166 Geological Society. 



a gold-bearing horizontal quartz-vein (the " barrels " of the miners) 

 lying on the schist and overlain by quartzite and gravel. By the 

 neighbouring railway-sections the chlorite-schist is seen to alternate 

 in broad bands with quartzite, and to be associated with granite. 

 The author thinks there is reason to believe that the quartzite may 

 be of Lower Silurian age. 



3. " On some Fossil Crustacea from the Coal-measures and De- 

 vonian Hocks of New Brunswick, Nova Scotia, and Cape Breton." 

 By J. W. Salter, Esq., F.G.S., of the Geol. Surv. Great Britain. 



One of the Devonian fossils is apparently allied to the Stomapods, 

 and is named Amphipeltis paradoxus by Mr. Salter; it was/obtained 

 by Dr. Dawson near St. John's, where it occurred with plant-remains ; 

 another Crustacean fossil from the same locality is a new Eury- 

 pterus, E. pulicaris. Other remains of Eurypteri have been sent also 

 by Dr. Dawson, from the Coal-measures of Port Hood and the. 

 Joggins ; and with these a new Amphipod, Diplostylus, having 

 some characters of alliance with Typhis and Brachyocelus. 



4. " On some Species of Eurypterus and allied forms." By 

 J. "W. Salter, Esq., F.G.S., &c. 



After alluding to the late and complete researches on Eurypterus 

 by Dr. Wieskowski and Professor J. Hall, Mr. Salter explained 

 some formerly obscure points in its structure, and proceeded to de- 

 scribe the E. Scouleri, Hibbert, from the Carboniferous limestone of 

 Scotland, and the Upper Old Red Sandstone of Kilkenny ; the E. 

 (Arthropleura) mammatus, sp. nov., from the Upper Coal-measures 

 near Manchester ; and E. ? (Arthropleura ?) ferox, sp. nov., from the 

 Coal-measures of North Staffordshire. 



5. " On Peltocaris, a new genus of Silurian Crustacea. " By J. W. 

 Salter, Esq., F.G.S., &c. 



Of this form an imperfect individual, from the anthracite-shales 

 (Llandeilo flags) of Dumfriesshire, was formerly described by the 

 author as Dithyrocaris ? aptychoides. Better specimens enabled him ' 

 to distinguish it as a new generic form belonging to the Phyllopods, 

 not far removed from Hymenocaris and Dithyrocaris. A fragment of 

 another larger form, from the same locality, is described by the author 

 as Peltocaris ? Harknessi. Mr. Salter also explained his views of 

 the relationship of the palaeozoic Phyllopoda, among themselves and 

 with the recent forms, and illustrated them by a diagram in which 

 they were arranged in chronological succession. 



6. " On a Crustacean Track in the Llandeilo Flags of Chirbur} r , 

 Shropshire." By J. W. Salter, Esq., F.G.S., &c. 



This track consists of numerous, short, narrow, oblique, chisel- 

 shaped imprints, on the ripple-ridges of the slab ; and, according to 

 the author, it must have been caused by a small Crustacean with a bifid 

 telson or prong-like tail. To a like agency Mr. Salter refers similar 

 markings described by M. Brebisson as occurring in the Lower Silu- 

 rian sandstone of Noron in the Falaise (Normandy). 



