﻿ss 



BRITISH DEVONIAN BRACHIOPODA. 



Terebratulye mtnutissime striata, Schroter. Abb. Naturg., pi. iv, fig. 24, 



1777. 



Anomia terebratulites striatulus, Schlotheim. Min. Taschenbuch, viii, pi. i, fig. 



6, 1813. 



Hy sterolites vulvarius, Schloth. Petrefactenkunde, p. 247, 1820. 

 Terebratulites striatulus, Schloth. Nachtrage zu Petrefactenkunde, pi. xv, fig. 



4, 1822. 



— excisus. Ibid., fig. 3. 



Terebratula hysterolitha, Hon. Ibid., p. 231, 1830. 

 Spirifer striatulus, v. Buch. Uber Deltkyris und Ortbis, &c, p. 231, 1837. 



— connivens, Be Vern. Bull. Soc. Geol. de France, vol. xi, p. 255, 1840. 

 Atrypa striatula, Sow. Trans. Geol. Soc, 2nd ser., vol. v, pi. liv, fig. 10, 1840. 

 Orthis connivens, B'lrchiac et Be Vern. Trans. Geol. Soc, 2nd ser., vol. vi, 

 p. 371, 1841. 



— striatula, Be Kon. Anim. Carb. Belg., pi. xii, bis., fig. 6, 1844. 

 Spirifer striatulus, F. Roemer. Rbeinish Uebergansgsgeb., p. 73, pi. i, fig. 4, 1844. 

 Orthis resupinata, var. striatula, Be Verneuil et Be Key. Geol. of Russia and 



the Ural Mountains, pi. xii, fig. 6, 1845. 



— striatula, Be Verneuil. Bull. Soc. Geol. France, 2nd ser., vol. iv, 1847. 



— resupinata, Bronn. Index Palseontologicus, p. 858, 1848. 



— striatula, B'Orb. Prodrome, vol. i, p. 90, 1849. 



— — Be Vern. Bull. Soc. Geol. France, 2nd ser., vol. vii, 1850. 

 Hysteriolithes vulvarius, Quenstedt. Handb. der Petrefact., p. 484, pi. xxxix, 



fig. 2, 1851. 



Orthis striatula, Schnur, in Dunker und v. Meyer's Palseontographica, vol. iii, p. 

 215, pi. xxxviii, fig. 1, 1853. 



— — Steininger. Geol. Bescbreibung der Eifel, p. 81, 1853. 



— — Bav. British Foss. Brack. Introduction, vol. i, pi. vii, fig. 128 — 



133, 1855. 



— resupinata, Phillips. Pal. Foss. of Cornwall, Devon, and West Somerset, 



p. 67, pi. xxvii, fig. 1 15, 1841. 



— — Morris. Catalogue of British Fossils, p. 141, 1854. 



— striatula, Woodward. Manual of the Mollusca, p. 229, fig. 147, 1854. 



— — Sandberger. Die Brach. Rheinischen Schichtensystems in Nassau, 



p. 39, pi. xxxiv, fig. 4, 1855. 



Spec. Char. Shell variable, usually transversely oval or elliptical, but at times the 

 length is equal to, or slightly exceeds, the width ; hinge-line straight, much shorter than 

 the width of the shell ; dorsal valve deeper than the ventral one, uniformly convex, most 

 prominent and even gibbous at and near the beak, which is more or less incurved, while 

 the half of the valve towards the front is either evenly convex or slightly depressed ; area 

 narrow ; ventral valve moderately convex, with a wide depression or sinus at and near the 

 front ; beak either inconspicuous or but slightly incurved ; area triangular, with an open 

 fissure in the middle ; the frontal margin presents a convex curve, while that of the dorsal 

 one is concave. The beaks of both valves are at times so much incurved as to almost 



