﻿JURASSIC AND TRIASSIC BRACHIOPODA. 



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33. Spiriferina rostrata, Schl, sp. Dav. (pars), Ool. Mon., p. 20, PL II, figs. 1 — 6 



and 13 to 21 (not figs. 7 to 12, or PI. Ill, 

 fig. 1), Sup., PL XI, fig. 6. 



Terebratulites rostratus, Schloth. Nach. zur Petref., pi. xvi, fig. 4, 1822. 

 Spirifer rostratus, Zieten. Die Versteinerungen Wiirt., p. 38, fig. 3, 1832. 

 Delthyris rostratus, Von Buck. Class, et descrip. des Delthyris (Mem. Soc. Geol. 



de France, 1st series, vol. iv, pi. x, fig. 24, 1840. 

 — rostratus, Quenst. Das Floegebirge Wurtemb., p. 186, 1843. 

 Spirifer punctatus, Buchman. Geol. of Chelt., pi. x, fig. 7, 1845. 



— rostratus, Dav. Lond. Geol. Journ., vol. i, p. 109, pi. xviii, figs. I — 10, 



1847. 



— — Bronn. Index Palseont., p. 1 181, 1849. 



— — Quenst. Handbuch des Petrefackt., p. 483, Atlas, pi. xxxviii, 



figs. 36—38, 1852. 



— — Quenstedt. Der Jura, p. 182, pi. xxii, fig. 25, 1858. 

 Spiriferina rostrata, E. Desl. Etudes critiques sur des Brachiopodes nouveaux 



ou peu connus, p. 10, pi. ii, figs. 7 — 9, 1862. 



Mr. Deslongchamps describes this species as a largish shell, with or without a sinus 

 and mesial fold : lateral portions of the shell smooth and without ribs. Beak short and 

 much incurved, area narrow, about a third of the width of the shell. He adds likewise, 

 that the spiral appendages are almost horizontal, and do not direct, themselves upwards 

 into the cavity of the beak (Sup., PI. X, fig. 6). 



Spiriferina rostrata occurs in the Lower, Middle, and Upper Lias, but is especially 

 abundant in the Middle Lias or zones of Ammonites capricornus, Am. margaritatus, and 

 Jm. spinosus. Mr. Tawney quotes the fossil from the Lower and Middle Lias in the 

 neighbourhood of Radstock. It occurs in the Middle Lias of Mull and Rassay in the 

 Hebrides. MM. Coquand and De Verneuil found it in the Middle Lias of Molina 

 de Aragon and Maranchon in Spain. It is common in Prance, and I have it from 

 Pliensbach, near Boll, in Germany, &c. 



34. Spiriferina Hartmanni, Zieten, sp. Dav., Ool. Mon., p. 22, PI. II, figs. 10 — 



12 ; and Sup., PI. XI, fig. 7. 



Spirifer Hartmanni, Zieten. Die Verst. Wiirtemberg, pi. xxxviii, fig. 1, 1838. 

 Delthyris — Quenstedt. Das Floegebirge Wurtemb. , p. 1811, 1843. 

 Spiriferina — d'Orb. Prodrome, p. 230, No. 227, 1849. 



— — E. Desl. Etudes critiques sur des Brachiopodes nouveaux ou 



peu connus, p. 13, pi. ii, figs. 10, 11, 1862. 



