FOURTH GREAT DIVISION OF THE ANIMAL 
KINGDOM. 
ANIMALIA RADIATA. 
The Rapiarep ANIMALS, ZOOPHYTA, OR ZOOPHYTES(1), 
as they are termed, include a number of beings whose organi- 
zation, always evidently more simple than that of the three 
preceding divisions, also presents a greater variety of de- 
grees than is observed in either of them, and seems to agree 
in but one point, viz. their parts are arranged round an axis 
and on one or several radii, or On one or several lines extend- 
ing from one pole to the other. Even the Entozoa or Intes- 
tinal Worms have at least two tendinous lines, or two ner- 
vous threads proceeding from a collar round the mouth, and 
several of them have four suckers situated round a probosci- 
(1) Neither of these denominations should be construed literally. There are 
some genera in this division in which the radiation is but slightly marked or even 
totally wanting, and it is only among the Polypi that we find that constancy and 
form of flowers which has caused them to receive the name of Zoophytes. These 
appellations, however, indicate our having reached the lowest part of the animal 
series, and that we have arrived at beings, most of which remind us more or less 
of the vegetable kingdom, even in their external forms—it is in this sense that I 
employ them. 
[We here return to the Baron; the portion of the work written by M. Latreille, 
which commenced with the Crustacea, or our third yolume, having terminated with 
the Dipterous Insects. Am. Ed.] 
