142 DEVONIAN FAUNA. 
shapes) are converging dental plates, united so as to form a wedge-shaped septum 
and chamber in the ventral valve. As this shows that they belong to the genus 
Camarophoria, I have no hesitation in regarding all these specimens as specifically 
identical. 
6. CamaropHorta cf. mEGISTANA, Le Hon, sp. 
21870. TrrEBRATULA MEGISTANA, Le Hon. Bull. Soc. Géol. Fr., ser. 2, vol. xxvii, 
p. 496, pl. xi, figs. 7, 8. 
21887. CamMARoPHORIA MEGISTANA, Tschernyschew. Mém. Com. Géol., vol. iii, 
pt. 3, p. 98, pl. ix, figs. 
9—11. 
Remarks.—Two very large specimens from Lummaton in my Collection bear 
considerable likeness to Le Hon’s species as given by T'schernyschew. They are 
very transverse shells, with a broad flattish fold, which is convex longitudinally, 
and which bears rather numerous ribs near the margin. The sides of the shell 
seem dilate and drooping. The specimens are unfortunately too obscure for 
identification or figuring. 
VI. Family.—Koninoxinip&, Davidson, 1853. 
1. Genus.—Davinsonta, Bouchard, 1849. 
1. Davipsonta VERNEOILII, Bouchard. 
1849. Davipsonta VERNEUVILII, Bouchard. Ann. Sci. Nat., ser. 3, vol. xii, p. 92, 
pl. i, figs. 2, 2 a. 
1865. — —_ Davidson. Brit. Foss. Brach., vol. iii, pt. 6, 
p. 74, pl. xi, figs. 13—16, and pl. xv, 
fig. 18. 
1885. “= VernNeEvIut, Maurer. Abhbandl. Grossh. Hessisch. Geol. Landes., 
vol. i, pt. 2, p. 189, pl. v, figs. 
11, lla. 
Remarks.—This species does not seem to have been very rare at Wolborough. 
I have observed ten or twelve specimens adhering to various shells in Mr. Vicary’s 
Collection and in the Museum of Practical Geology. 
