36 Mr. J. W. Slioebotham on some 



Dens 1-segmented, thick at the base, but suddenly dimin- 

 ished in size at about | from tiie 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 mucro; 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 end. 



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

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

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

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

 end. The 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- —^ s r ''^ s 



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



55 02 46 33 24 28 34 30 15 12 



II air-covering short and scanty, but the head and body are 

 thickly covered with broad rounded scales. 



Colour white. 



Length '6 mm. 



Loc. Beikhamsted, Hertfordshire ; under stones. 



Habits. This species was found under stones amongst 

 decaying leaves in a garden at tlie end of October 1910, anil 

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

 the first locality in November and December. A single 

 specimen was obtained at the end of February 1911. 



Tliey were only found when the ground was moist, and 

 were noc very active unless the light was strong, but w hen 

 tlie sun was shining on them they quickly jumped away. 

 (Specimens were taken in December immediately after a sharp 

 frost. 



♦ These lauiellaj are not fn-uily nltached to the mucro proper, as in 

 some of the mucroues thev had become detached. 



