BRITISH SPECIES OP FALSE-SCORPIONS. 209 



CHTHONIUS ORTHODACTYLUS. PL A, fig. 7. 



Syn : Obisium orthodactylum Leach. Zool. Misc. iii., p. 51, 



pi. 141, f. 2, 1817. 



Chthonius orthodactylus Leach Sim. Araneides de 

 France, torn. 7, p. 73, 1879. 



Length scarcely more than f rds of a line. 



The Cephalothorax falces and abdominal segments are of a dull 

 yellowish-brown colour, the former tinged with olive. The legs 

 are paler and the palpi tinged with reddish. 



The Cephalothorax is perceptibly, but not greatly, wider in 

 front than behind. 



The eyes are of tolerable size, the posterior eye rather the largest, 

 and are divided by an interval equal to scarcely more than the 

 diameter of the posterior one. The anterior eye is no more than 

 half its diameter from the fore margin of the caput. 



The Cephalothorax is smooth and glossy, and with the abdomen 

 is clothed thinly but pretty regularly with prominent slender spine- 

 like tapering, sharp-pointed bristles ; the legs and palpi are furnished 

 with finer, but some longer, hairs. The bulbous portion of the 

 pincers is very moderately tumid, the claws straight and double or 

 more the length of the bulb. When looked at in profile the inner 

 outline of the pincers is a very little curved, scarcely amounting to 

 even the most obtuse angle between the bulb and the fixed claw. 



The falces are strong, and equal in length to the Ceplialotliorax ; 

 they are furnished with a few spine-like bristles above. 



I have found this species at various seasons of the year, though 

 rarely, among dead leaves and moss in woods at Bloxworth, the 

 specimens being identical with the type in the Leach Collection, 

 British Museum. 



CHTHONIUS RAYI. PI. A, fig. 10. 



Syn : CJithonius Rayi L. Koch. Darst. Eur. Chernet, p, 48, 

 1873, and E. Simon, Araneides de France, torn. 7, p. 74, 1879. 



Length from 1 line to IJrd. 



This species is nearly allied to C. orthodactylus. It is, however, 

 larger, and of a darker brighter colour, the falces and palpi strongly 



