18 DEVONIAN FAUNA. 



3. Peimitia ? sp. Plate III, fig. 12. 



Bescrijption. — Valve very small, evenly convex, short, subovate. Dorsal border 

 straight, rather short. Anterior border narrow, bluntly subangular. Posterior 

 border semicircular, broad. Ventral border convex. 



Size. — Length '5 mm. 



Locality. — One indistinct specimen is in a slab with other Ostracods in 

 Miss Partridge's Collection from Saunton Hotel. 



Remarks. — This indistinct little fossil seems in general shape extremely like 

 Leperditia ? seneca, Hall, as given by Jones,^ but it appears to show a slight sulcus 

 in the dorsal centre followed by a slight posterior elevation, and therefore is 

 probably a species of Primitia. 



4. Peimitia doesicornis, JJlrich, sp. Plate III, fig. 13. 



1892. Leperditia doesicoenis, JJlrich. Amer. Geologist, vol. x, p. 267, pi. ix, 



figs. 24—28. 



Description. — Valve very small, flattish, short, sub-ovate. Dorsal border 

 broken by a vertical projection behind a short sulcus. Free borders convex. 



Size. — Length '5 mm. 



Locality. — One small specimen from Saunton Hotel is in Miss Partridge's 

 Collection. 



Remarks. — This specimen Professor Rupert Jones considers sufficiently near 

 to P. dorsicornis to be referred to it. It has some alliance to the accompanying, 

 P. sparsinoda (fig. 7), but that appears distinguished by the absence of a pro- 

 jecting node. 



It appears to be a passage-form into the genus JSchmina, approaching 

 JE. Byrnesi, Miller,^ but with a smaller and more vertical spine. 



1 1890, Jones, ' Quart. Jouru. Geol. Soc.,' vol. xlvi, p. 23, pi. i, figs. 1.3, 14. 



2 1890, Jones, ' Quart. Journ. G-eol. Soc.,' vol. xlvi, p. 12, pi. iii, figs. 9 — 11. 



