der '///} vi n ■ /,M ;: 



etc., though the bristle-taile prefer warm and drysituati 



and cither, as it I he Cinura, r in the 



PoduridaB, vigorously leap by means of a tonga] 



the end of the body, which on being n 



the inseel high in the air. The higher members of the 



order, as Campodea ami S rella, are sting 



links between the true insects and the centipedes (J/i 



jimhi). In many Podurids the trachea' are wantil 



S b-orderl. Collembola.— The spring-tails are degraded 

 forms, with the mouth-parts quite rudimentary, am: 

 tracted within the head, only tin- ends projecting. What 

 ci rrespond to the anal stylets of Campodea and Lepisma 

 are in the Podurids united at the base and bent under the 

 hind body t" form the spring, which is held in place by a 

 hook "!• on the under side «>f the hind body is 



icker (collophore), and as no other i 

 Bess this singular apparatus, the group is named from it 

 ' . which means to throw out a 



adh< . Their bodies arc covered wit) 



spring-tails occur everywhere under leaves, the 

 bark of trees, etc., and rarely live except in moisl 

 places, where their are deposited. The snow- 



ed utes nivicola) \< sometimes .-ecu in 

 great numbers leaping on snow. The} 

 should he preserved in vials of alcohol, and 

 can he collected by placing an ether vial over 

 them and allowing the creature- to spring 

 into it. or the finger wet with the saliva can 

 be lightly laid on t hem. when t hey can he 

 transferred to a vial of alcohol. They can i\ 



also he mounted in balsam on -lass si; 



Family Poduridx. -Body long and slender, head - 

 plumbi - Linn.); or body short, SmyntAurttt 



5 b-order 2. Symphyla. A remarkabh i i 

 having the head of a Campodea, while tin has 



a pair of legs to each joint. lik( the centi 



Family Scolopendrellidce. with the characti - 

 *pendrrlla immaculate Newport 



