Rev. G. F. Whidhorne — Devonian Fossils, Devonshire. 535 



A few rather small and obscure specimens are referable to this 

 species. The fold, though pronounced, seems similar in character 

 to Davidson's figures from Hope's Nose, and is not subangular 

 as in A. undata, Defr. A mould of the closed valves shows the 

 characteristic strong concentric ridges. 



Coblenzien of Belgium, but not in the Rhenish Lower Devonian 

 (Kayser). 



Spibifbea ourvata, Schlotheim, sp. (PL XVIII, Figs. 2, 3, 3a.) 

 1853. Spirifer curvatus, Schnur : Palaeontogr., vol.iii, p. 208, pi. xxxvi, figs. 3a, b. 



Several specimens of a very large Spirifer occur, but all in 

 a fragmentary and distorted condition. They are apparently a good 

 deal wider than long, and are entirely without ribs. The fold 

 is elevated, rounded, and very much produced in front; and the 

 sinus is deep from near the umbo, and forms a very long tongue- 

 shaped projection in the front of the ventral valve. Some specimens 

 (Fig. 3a) preserve the surface-ornament, and show it to consist of 

 fine, regular, concentric, elevated lines, bearing minute punotations, 

 which are the endings of still more minute, discontinuous, radiating 

 lineations. 



These shells seem to be like Schnur's figure quoted above and 

 Davidson's from Hope's Nose, though probably they were wider. 

 I am not inclined to follow Beushausen in regarding the very 

 variable form of the Lummaton Beds as more than a variety of 

 this species. 



Upper Coblenzien and higher beds. 



Spieifera PRiMiEVA, Steininger. 



1895. Spirifer primcevus, Beclard : Bull. Soc. Belg. Geol., vol. ix, p. 137, pi. xi, 

 figs, i-vii, 1-12. 



Several rather small casts and moulds appear to belong to this 

 species, exactly resembling S. Beaujeani, Beclard, which that 

 author afterwards merged into Steininger's shell. They are a good 

 deal wider than long, with rather rounded cardinal angles, a very 

 deep sinus, and (in the smallest specimen) five strong rounded ribs 

 on the wing. The surface is covered by very strong close-set 

 concentric ridges, becoming coarser in front, and united by strong 

 radiating lines. One specimen is 50 mm. wide. 



Throughout Lower Devonian of Europe. 



Atrypa reticularis, Linne, sp. 



This shell seems rare, being represented by a single mould. 

 Upper Coblenzien and higher beds. 



Pentamerus galeatus, Dalman, sp. (PI. XVIII, Figs. 4, 5.) 

 1853. Fentamerus galeatm, Schnur: Pakeontogr., vol. iii, p. 196, pi. xxix, fig. 2. 



Cast large, globose. Umbo large, much recurved. Area wide, 

 undefined laterally. Dorsal valve smaller than the ventral and with 

 a deep, flattened, receding sinus, a corresponding fold being on the 

 ventral valve. Shell covered with strong ribs, reaching nearly 



