 pairs of legs are very short, the length of the femora not being 

 more than twice as much as the width. The second pair is 

 rather longer than the fourth, and more slender than any of the 

 rest. The coxai, trochanters and femora are all furnished with 

 long blunt teeth ; those on the coxse projecting round the margin 

 of the thorax, and looking as if attached to it. 



The colour of this species is brownish yellow, mottled and 

 striped with dark brown; a double brown line encircles the 

 thorax, intersected with cross bars; there is a dark mark on 

 each side of the eye-eminence, and the tubercles on the posterior 

 margin of the thorax are seated on dark spots, as are also those on 

 the abdomen. All the tubercles are pale yellow. Four dark stripes 

 extend from the tubercles at the apex of the abdomen towards the 

 dorsum. The legs are annulated with brown in adult specimens. 



This peculiar Phalangium, which differs considerably in its 

 structure from any other known species, bears considerable re- 

 semblance to the animals composing the genus Trogulus. The 

 only locality in which I have found it was on the chalk hills 

 near Hampden, in Buckinghamshire, where it was tolerably 

 abundant among moss in August 1854, It is probably not 

 uncommon in the south of England. 



