ZOOLOGICAL CLASSIFICATION. 



Vertebrate. 



Arthropoda. 



Echinodermata. 

 X 

 Ccelelmintha. 



Tunicata. 



Mollusca. 



I 

 Polyzoa. 



i 



Himatega. 



Spongia. 

 \ 

 Coelenterata. 



Vermes. 



Gastraeada. 



The Himatega or " sac-worms " designate a supposed " stage " 

 of the animal pedigree connecting the Vertebrata with the Inver- 

 tebrata, whose now nearest relatives are the Ascidians. That the 

 ancestors of man " really existed " in the form of these Himatega 

 " is distinctly proved " by the agreement presented by the " onto- 

 geny of Amphioxus and Ascidians." 



Prof. Huxley, in a paper read before the Linnean Society at 

 the end of 1874, proposed a classification substituting " series for 

 divisions;" for, as he has since remarked, he considers the ordi- 

 nary mode of arrangement into larger divisions " is a matter of 

 altogether secondary importance." 



The following is his tabular arrangement of the animal king- 

 dom : 



"ANIMALIA. 



I. PROTOZOA. 



i. MONERA. 



Protam&bidce. Protomonadida. Myxastrida. Foraminifera. 

 ii. ENDOPLASTICA. 

 Amwbidce. Infusoria flagellata. 

 Infusoria ciliata. 



II. METAZOA. 

 A. G-ASTRE.E. 



1. POLYSTOMATA. 



Porifera (or Spongida], 



ii. MONOSTOMATA. 



1. Archseostomata. 



a. Scolecimorpha. b. Coelenterata. 



Eotifera. Turbellaria. Hydrozoa. 



Treinatoda. Actinozoa. 



Nematoidea. Hirudinea. (Ctenophora.) 



Oligocheeta. 



n 9 



Gregarinidcs. Acinetidce. 

 Eadiolaria. 



