354 BRACHIOPODA OF THE 



LOWER SILURIAN SPECIES. 



1. Species referable to the Age of the " Gres de May" or Caradoc. 



34. Lingula Morierei, Tromelin. Dav., Sil. Mon., PI. I, fig. 31 ; and B. S. Sup., PL 



XL, figs. 25, 26. 



Lingula morierei, Trom. Foss. paleozoiques (Tableau D), No. 65, 1876; and Bull. 



Soc. Linn, de Normandy, 3rd ser., vol. i, p. 55, 18/7. 



Shell marginally oval, widest and rounded anteriorly, longer than wide, moderately 

 convex. 



Length 1 inch, breadth 7 lines. 



06s. — When publishing my Silurian Monograph I had but one specimen of this 

 species to examine, and did not dare give it a specific name. Since then M. de Tromelin, 

 having also obtained a single specimen in the " Gres de May " at May, in Normandy, 

 described it under the name of Lingula Morierei. It seems distinct from the species that 

 occur in the " Armorican Sandstone." 



Mr. Vicary has since then found at Budleigh-Salterton two more examples, which 

 seem referable to the same species (figs. 25 and 26 of our plate); one of them is an 

 internal cast of the ventral valve, showing the central muscular scars. M. de Tromelin 

 states that there exists a strong longitudinal, median convexity in the posterior half of 

 the only valve with which he is acquainted, and a similar convexity occurs in the specimen 

 figured in my Silurian Monograph. 



35. Terebratula ?, sp. B. S. Sup., PI. XLI, fig. 23. 



Terebratula ? sp., Dav. Notes on the Brach. hitherto obtained from the Pebble-bed 



of Budleigh-Salterton — Quart. Journ. Geol. Soc, vol. 

 xxvi, p. 78, pi. iv, fig. 11, 1869. 



The exterior of a ventral valve only having been discovered it would not be safe to 

 give the shell a specific name. We have put it provisionally with Terebratula. It is 

 marginally longitudinally oval, tapering at the beak, widest and rounded anteriorly, 

 convex, smooth, and marked only by a few concentric lines of growth. 

 Length 8, width 4 lines. 



It bears some resemblance to the T inaqualis of Roemer (' Beitr. zu Kenntniss der 



