BRACHIOPODA. 
281 
McChesney. None of the specimens that have been sectioned retain the bra¬ 
chial apparatus. 
The name Meganteris or Megalanteris* * * § has been adopted by various writers, 
sometimes with questionable accuracy. Megalanteris Archiaci, de Verneuil (sp.), 
the type of the genus, was described from the Devonian beds of Sabero and 
the mountains of Leon, Spain; the material upon which Suess founded his 
determination of the brachidium, seems to have been derived from the lower 
beds of the Eifel. Quenstedt has also given figures of internal casts of this 
form from Lahneck. The species Airypa inornata, d’Orbigny, from the lower 
Devonian of western France, has been referred to this genus by CEhlert,! but 
the figures given by him show a want of conformity to the generic characters 
of Megalanteris, both in the form of the hinge-plate, the muscular impressions 
and the regularity of the lateral margins. 
Kayser has suggested^ the similarity of the Terehratula amygdalina, Goldfuss, 
to Megalanteris, and CEhlert, in the work cited, refers d’Orbigny’s species, 
A. amygdala, and the A. Deshayesi, Caillaud, to the same genus, remarking their 
close similarity to A. inornata. Barrois has also described and figured § 
A. inornata and A. Deshayesi under the name Megalanteris. It has already been 
suggested that these European lower Devonian shells represent a type of 
structure different from that of M. Archiaci, which is hereinbefore designated 
as Newberria. 
Mr. Davidson figured, without name, in his British Devonian Brachiopoda 
(pi. XX, fig. 15), and subsequently (Devonian Supplement, p. 20, pi. iii, fig. 1) 
as Meganteris ? Vicaryi, the exterior of a large shell from the middle Devonian 
of Woolborough, England, having a smooth surface and inflected margins, but 
of its internal characters nothing is known. A median line on the brachial 
valve indicates the presence of an internal septum. 
* The latter word, substituting- the feminine for the masculine form of the adjective, was introduced by 
QUhlbrt, in 1887. 
t Annales des Sciences Geologiques, vol. xix, p. 20, pt. ii, figs. 1-10. 
I Zeitschr. der deutsch. geolog. Gesellsch., vol. xxiii, p. 499. 1871. 
§ Faune du Calcaire d’Erbray, p. 151, pi. x, figs. 5, 6. 1887. 
