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lava from the ancient system of volcanos in the Katakekaumene, 
and was subsequent to the formation of the present valleys, as 
many of the lava streams may be traced into them. The coulées 
which flowed towards the Hermus from the crater or Karadevit near 
Koola, present an inclined plane, the surface of which is not more 
than 150 or 200 feet above the present bed of the river; but they 
must, at one period, have been under water, as the lava is covered | 
with a sediment which fills its crevices and smooths its asperities. 
The third period belongs to the more modern system of cones, 
the lava of which is as rugged and barren as the recent coulées of 
Etna and Vesuvius. Of the date of these eruptions, Mr. Hamilton 
offers no opinion, merely remarking that the craters are mentioned 
by Strabo, and that there is no tradition of their activity. 
March 27.—William Harris, Esq., of Charing, Kent; Rev. Robert 
Norgrave Pemberton, of Church Stretton, Shropshire ; Rev. Alex- 
ander Thurtell, A.M., Fellow of Caius College, Cambridge ; and 
Searles Valentine Wood, Esq., of Bernard-street; were elected 
Fellows of this Society. p 
A paper was read by Prof. Owen, F.G.58., entitled a “‘ Description 
of a Tooth and part of the Skeleton of the Glyptodon, a large qua- 
druped of the Edentate order, to which belongs the tessellated bony 
armour figured by Mr. Clift in his memoir on the remains of the 
Megatherium, brought to England by Sir Woodbine Parish, F.G.S.”’ 
The first notice of the remains of a fossil large edentate Mammal 
associated with a tessellated bony armour, is an extract from a letter 
addressed by Don Damario Larranaga, Curé of Monte Video, to 
M. Auguste St. Hilaire, and appended to Cuvier’s account of the 
Megatherium in the Ossemens Fossiles, t.v.p.179.(1823). The bones 
were discovered near the surface in alluvium, in the Rio del Sauce, - 
a branch of the Saulis grande, and consisted of a femur 6 to 8 
inches in width, but short, and in every respect like the femur of an 
Armadillo; also a portion of a tessellated bony armour. The tail is 
described as very short and very stout, and to have had a bony 
armour, which was not verticellate or disposed in rings. Similar 
fossils are said to occur in analogous strata near the lake Mirine, on 
the frontier of the Portuguese colonies. ‘The notion that the remains 
found in the Rio del Sauce belonged to the Megatherium, rests solely 
on the circumstance of Don Damario Larranaga having inserted the 
word Megatherium as the synonym of his gigantic fossil ‘‘ Dasypus.” 
Je ne vous écris point sur mon Dasypus, (Megatherium, Cuvier.) 
The next observations bearing upon the present subject are con- 
tained in Weiss’s Geological Memoir on the provinces of San Pedro 
do Sul, and the Banda Oriental, (Berlin Trans., 1827). These re- 
mains consisted of part of a femur of a Megatherium, without any 
associated armour, found at a deserted Indian camp near the Queguay, 
a tributary of the Uruguay ; of portions of osseous tessellated armour, 
apparently unaccompanied by bones, discovered on the Arapey chico, 
in the province of Monte Video; and of bones of the extremities 
and fragments of armour found near the Rio Janeiro. The whole of 
