JURASSIC AND TRTASSIC BRACHIOPODA. 183 



at Eye near Peterborough. There is a specimen in the York Museum from the Oxford 

 Clay of Scarborough Castle Hill j it was part of the Bean Collection : it has a MS. name 

 Terebratula lavigata, Bean. 



170. Waldheimia Leckenbyi, Walker, MS. Dav., Ool. Mon., Appendix to Vol. I, 



PI. A, fig. 19 ; Sup., PI. XXIII, figs. 

 1—4. 



Terebratula pentahedra, S. Woodward (not of Miinster). Gray's " Cat. of Mollusca 



in British Museum, Brachiopoda," p. 73, 1853. 

 — submaxillata ?, Dav. (not of Morris). Ool. Mon. Appendix, vol. i, 



pi. a, fig. 19, 1855. 



Shell subpentagonal, longer than wide, broadest posteriorly ; sides converging, and 

 almost straight anteriorly ; front-line short, nearly straight ; dorsal valve very slightly 

 convex, almost flat, with (in adult individuals) a narrow, shallow, longitudinal depression 

 along the middle. Ventral valve convex, much deeper than the opposite one, longitu- 

 dinally keeled along the middle ; beak moderately incurved, and truncated by a rather 

 small circular foramen completed by two small deltidial plates ; beak-ridges sharply 

 defined. Surface smooth, marked at intervals by concentric lines of growth. Loop 

 long. Proportions variable. A large example measured — 

 Length 18, breadth 16, depth 9 lines. 



Obs. — This well-marked species had been referred by mistake to T. pentahedra, 

 Miinster. T. pentahedra is, however, a small species occurring in the Coral Rag of 

 Saxony and Bavaria, and differing materially from the species under description. It 

 occurs abundantly in the Inferior Oolite of Leckhampton Hill, near Cheltenham, also in 

 the same formation at Stroud. This species has been named by Mr. J. F. Walker after 

 his friend the late Mr. Leckenby, of Scarborough. 



171. Waldheimia (?) humeralis, Romer. Dav., Sup., PI. XXIV, figs. 18, 19. 



Terebratula humeralis, Romer. Petref. der N.-Dcutsch. Oolith., Nachtrag, p. 21, 



pi. xviii, fig. 14, 1839. 



— pentagonalis, Bronn. In Mandelsloh ; Bronn's Neues Jahrbuch fiir 



Min., &c, p. 568, 1841. 



— humeralis, Thurmann et Etallon. Lethsea Bruntrutana, p. 284, pi. xli, 



fig. 4, 1862. 



— — Rigaux. Notice Stratigraphique sur le Bas Boulonnais, 



1863. 

 Waldheimia — Schloenbach. Brachiopoden der Norddeutschen Cenoman- 



Bildungen, p. 37, 1867. 



