﻿JURASSIC AND TRIASSIC BRACHIOPODA. 



119 



Subgenus Suessia, E. Desl. 

 76. Suessia imbricata, E. Desl. 



Suessia imbricata, E. Desl. Annuaire de l'lnstitut des Provinces de France, 1855. 

 — — C. Moore. Proceedings of the Somersetshire Archaeological and 



Nat. Hist. Soc. for 1865-6. 



This species is stated by Mr. C. Moore to occur in the Middle Lias of Whatley ; but 

 as he did not describe the species, and has mislaid the specimens, I can only repeat his 

 statement. 



Genus Terebratula, Llhwyd. 

 77. Terebratula (?) Suessi, E. Desl Sup., PI. XIV, figs. 4, 5, 6. 



Argiope Suessi, E. Desl. Annuaire de l'lnstitut des Provinces pour 1853. 



— (?) — — Id., for 1854, p. 15, pi. i, figs. 1 and 2. 



— — Oppel. Die Jura-Formation, p. 263, pi. lxxxii, 1856. 



— — Suess. Classif. der Brach. von Th. Davidson, p. 58, pi. ii, figs. 



4 a, b, c, 1856. 



Megerlia — E. Desl. Memoires de la Soc. Linn, de Normandie, t. x, pi. xlv, des 



Comptes Rendus, 1856. 

 Terebratula (Megerlia) Suessi, E. Desl. Pal. Franc. Brachiopodes, Jurassiques, 



p. 150, pi. xxxvi, figs. 1—6, 1863. 

 Argiope (?) Suessi, C. Moore. Quarterly Journal Geol. Soc, vol. xxiii, p. 4/9, 1867. 

 Megerlia — R. Tate. Geol. Mag., vol. vi, p. 551, 1869. 



Spec. Char. — Shell small, transverse, spindle-shaped, or transversely and obscurely 

 pentagonal ; hinge-line straight ; lateral extremities elongated and acutely acuminated. 

 Both valves moderately and evenly convex, without fold or sinus ; ventral valve rather 

 the deepest. Beak of ventral valve, slightly incurved, area triangular, large and wide, 

 foramen large, commencing under the extremity of the angular beak and laterally 

 margined by a narrow plate. Hinge-area in dorsal valve narrow and divided in the 

 middle by an obtuse v-shaped notch, which corresponds with the foraminal aperture in 

 the area of the opposite valve. Surface of valves ornamented with from ten to thirteen 

 rounded imbricated ribs, with interspaces between them of about equal breadth. In the 



