230 BRITISH SPECIES OF FALSE-SCORPIONS. 



groove or indentation, the posterior indentation (more or less visible 

 in the genera CheUfer and Chernes), except is scarcely represented 

 as a shallow depression. Eyes none ; falces very small ; legs short, 

 supernumerary joint (trochantin) very short and only on the third 

 and fourth pairs. The moveable claw of the falces ends with a 

 membranous galea. 



One species only of this genus is as yet recorded in Britain. 

 France possesses one other. 



CHIRIDIUM MUSEORUM. PI. C, fig. 21. 



Syn : CheUfer museorum, Leach. Zool. Misc. iii., p. 50, pi. 142, 



fig. 4 (1817). 



Cliiridium museorum, Simon. Arachn. de France, torn. 

 7, p. 43, pi. 18, fig. 19, 20. 



Length f rds of a line. 



The cephalothorax and abdomen are together of a broadish regular 

 oval form, pointed in front and round behind. Cephalothorax and 

 palpi dark red-brown, dbdomenal segments rather paler. The surface 

 of cephalothorax, abdominal segments, and palpi are densely and 

 rather coarsely granulose. The transverse indentation is strong, 

 and the cephalothorax is also longitudinally depressed or indented, 

 at least in the only examples I have, which are dried and mounted 

 on card. The hairs are very short, fine, simple, and white. Palpi 

 rather long, not very strong ; humeral joint distinctly longer than 

 the cubital. The bulb of the pincers and the claws are equal in 

 length. The axillary joint is strongly and doubly protuberant at 

 its base on the outer side. 



This little species cannot well be mistaken for any other one of 

 the Chernetidea. It is found in old houses, under bark of trees, 

 among old books, &c. It appears to be rare in Great Britain. 

 Examples were sent to me some years ago from Glanville's Wootton 

 by Mr. C. W. Dale, and I have a specimen taken at Blox worth, as 

 well as one found under old bark in Epping Forest by my son (R. 

 J. P. Cambridge). Mr. C. F. George, of Kirton-in-Lindsay, 

 Lincolnshire, tells me he once found a great number of this species 



