PRELIMINARY OBSERVATIONS. 7 
venale praebit, etc.,” is the title of a collection that Prof. Angelin arranged and offered for 
sale to subscribers. He was then astudent of the University of Lund. The specimens are 
arranged in wooden boxes with printed labels; and on the cover of the parts of Prof. Kroeyer’s 
‘Nat. Hist. Review,’ for 1838, there is published a list of the fifty species, and it was from 
this “ Museeum” that some names of Silurian species of Brachiopoda have been adopted 
by Herr G. Lindstrom. 
BK. pe Verneviz. In 1847, I took over to Paris a large series of British Upper 
Silurian Brachiopoda that I might compare them with species from other countries that 
had been collected by M. de Verneuil during his many travels. This led my eminent 
friend to examine along with myself a large number of Swedish Silurian Brachiopoda ; 
and in vol. v., 2nd series, of the ‘Bulletin de-la Société Géologique de France,’ 
p. 339—347, 1848, will be found a hist of forty-nine Swedish Silurian Brachiopoda, 
of which I figured some of the new species in pl. iv of the same work. 
In 1851, Hr. Sséerun in a geological description of the Isle of Oeland, in the 
‘Proceedings of the Royal Academy of Sciences of Stockholm,’ gives a list of eleven 
species of Brachiopoda, of which one seems new. In the published account of his travels 
through Sweden in 1858, Herr F’. Scumrnr, of St. Petersburg, mentions the names of the 
already described Swedish species. 
We now arrive at the last and certainly the most important work that has been 
hitherto published on Swedish Silurian Brachiopoda, and to which we shall often have to 
refer, namely, that by my distinguished friend Herr G. Linpstrom, viz., “ Bidrag till 
Kanne domen om Gotland Brachiopoder” published in the ‘ Proceedings of the Royal 
Acad. of Sciences,’ Stockholm, for 1860. In this memoir are described eighty-eight 
species and seven varieties, and several of the new forms are well figured in two accom- 
panying plates; but of these the author now considers his Cyrtina multisulcata to be 
Pentamerus liratus, and his Pent. rotundus to be only a variety of P. linguiferus; Stropho- 
mena antiquata, and Alrypa depressa, have since been added to the Gothland list, making 
the known forms amount to ninety species, of which the larger number are found also in 
England. In his Introduction, the author has endeavoured to establish that the Upper 
Silurian Formation of Gothland can really be divided into three groups, equivalent with 
the English Silurian groups, as had already been demonstrated in 1845 by Murchison, and 
later by Fredr. Schmidt. In his memoir, Lindstrém enumerates the Brachiopoda which 
are characteristic of each of these divisions ; for instance, Pent. ivatus in the oldest deposit, 
and so forth, as may be seen in the synoptical table appended to the paper, page 390. 
In this author’s last memoir, entitled, “Observations on the Zoantharia Rugosa,” pub- 
lished in 1865, he has endeavoured to demonstrate that neither the Silurian nor Devonian 
species of Calceola belong to the Brachiopoda. 
Prof. Lovén and Herr Walmstedt, do not appear to have published any thing on 
Swedish Brachiopoda; but Lindstrém has adopted two or three of their MS. names. 
