282 Rev. A. M. Norman on the Genus Haliphysema. 
parallel among the arenaceous Foraminifera, while it is emi- 
nently characteristic of Haliphysema. Marszpella is described 
as unattached and open on the aboral extremity ; for such is 
the condition of the specimens which I have seen; but it is 
possible that when living it may be attached hy the base, 
since, if this were the case, it is hardly likely that such a little 
organism would maintain its attachment atter the rough 
treatment of being dredged and drawn up through two miles 
of water. 
Though these two forms appear to have so much in com- 
mon with Haliphysema as regards external features, yet the 
deep Atlantic dredgings of the ‘ Porcupine’ and ‘ Valorous’ 
have brought to light such a remarkable assemblage of arena- 
ceous Foraminifera, most of which are still undescribed, that 
it appears impossible to say where the line of demarcation is 
to be drawn between Technitella and Marsipella and such 
genera as Trochammina and Lituola, Future investigation 
can alone settle this point. Meanwhile I describe them here 
as appearing to me more nearly related to Haliphysema, 
though still I leave them as genera incerte sedis. 
POSTSCRIPT. 
The foregoing paper was sent to the Editors of the ‘Annals’ 
at the end of January. Mr. Carter’s notes in the February 
number call for one or two additional observations. 
Mr. Carter makes the following remarkable declaration :— 
‘‘ Whether there be collared flagellated monadic bodies in 
Squamulina scopula or not, the polythalamous character, so 
appropriately given by the illustrious Ehrenberg to what we 
now call Foraminifera, decides the question with those who 
are well acquainted with the structure of the latter as well as 
that of the Spongida. No sponge, that I know of, presents 
the polythalamous character of Sguamulina scopula, in its 
foot (root) or anywhere else.” 
I must decline to acquiesce in such a statement. 
First. Because I deny that there is any “ polythalamous ” 
character in the base of Haliphysema ; and I believe that this 
is the first time that Mr. Carter has made such a statement. 
He has before always correctly spoken of this dome-shaped 
base of attachment as internally “parteally divided,” “‘pseudo- 
septal,” ‘sub-polythalamous.” ‘There really is but a single 
chamber, with recesses at the sides formed by the 5-7 radii, 
which, originating at the margin, stretch thence “ toward the 
centre, which they seldom, if ever, reach.” ‘T'o compare great 
things with small, the single-chambered dome of the Reading- 
