36 Mr, J. W. Shoebotliam on some 



Dens l-segraented, thick at the base, but suddenly dimin- 

 ished in t^ize at about § from the proximal end, with several 

 chitin hooks and spines, as follows : — two large hooks at the 

 distal end, inner and outer, both of which overreach the base 

 of the niucro; three smaller, less curved hooks, situated about 

 equal distances apart, on the inner side ; one straight spine 

 on the outer side § from the proximal end. Dens ventrally 

 with numerous scales, dorsally with several long feathery 

 hairs. A feathery hair of uniform thickness arises at the 

 base on a small tubercle, and a simple short hair is present 

 on the outer side towards the distal eud. 



Mucro long and slender, with four teeth — apical, ante- 

 apical, and two dorsal. The relative distances of the teetli 

 from the base are as follows : — 17 : 26 : 35 : 39. The proximal 

 dorsal tooth is stout, blunt, and directed towards the proximal 

 end. Tiie mucro is provided with a thin transparent lamella * 

 or " mucronal sheath " which almost encloses it from the 

 base to the second tooth, and a narrow pointed lamella is 

 continued from the outer side beyond the apex of the mucro. 



Body-form short and broad. The relative lengths of the 

 body-segments as follows : — 



Th. Abd. 



Head- 



Ant, diag. ii. iii. i. ii. in. iv. v. vi. 



55 62 46 33 24 28 34 30 15 12 



Hair-covering short and scanty, but the head and body are 

 thickly covered with broad rounded scales. 



Colour white. 



Length '6 mm. 



Loc. Berkhamsted, Hertfordshire ; under stones. 



Habits. This species was found under stones amongst 

 decaying leaves in a garden at the end of October 1910, and 

 under stones embedded in soil at a place about ^ mile from 

 the first locality in November and December. A single 

 specimen was obtained at the end of February 1911. 



They were only found when the ground was moist, and 

 were not very active unless the light was strong, but when 

 the sun was shining on them they quickly jumped away. 

 Specimens were taken in December immediately after a sharp 

 frost. 



* These lamellEe are not firmly attaclied to the mucro proper, as iu 

 some of the mucrones they had become detached. 



