366 T. Davidson — Tertiary Brachiopoda. 



Upper Miocene of Palazzo and St. Lorenzo, near Siena. The same 

 distinguished palaeontologist informs me that he likewise obtained 

 T. sinuosa in the Pliocene near Siena, and at the Grotta Eondinaya 

 (Val d'Elsa), in Tuscany. Brocchi quotes it from the Piacentino, 

 and it occurs in the same formation in Calabria and in Sicily, but 

 has not hitherto been discovered in the recent condition. 



3. Terehratula Roncionii (Meneghini, M.S.), PI. XIX., Fig. 4. Ovate 

 and biplicated only near the frontal margin, valves almost equally 

 deep, surface smooth ; length 10, width 8, depth 5 lines. 



Sig. Meneghini found this shell in blue sub-Apennine clays 

 (Pliocene) at Eoncione (Hills of Pisa), but is uncertain whether it 

 should be described as new. The shell is very remarkable on 

 acount of the size and arrangement of its punctures. Its interior is 

 not known. 



4. Terehratula Usinuata (Lamarck ?) PI. XVII., Fig. 1, 2. Lamarck. 

 Histoire Nat. des Animaux sans vertebres, vol. vi., p. 252, 1819. 



Several specimens found by Sig. Meneghini in the Eocene or 

 Nummulitic Limestone at Bolca, in the Veronese territory, have been 

 referred by him to Lamarck's species. I have compared these shells 

 with a large series of specimens of T. hisinuata from Parnes, near 

 Paris, and have observed that in the French examples the biplication 

 is usually less strongly defined than in those from Italy. I cannot, 

 however, help noting how nearly some of these Bolca shells agree 

 with similar sized specimens of T. sinuosa. 



5. Terehratula hiplicataeformis (Schauroth), PI. XVII., Fig. 9. Ver- 

 zeichniss der Versteinerungen im Herzogl-Naturalien Cabinet zu 

 Coburg, p. 165, pi. v., fig. 3, 1865. 



I know nothing of this species further than the description and 

 figures published by Schauroth. It appears to be slightly biplicated 

 in front, and is, consequently quite distinct from the Ter. Fumanensis 

 of Meneghini ; along with it is found a large variety of Rh. polymor- 

 pha =7". contorta (Schaffh.). It occurs in the lowest stage of the 

 Eocene series at Novala, or rather at the Zovo di Castelvecchio, near 

 Valdagno. 



6. Terehratula Fumanensis (Meneghini), M.S, PI. XVII., Fig. 6, 7, 8. 

 Shell oval, longer than wide, broadest about the middle, ventral 

 valve much more convex and deep than the opposite one ; beak in- 

 curved and truncated by a circular foramen ; dorsal valve slightly 

 convex, flattened, and sometimes gently depressed towards the front. 

 Surface smooth, marked by concentric lines of growth. Interior not 

 known. Length 12, width 11, depth 7 lines. 



This species is remarkable on account of its oval shape and small 

 convexity of its dorsal valve. It occurs abundantly along with 

 Rh. polymorpha, in a compact rose-coloured Nummulitic or Eocenic 

 Limestone at Fumane, in the Veronese territory, also at Monte 

 Spilecco near Bolca, the Zovo di Castelvecchio, Campo Tamaso, etc. 

 This rock being about the oldest Tertiary deposit in the North of 

 Italy. 



7. Terehratula vitrea (Born), PI. XVII., Fig. 11. This well-known 

 species made its first appearance during the Miocene period, if it 



