223 
peller, and, of course, the general agreement of these fossils with 
each other. 
The figure of Dr. Capeller's fossil is useful also on another account. 
Articulated tentacula are seen passing from the inside of the fingers, 
plainly evincing that these fossils are the superior terminations, and not, 
as Mr. Lister and Mr. Beaumont supposed, the radices of encrini. The 
form of the fingers of the encrinus, figured by Dr. Capeller, so much 
accords with that of the fingers of the encrinus in Mr. Donovan^s Collec- 
tion, and which I shall next notice, as to induce me almost to think that 
Mr. Donovan’s fossil may be of the same species with those which have 
been just examined. 
One of the encrini figured by Dr. Capeller differs from the rest suffi- 
ciently, to allow it to be considered as a variety of this species ; the 
metacarpal ossiculae being so thickly and deeply radiated, as to give to 
each of them somewhat of a roselike form. 
The fossil figured Plate XVII. Fig. 12, is a small specimen, appa- 
rently of this species, which is in the British Museum. The only 
account of this fossil which I could obtain, is that which is contained 
in the label accompanying it, describing it, “ Modiolus galeatu , from 
Benbuisghen, a high mountain near Murlach M6r, in the county of 
Sligo.” 
I am at present unable to offer any opinion respecting the nature 
and form of the trochital trunk of this animal, or of its inferior extremi- 
ties. I, however, hope that, having traced it thus far, I shall learn, 
before long, that some other admirer of these subjects, resident in the 
neighbourhoods in which they are found, will have more successfully 
extended this investigation. Then, and not before, can this animal be 
designated by an appropriate name ; at present, it may be proper to term 
it, agreeable to the resemblance which it bears to the nave of a wheel, 
the Nave Encrinite. 
In the very valuable and interesting museum of Mr. Donovan is, I 
believe, an unique specimen of the remains of an encrinite, which 
seems to have been nearly intermediate, with respect to the length of 
