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SUPPLEMENT TO THE BRITISH 



Rottorf, north of Helmstedt, which have been determined by Romer as his T. sub-ovoides. 

 The Rottorf beds are identical with the lower beds of the Belemniten-Lias of Kahlefeld 

 (see Romer) and Markoldendorf (as well as Warburg, south of the Teutoburg Wald). 

 At p. 154 of his " Brachiopodes jurassiques Mr. E. Deslongchamps describes and 

 figures what he believes to be T. sub-ovoides (Romer), and as totally distinct from 

 T. punctata. In 1876, however, at my request he made a further examination of the 

 specimens sent him some years back by the late U. Schloenbach, and is now quite ready 

 to admit that T. sub-ovoides is merely a synonym of T. punctata. Dr. Schloenbach had 

 also changed his views on the same subject, and in the ' Journ. of the German Geol. 

 Soc.,' Berlin, 1863, states that T. sub-ovoides, Rom., is identical with T. punctata, Sow. 

 He subsequently proposed to M. Deslongchamps that a fresh name should be 

 given to the species described and figured in the ' Pal. Eranc^,' as T. sub-ovoides. 

 We find also in the Upper Lias of Havesfield Beacon another form which Messrs. 

 Etheridge and Walker thought might be a variety of T. trilineata ; but as many of the 

 smaller specimens are quite identical in shape and character with T. punctata, we have 

 at any rate preferred to leave them provisionally under that group. It appears as if it 

 were a connecting form between Ter. trilineata and T. punctata. Some elongated 

 examples of Young and Bird's species can scarcely be distinguished from certain forms 

 of T. punctata; these ovate shells are all very nearly allied, and it is difficult to 

 define by words the small differences by which they can be distinguished. Perhaps it 

 may be convenient to arrange the British forms allied to T. punctata somewhat in the 

 following manner. 



92. Terebratula punctata, Sow. Dav., Ool. Mon., p. 45, PI. VI, fig. 1 — 10, 12 and 



16 (?); Sup., PL XVI, figs. 6—8, 11, 12, and 

 var. 9, 10 ? 



Tekebratula punctata, Sow. Min. Con., vol. i, p. 46, tab. 15, fig. 4, 1812. 



— sub-ovoides, Romer. Ool.-Geb., pi. ii, fig. 9, 1836. 

 _ _ Oppel. Mittl. Lias, t. iv, fig. 1, 1836. 



— sub -punctata, Dav. Ool. Mon., p. 46, pi. vi, figs. 8 to 10 and 12 



(non 7), 1851. 



— punctata, E. Desl. Brach. Jurassiques, p. 160, pi. xii, fig. 3, pi. xl, 



figs. 1—9, pi. xli, figs. 1, 2, 1863. 



— punctata et sub-ovoides, D. Brauns. Untere Jura im Nordwest- 



lichen Deutschland, pp. 427 and 478, 1871 ; 

 Obere Jura, p. 393, 1871. 



The shell has been correctly described at pp. 45 and 46 of my Oolitic and Liassic 

 Monograph. Now, although the typical shape of T. punctata is a regular elongated oval, 

 many specimens are much more elongated, narrow, and almost straight or very slightly 



