ORDERS. 51 
Examples. Ascaris, strongylus, lernza, (gill- 
‘Worms. ) 
2. ParencuyMaTa, destitute of internal cavi- 
ties and of mouths ; having pores for imbibing nu- 
friment. 
Examples. Fasciola (fluke) planaria, tenia, 
(tape-worm) scolex, ligula. 
XT. CLASS ACALEPHA 
IS DIVIDED INTO TWO ORDERS. 
i. Arrixata, fiwed at their bases, at pleasure, 
though not often moving far. 
Examples. Actinia (sea-anemone,) lucernaria. 
2. LiperaTa, not fived ; but swimming or float- 
ing from place to place. 
‘Examples. Medusa (sea-nettle) beres, cestrum. 
XII. CLASS POLYPI 
_ IS DIVIDED INTO TWO ORDERS. 
me Nupata, naked polyp. 
Examples. Hydra, (brachial nalypaes vorti- 
cella (flower polypus. ) 
2. Potyverra, stone-cased polypi. 
Examples. ‘Tubipora (tubipore coral,) sertu- 
laria (sea-moss,) flustra (sea-mat,) cellepora, (cel- 
lepore coral,) corallina (coralline,) antipathos (sea- 
fan,) isis (jointed coral,) madrepora (madrepore 
coral,) millepora (many-pored coral,) retepora 
(net-mesh coral,) pennatula (sea-pen,) alcyonium 
(fungus coral,) bie (sponge. ) 
