476 PEocEEDiNGS OF THE GEOLOGICAL sociETr. [June 7, 



those found in any other of the Dordogne caves, but identical with 

 those of Aurignac (Haute Garonne) and of Chatelperron (Allier). 



The discovery of this fragment of Ovibos moschatus in the Gorge 

 d'Enfer gives us the most southern spot where this species has been 

 observed*, and by it its Quaternary habitat is carried down 15° to 

 the south of its existing limit in North America, where it is known 

 that this animal is rarely found below the sixtieth degree of latitude. 



The Reindeer, whose migrations are still more extensive, was ad- 

 vanced yet further south during the Quaternary period, as I have 

 found its remains on the northern slopes of the Pyrenees. 



2. On some Additional Fossils /rom the Lingula-flags. By J. W. 



Salter, Esq., A.L.S., E.G.S. With a Note on the Genus Anopo- 



lenus ; by Henky Hicks, Esq., M.R.C.S. 

 In my last communication, of March 1864, 1 described all the fossils 

 then known from the Lower Lingiila-flags of Pembrokeshire. There 

 are now several more forms to communicate, some of which are 

 generically new, and others are new species of old and well-known 

 genera. I must confine myself in this paper to one or two species of 

 which a better knowledge has been obtained, and the description of 

 which it is desirable to amend, as the forms difi'er in some marked 

 peculiarities from any of the Trilobite-group hitherto described. 



The new genus Anopolenus (see vol. xx. p. 36) was supposed, 

 and with good reason, to be a blind Trilobite allied to Paradoocides, 

 without facial sutures or head-spines, and with truncate body-seg- 

 ments not produced into spinous appendages as in most of its con- 

 geners (see pi. xiii. of the vol. above quoted, figs. 4, 5). All this 

 was true so far as I then had materials ; but the subjoined descrip- 

 tion, by my friend Mr. Hicks, of a new species of the genus will show 

 that I then only had a part either of head or body of this curious 

 animal, which turns out to be more truly intermediate between Pa- 

 radoxides and Olenus than was before supposed, while it also presents 

 characters contradictory to those of either genus. It possesses eyes, 

 facial suture, and expanded pleurae ; but the arrangement of these 

 is abnormal, as Mr. Hicks's description will show. 



Before giving his description of them, however, I would call the 

 attention of the Society to a new fact of some importance with 

 respect to the fauna of the Lower Lingula-flags. As noticed in the 

 paper above quoted, the fossils occur in a band, but a little dis- 

 tance above the base of the Lingula-flag series, in fact only one 

 hundred feet or so from the grey Cambrian rocks. Having faith in 

 the continuity of the band, I had begged Mr. David Homfray, of Port- 

 madoc, to employ his first leisure in examining the same horizon in 

 the Ffestiniog country, a locality which had hitherto been neglected. 

 He met with his usual good success ; and found not merely the 

 same genera, but many of the species which we had discovered at 



* The supposed skull of Bos PaUasii, De Kay, from the alluvium of Missis- 

 sippi at New Madrid, has been recognized by Mr. Leidy as referable to his 

 geuus Bootherium. 



