174 SUPPLEMENT TO THE BRITISH 



last species neither in France nor in England attains the dimensions of specimens 

 occurring in deposits of about the same age in Germany, but they nevertheless show all 

 the characters of the species. 



Brachiopoda seem to be rare both in the Elsworth Rock and its equivalent in France, 

 for I am only acquainted with the two species above recorded from this deposit. 



156. Waldheimia Waterhousi, Dav. Ool. Mon., p. 31, PI. V, figs. 12, 13. 



Terebratcla (Wald.) Waterhousi, E. Desl. Brach. Jur., p. 103, pi. xxi, 



figs. 1, 6, 1863. 



This species was described and figured by Oppel in his ' Der mittlere Lias Schwabens,' 

 p. 71, tab. iv, fig. 2, under the designation of T. subdigona. Mr. E. Deslongchamps is of 

 opinion that it may be the T. lunaris of Schubler in Zieten's ' Die Versteinerungen,' p. 59, 

 pi. xliv, fig. 4. As, however, Zieten's figure does not entirely recall the species under 

 description, I have preferred, at least provisionally, to retain the specific denomination of 

 Waterhousi, which has been so generally adopted. It is a very characteristic species of 

 the Middle Lias, and, according to Prof. R. Tate, occurs especially in the zones 

 characterised by the Am. ibex, A. capricornus, and A. spinatus. It has been found in 

 nearly all the quarries round Radstock, and also in the Middle Lias of Wellington 

 Cutting on the new line from Lincoln to Grantham. This species is the Ter. retusa of 

 Martin (' Pal. de l'lnfra-Lias de Dep. Cote d'Or, Mem. de la Soc. Geol. de France,' 

 2nd ser., vol. vii, p. 90, pi. vii, figs. 5, 6, 7, 1860). W. Waterhousi has been well 

 described and figured by Mr. E. Deslongchamps at p. 104 of his ' Brachiopodes Juras- 

 siques,' where he observes that, though at once participating in all the characters of 

 W. cornuta and W. Heyseana, it can yet be distinguished from both. It occurs in the 

 Middle Lias of Fontaine-Etoupe-Four, and in several other localities in Normandy. In 

 Germany it is abundant in Wurtemberg and Bavaria : also in the Tyrol. 



157. Waldheimia Hcghesi, 1 Walker, MS. 



Shell ovate, longer than wide, sides and front rounded, sometimes slightly pinched 

 in laterally and posteriorly. Valves nearly equally deep and regularly convex, without 

 fold or sinus ; beak much incurved, and truncated by a small circular foramen slightly 

 overlying the umbone of the opposite valve. Surface smooth. A dark line on the 

 smaller valve shows that the loop is long. Two specimens measured — 



1 The figure of W. Hughesi has been inadvertently omitted from the Plate. 



