MILLEPEDES. 223 



earth and stones, and under rubbish, such as bricks 

 and pieces of wood, as well as in moss, or under bark ; 

 and I have found the flattened Snake-millepedes in 

 heaps of leaves blown together by the wind; also they 

 are said to propagate most freely in undisturbed 

 ground. Therefore it would appear that thorough 

 cultivation of the land, removing rotten roots from 

 infested ground, and also removing all the rubbish 

 under which they shelter, would be good treatment ; 

 likewise good dressings of fresh gas-lime on infested 

 ground could not fail to be of service. 



Jiilus terrestris and J. londinensis, figured p. 222, 

 are of a dark lead or pitchy colour ; the J. imlchellm 

 is also cylindrical, but is much smaller, and of a white 

 or ochreous colour, and when magnified will be seen 

 to have a double row of crimson spots along each side, 

 excepting on the four first and five last segments. 

 From these it takes its n^i-meoifjattatas, or "spotted " 

 Millepede. After death the colour changes to a 

 general tint of red purple. This Millepede is exces- 

 sively fond of Mangolds, and the taste may be 

 serviceably turned to account by using slices of Man- 

 golds as traps. Cotton cake will also attract them 

 from attacked crops. Salt or nitrate of soda in 

 solution will kill this kind of Millepede rapidly, but 

 when applied so as only to dissolve gradually into the 

 soil does not appear to do them harm. 



The Polijdesmus cojnplanatus, or "flattened Mille- 

 pede," is distinguishable by being flattened on the 

 back, and by being a little dilated at the sides. It is 

 of a lilac or greyish colour above, whitish below, and 

 has the back granulated. It is stated to be similar 

 in its habits to the Snake Millepedes. 



Acarina, or "Mites," — of which the "Spinning 

 Mite," commonly known as the Red Spider of Hops ; 

 the Harvest Mites; and Tyrogyplius loiuiior, figured 

 p. 224, a Mite found in hay, are familiar examples, — 

 form one of the orders of the class Arachn'ula, which 

 includes the true Spiders, Mites, Scorpions, &c. 



