484 Carruthers— On Caulopteris punctata, 
Cerithium constrictum, C. decoratum, C. cylindricum, and C. Rhe- 
éicum, Moore; Chiton Rheticus, Moore; Cylindrites fusiformis, 
C. ovalis, and C. oviformis, Moore; Naidita acuminata, Buckman; 
Cypris liassica, Brodie; Estheria minuta, Alberti; and Pollicipes 
theticus, Moore; figures and descriptions of most of these are to be 
found in Mr. Charles Moore’s valuable paper in the Quarterly Journal 
of the Geological Society, vol. xvii. p. 498-516, pl. 15, 16. 
II. On Cavtopreris puncTaTa, Goepp., A TREE-FERN FROM THE 
Upper GREENSAND OF SHAFTESBURY IN DORSETSHIRE. 
By Wrtiam Carrvuruers, F.L.S., of the British Museum. 
(Plate XIII.) 
(vee Upper Greensand is a marine formation. Dr. Fitton, in his 
elaborate Memoir on ‘The Strata below the Chalk’ (Geol. 
Trans., Second Series, Vol. IV.), has enumerated 60 species of 
Mollusca, 2 Annelids, 8 Echinoderms, and 2 Protozoons from the 
beds in the South of England belonging to this period. These 
numbers have been more than doubled since the publication of that 
paper. They still retain the same proportions ; but the fossils which 
Dr. Fitton characterised as ‘fish remains’ have been referred to 
9 genera, and there have been added 4 genera of Saurians. As 
might be expected, very few vegetable remains have been observed. 
Dr. Fitton records the occurrence of some impressions of leaves. 
The remains of what appear to be sea-weeds are occasionally met 
with. Specimens of fossil wood have also been found. William 
Cunnington, Esq. F.G.S., of Devizes, who has kindly, through the 
Editor, furnished me with some particulars regarding the Upper 
Greensand deposits near Shaftesbury, informs me that for forty years 
he has been collecting the fossils of these beds, and that during that 
time he has obtained about thirty specimens of woods, many of them 
certainly drift woods, as they had been attacked by lithophagous 
molluses. I have examined all the specimens of these woods con- 
tained in the collections of the British Museum, and I find that they 
are all Coniferous. Little more than this can be said. The woody 
fibres contain a single row of discs, and I have not detected any 
spiral fibres associated with them. 
With so few vegetable remains, it is thus of no small interest to 
find the stem of a Tree-fern in these beds. The specimen, of which 
a portion is figured, is in the Paleontological collection of the British 
Museum. It is a cast in sandstone, and is only a fragment, 14 
inches long by 6 inches broad ; other portions of the same trunk 
are in the collections of the Revs. T. Stanton and J. Penny. The 
stem had been floated out to sea, and been tossed about or rubbed 
till the bases of the stipes were worn off, and nothing remained 
but the woody portion marked with the scars of the stipes. The 
bed in which it was buried formed an admirable matrix around the 
specimen, which in process of time entirely disappeared, and its 
place was ultimately filled with sand, which has preserved on its 
surface the most delicate markings left in the cavity. No structure 
