Royal Microscopical Society. 
o 
III. — Remarks on the Homological Position of the Members 
constituting the THECATED SECTION of the CLASS 
ROTATORIA. By Charles Cubitt, F.R.M.S. 
( Taken as read before the Royal Microscopical Society, Jan 5, 187l\) 
Plates XXIII. and XXIY. 
By Thecated I mean all those animals that are invested in a 
Theca or sheath, which, whether organically attached to the animals 
or not, forms no part of the general integument of the body which 
will be denominated the corinum. These Forms, moreover, are all 
supported on a pedicle, or footstalk, by means of which they attach 
themselves permanently to some support or basis, either individually 
or in clusters. 
In a somewhat hurried epitome communicated to the * Monthly 
Microscopical Journal’ in October last, I confined myself to a 
cursory review of the homologies of two species, the first, a Form 
that I had inadvertently placed in the Genus Floscularia as Flos- 
cularia coronetta ; and the second, Limnias annulatus, a rare 
species, which I in that communication called Melicerta annulatus ; 
and finding that certain objections have been raised to the temerity 
of associating Melicerta, Limnias, Tubicolaria, and (Ecistes in one 
Genus ; Lacinularia, Megalotrocha, and Conochilus in another Genus ; 
and placing these two Genera in the same Family while constitut- 
ing a Family for the reception of Stephanoceros and Floscularia; I 
feel it incumbent on me to extend these remarks somewhat further 
in support of the views I had so briefly set forth ; for having since 
that date been closely occupied in the collection of materials for a 
Memoir of the THECATEI) SECTION of the CLASS ROTA- 
TORIA, which I trust at no distant period to submit to the review 
of my brother mic-roscopists, I have had ample opportunities for 
confirming the views I had so briefly set forth ; and in this short 
review it will be necessary to confine my remarks to a consideration 
of their Dermal and Alimentary Systems. 
I find myself following the steps of Mr. Gosse, who in the vear 
1851 published a consistent classification for the CLASS ROTA- 
TORIA in the ‘Annals and Magazine of Natural History,’ in which 
he subdivided these particular Forms which I define by the term 
THECATED, precisely as I find them work out on a careful 
consideration of their anatomical details. Mr. Henry Davis was 
fully aware of this when he described and so carefully delineated two 
new species, although he felt dissatisfied with the position in which 
he provisionally placed them ; still, accepting the Ehrenbergian 
notion, the one which he denominated (Ecistes intermedins should 
have been Limnias intermedins. 
This SECTION divides itself into two Families — Floscularia. 
