192 



NATURAL HISTORY 



ORDO I. NUDA. 

 B. Oculis duobus. 



a. Frontalibus (ante organa ro- 



tatoria). 



1 . Cauda ter furcata. 

 Rotifer, vide 396. 



tardigradus. 



macrurus. 



2. Caudae quinque apicibus. 

 AcTiNLRUS neptunius. 



b, Dorsalibus (pone org. rot.) 



1. Cauda simpliciter furcata. 

 MoNOLABis conica. 



2. Cauda ter furcata. 

 Philodina, vide 397. 



• aculeata. 



citrina. 



ORDO II. LORICATA, 

 B. Oculo unico. 



a. Cauda nulla. 

 Anurjea palea. 



b. Cauda furcata, 

 Brachionus, ixide 431. 



c. Oculis duobus. 

 Pterodina, vide 419. 



REMARKS UPON BOOK III. 



(*) PHYTOZOA.— This term was first made use of 

 by Goldfuss, and is confined, in the preceding Table of 

 Dr. Ehrenberg, to those microscopic creatures whose di- 

 gestive organs are polygastric, or, if they possess a 

 simple alimentary canal, it is always accompanied by 

 rotatory organs ; hence the eels in paste (see 125), and 

 some other of the Infusoria not having the latter organs, 

 are rejected. 



They are divided into two orders, distinguishable by 

 the covering of their bodies ; the one having a mem- 

 braneous envelope, called nuda ; the other, a delicate 

 horny or shell-like coat, termed loricata. In the Table 

 it will be observed there are none of the latter order 

 until we arrive at the Pseudopodia, Dr. Ehrenberg not 

 having admitted any but those whose alimentary struc- 

 ture he had demonstrated, although it would appear, fi'om 



