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BRITISH PALAEOZOIC PHYLLOCARIDA. 



3. Peltocaris patula, sp. nov. Plate XVI, figs. 10 and 11. 



Peltocakis, sp. nov., T. B. J. and H. W. Geol. Mag., 1884, p. 355. 



— — — Report Brit. Assoc. for 1884 (1885), 



pp. 76 and 94. 



— sp., Woods. Catal. Type Foss. Cambridge, 1891, p. 136. 



Two small oblate shields, with the oval notch of Peltocaris, differ from any of 

 the foregoing species of this genus. In their broad, transversely oval, or elliptical 

 outline they resemble Aptychopsis oblata, PI. XV, figs. 21 and 23. Their propor- 

 tion of width to length is about 7 mm. to 5 mm. 



PI. XVI, fig. 10. Valves, delicate pyritous films, slightly broken by pressure 

 and somewhat widened. In black graptolitic shale of the Moffat (Birkhill) series, 

 from Belcraig, 1 Annandale. Coll. Lapworth. Brit. Mus. No. 59620. 



PI. XVI, fig. 11. Pyritous films of the valves of a small oblate test, similar to 

 the above, but finely crumpled, separated, and somewhat widened by cross- 

 pressure at right angles to the dorsal axis of the shield. In black graptolitic 

 shale or mudstone from Skelgill Beck, near Ambleside, Westmoreland. Coll. J. 

 E. Marr. Woodwardian Museum, Cambridge. 



4. Peltocaris Carruthersii, sp. nov. Plate XVII, fig. 7. 



Peltocakis aptychoides, H. Woodward. Quart. Journ. Geol. Soc., vol. xxii, 



1866, p. 504, pi. xxv, fig. 6. 



— — Lapivorth and Sivanston. Proceed. Belfast Nat. Field 



Club, Appendix, 1877, Table, pi. vii, fig. 24 b 

 (fig. 24 a is apparently a broken Discinocaris, not a 

 Peltocaris). 



— — Dairon. Trans. Glasgow Geol. Soc, vol. vii, 1883, 



p. 181, pi. vii, fig. 29. 



This was noticed in 1866 by Dr. H. Woodward among the fossils from the 

 Moffat shales in Mr. Carruthers' cabinet, but it has been unfortunately mislaid. 

 It differs from Salter's type by its bluntly oval shape and its strong concentric 

 striation. The figure (magnified three times) given of this form in 1866 is about 

 12 mm. long and 10 mm. wide, with the notch 4 mm. deep and 3 mm. wide. It 

 is somewhat like Ajjtychopsis Lapworthi, but has a rounded notch. The illustration 

 given in 1866 being trustworthy, we propose to treat this as a distinct species, and 



1 See ' Quart. Journ. Geol. Soc.,' vol. xxxiv, p. 284. 



