276 Education through Nature 



' i . Holothuroidea (cylindrical and soft body) 



Classes of Echi- 2. Echinoidea (covered with spinous shell) 



noderms 3. Asteroidea (body star-shaped) 



b 4. Crinoidea (cup-shaped body, stalked) 



i. Ctenophora (transparent body with eight 



Classes of Ccelen- ^ rows of paddles) 



terates ' 2. Anthozoa (soft body with radiating septa) 



. 3. Hydrozoa (simple bag-like body) 



held together by 



ClassesofPonferaf 1 - 



Ii. Infusoria (covered with cuticle and cilia) 

 2. Gregarinida (a single worm-like cell) 

 3. Rhizopoda (having root-like feet) 

 4. Monera (homogeneous protoplasmic body) 



ORDERS OF MAMMALS AND SOME COMMON GENERA. 



i. Primates, great toe 



1. Man, Homo 



2. Gorilla, Troglodytes 



3. Orang-outang, Simla 



4. Gibbon, Hylobates 



5. Monkey, A teles 



2. Prosimii, arboreal, clawed Lemur, Lemur 



3. Carnivora, flesh-eaters 



