PSEUD0SC0RPI0NS, BRITISH AND FOREIGN. 171 



Legs. The outer corner of the coxa of the I. pair with a long, 

 brown protuberance ; the inner corner with a small, but distinct, 

 light point. The femora of the two posterior pairs of legs 

 moderately broad. Claws simple. 



Length of the largest specimen 2*50 mm., breadth 1*13 mm. 



Measurements. Cephalothorax : long. 0*76 ; lat. 0*74. Mandi- 

 bles : long. 0*50. Femur: long. - 93; lat. 0'24 at the extremity. 

 Tibia: long. 0"57 (stalk excluded 0*46); lat. 0*27. Hand: 

 long. 0-76 ; lat. 0-40. Fingers : long. 0*67 mm. 



The above description is based on two specimens from Port 

 Erin (Isle of Man), taken by Dr. A. R. Jackson, in rock-crevices 

 below high-water mark. I have also seen a specimen from 

 St. Ives (Cornwall), collected by Mr. F. W. Wilson, and one 

 from Scotland, at the head of Loch Fyne, near Shirvan (Argyll- 

 shire), taken by the Rev. R. Godfrey, in both cases under 

 embedded stones below high -water mark. 



I have no doubt that the specimens taken in France by Grube 

 at St. Malo and by Moniez near Boulogne, the latter specimens 

 published by Moniez under the name Obisium littorale, n.sp., must 

 be referred to this species. 



This interesting and, till now, little known species very much 

 resembles, by its slender hand, Obisium validum, L. Koch, from 

 Syria, but the latter has no tooth on the inner corner of the 

 coxa of the I. pair of legs, the tibia of the palps not convex on 

 the inner side, cephalothorax longer than wide. 



Obisium muscorum, Leach. 



This species is widely distributed in England and Scotland, as 

 well as on the Continent, where it has been found from north of 

 the polar circle in Norway to the Mediterranean. Mr. Wallis 

 Kew sent me specimens from Kent, Essex, Buckinghamshire, 

 Ayrshire, Midlothian, Argyllshire, and Ross-shire ; further from 

 Snowdon (Wales), at about 3,500 ft., in the last locality taken 

 by Dr. A. R. Jackson. 



Chthonius tetrachelatus, Preyssler. 



England : Deal (Kent), collected by Mr. Wallis Kew. 

 Journ. Q. M. G, Series II. — No. 61. 13 



