152 



CLASS-BOOK OF ZOOLOGY. 



642. On what animals is the Flea found ? Describe its metamorphosis. 



643. What do you know of Ticks ? 



644. What do you know of the feet and weapons of Spiders? 



645. What is the consequence of their bite? 



646. Where are they found, and what is deserving of notice ? 



647. What can you say of their warts ? 



648. What of their threads? 



649. Why cannot silk be manufactured from Spider-webs? 



650. On what do Spiders feed, and why do they lead a solitary life ? 



651. In what respect do Scorpions resemble Crabs? 



652. Where are Scorpions found ? 



653. On what do they feed, and what do you know of their sting? 



654. Describe the Crab. 



655. What do you know of their feet, antennae, and shell? 



656. What can you say of their reproductive power ? 



657. What is the principal material from which their new shell is 

 hardened ? 



658. On what do they feed, and what insects are classed with them? 



659. In what respect are they injurious or useful ? 



660. In what months are Crabs and Lobsters good to eat ? 



661. What is the size of the Horse-shoe Fish, and where is it found? 



662. Describe it. 



663. What use is made of its eggs in the East Indies? 



664. Describe the Centipede. 



LIST OF SOME INSECTS. 



