5.7^ 



IXDEX. 



Second Order — continued. 



Sand-worm .... 



Nereids ..... 



Singular structure of mouth. 



Erroneous notions concerning worms 



The sea mouse . 

 Third Order:— 



Tubicolous annelidans. 



Serjiulae ..... 



Shells of serpuliB 



Singular trap-door 



Terebellaj ..... 



Construction of their residence 



CHAPTER X. 



Myriapoda 



Intermediate between red-blooded worms and 



Structure of myriapods 



Myriapoda remarkably distinguished from 



perly so-called 

 T\yo families belong to this Class . 

 Millepedes and centipedes . 

 Millepedes, how distinguished 

 Their habits .... 

 Centipedes .... 



Their formidable mouth 

 Giant scolopendra 

 Forked ceutiijede 

 Electric scolopendm , 



m sects 

 nsects, pro- 



CHAPTER Xr. 



Insects ........ 



How to study insects . ..... 



What is an insect ...... 



Three principal portions of body . . . ,* 



Divisions of leg of insect ....'. 



Wings of insect ......' 



Diversity in construction of instruments for p-o'curin 



nourishment ...... 



Mouths of insects divided into two classes 



Their foi-mation •....', 



Organs of sense in insects . . . 



Eyes of insects . . . , * . 



Respiratory system of insects . . . . 



Admirable contrivance for preserving the flexibi'litv r 



their air tubes 

 Extraordinary strength of insects . ] 



No insect in its winged condition permitted to grow* 

 Metamorphosis of insects 

 Order Coleoptera •.....*' 



Characteristics of coleopterous insects ..*.', 



