Mr. H. Woodward on the oldest known British Crab. 153 



their contact with the syenite. This sandstone formed the great 

 mining district of the Egyptians in Sinai, and is now worked for 

 turquoises, which appear to occur more or less in veins. Raised 

 beaches were discovered by the author, on the western side of the 

 peninsula, at elevations of from 20 to 30 feet. 



2. " On anew genus of Phyllopodous Crustacea from the Moffat 

 Shales (Lower Silurian), Dumfriesshire." By Henry Woodward, 

 Esq.,F.G.S., F.Z.S. 



The fossil described consists of the disk-shaped shield, or cara- 

 pace, of an Apus-like Crustacean, the nearest known form to it being 

 Peltocaris aptychoides, Salter, from which, however, it is at once 

 distinguished by the absence of a dorsal furrow. 



A line of suture divides the wedge-shaped rostral portion of the 

 shield from the rest of the carapace, the two parts being seldom 

 found together. From their strong resemblance to Discina, the 

 author proposed for them the generic name Discinocaris, and named 

 the species Browniana, after Mr. D. J. Brown, who first drew his 

 attention to it. 



3. " On the oldest known British Crab (Protocarcinus lo?igipes, 

 Bell, MS.) from the Forest Marble of Malmesbury, Wilts." By 

 Henry Woodward, Esq., F.G.S., F.Z.S. 



The author stated that three genera and twenty-five species of 

 Brachyurous Crustacea had already been described by Prof. Reuss 

 and H. von Meyer from the Upper White Jura of Germany ; but as 

 no limbs or abdominal segments had been met with, it was more 

 doubtful where to place them than the species now described, which 

 had nearly all its limbs in situ, and a portion of the abdomen united. 

 Protocarcinus closely resembles the common spidercrabs (the Maided 

 and Leptopodidce) living on our own coasts. 



4. " On the species of the genus Eryon, Desm., from the Lias 

 and Oolite of England and Bavaria." By Henry Woodward, Esq., 

 F.G.S., F.Z.S. 



The genus Eryon of Desmarest was established for certain ex- 

 tremely broad and flat forms of Astacidce found in the Solenhofen 

 limestone near Munich, and tirst described in 1757. The late Dr. 

 Oppel has recorded fourteen species, two of which, E. Barrovensis 

 and E. (Coleia) antiquus, are from the Lias of England. Mr. Wood- 

 ward gave descriptions and figures of E. Barrovensis, M'Coy, and 

 five other species, namely, E. crassichelis, E. Wilmcotensis, and E. 

 Brodiei, from the Lower Lias ; E. Moorei, from the Upper Lias of 

 Uminster; and E. Oppeli, from the Lithographic stone of Solen- 

 hofen. 



5. " Notes relating to the Discovery of Primordial Fossils in the 

 Lingula-flags in the neighbourhood of Tyddynglwadis Silver- lead- 

 Mine." By J. Plant, Esq., F.G.S. 



The discoveries described in this paper included the finding of 

 Paradoxides near the second adit of the Tyddynglwadis mine, in the 

 Lower Lingula-beds, and subsequently of further specimens in the 

 neighbourhood, associated with fragments of Anopolenus and Theca. 

 A detailed examination of the district, undertaken by the author and 



