94 



liLi'OiiT -18H4. 



genus, of course. Leii|L,'t,li (us \t is) 2o mm., width 12 mm. This fossil 

 was colloctod by !Mr. iMiivi', F.d.S., at Lonu; Sh-ddalc in a (Iraptolitic 

 niudstono of the Conistoii scrioH, and has buou thought to bo such as 

 Salter intended for his 1*. auutina. 



3. I'dtocarifi, sp. 



In the llritisli JIuseum, two specimens of a small PcUncarla in tlio 

 Mofl'at Anthracitic shalo from Wustliopo Burn, at St. Mary's Loch, shows 

 an obovate outline, broad and round anteriorly (when perfect), narrowed 

 and pointed behind ; almost cordate. A portion of tlie front phito 

 remains in tlio scmioval notch of one of the specimens. Longtli probably 

 14 ram., width 10 mm. 



4. reltocuris, sp. 



In shape much like AptijrJioj)8is No. 8, i)age 18 ; small, oblate or 

 transversely oval, but with a very wide ncniicirciilar notch. In the 

 British Museum ; from the Moffat anthracitic shale of Belcraig, Annan- 

 dale (either the Birkhill or Hartfell serics= Lower Llandovery, or 

 Caradoc-Bala). Length fore and aft (shortened by pressure) probably 

 mm. ; transver.so (rather increased) 13 mm. 



In the Cambridge Museum is a similar but still smaller I'eltocaris, 

 shortened and widened by the mudstone having been squeezed horizon- 

 tally. Fore and aft diameter probably G mm., transver.so (increased by 

 squeeze) i> mm. Collected by Mr. Marr, F.G.S., in the Coniston 

 Mudstone at Skelgill Beck, near Ambleside. 



5. Peltucitriii? HarLucssi, Salter, 18G3. 'Quart. Jour. Geol. Soc.* 

 vol. xix. p. 89, fig. 2 (woodcut). 



Shape indeterminate ; it may be a piece of any large species, and the 

 author was uncertain as to its alliance. Anthracite beds (of Llandcilo 

 age), Dumfriesshire. 



No Goniatites have beeti found with any of these. 



i 



XII. PiNNOCAKTS, 11. Ethcridge, .Tun., 1878. 'Proc. 11. Phys. Soc. 

 Edinb.' vol. iv. 1878, p. 1G7 ; Nicholson &, Etheridge, Juu., ' Fossils 

 of the Girvan District ' (1880), p. 207. 



Carapace bent and probably sutured along the back. Lateral pieces, 

 found apart, in outline like the valves of a rinna ; dorsal margin straight ; 

 front edge rounded (in some cases semicircular, in others clliptically 

 rounded) ; ventral margin sinuous, fully convex anteriorly, sloping and 

 sometimes partly concave posteriorly. Concentrically striate, with 

 delicate lines following the contour of the margin and centering on a 

 kind of umbo situate at about a third of the length of the valve from its 

 front edge. 



