TJte Lower Devonian Fauna of Torquay. 275 



directly longitudinal (not oblique) on the anterior side of the beak." 

 No mention was made of the teeth, and the identification of this 

 shell with Sowerby's species is extremely doubtful, while its 

 reference to Cucidlcea or Niicula sens. str. is certainly incorrect. 

 The genus Nuculites Conrad (= Cucullella auctt.)^ might well 

 receive it, but it seems desirable to use the name Cleidopkorus Hall 

 in a subgeneric sense, in the manner suggested by Williams and 

 Breger ^ for those species of Nuculites of the type of Nuculites 

 planulata Conr. in which the surface is smoothly oval without any 

 trace of a definite posturabonal ridge ; and to this group our Mead- 

 foot shell undoubtedly belongs. CI. perovalis Williams and Breger ^ 

 from the Chapman Sandstone of Maine bears a considerable 

 resemblance to it in shape and outline, and N. {CI.) ellij)ticus (Maurer) 

 of the Coblenzian (as described by Beushausen ^ under the generic 

 name Cucullella) is another allied species. 



EXPLANATION OF PLATE XII. 



FIG. 



\. Actinodesma (Glyptodesma) suberectum sp. nov. Left valve of complete 

 internal cast. Nat. size. Meadfoot Beds, Kilmorie (Sedgwick 

 Museum, Cambridge, S. 64). 



la. Ditto. Right valve of same specimen. Nat. size. 



lb. Ditto. Anterior view of conjoint valves of same specimen. Nat. size. 



2. Goniophora kilmorip.nsis sp. nov. Right valve of complete internal cast. 

 Nat. size. Meadfoot Beds, Kilmorie (Sedgwick Museum, Cambridge, 

 S. 68). 



2a. Ditto. Cardinal view of conjoint valves of same specimen. Nat. size. 



26. Ditto. Anterior end (broken) of same specimen, showing triangular cross- 

 section. Nat. size. 



2c. Ditto. Impression of external surface of left valve (imperfect) of same 

 specimen, showing ornamentation. Nat. size. 



1 Kegel, Abh. k. prr.us-<<. gcol. Landesanst., N.F., Heft Ixxvi, 1913, p. 73. 



2 Williams and Breger, Prof. Paper 89, U.S. Geol. Surv., 1916, pp. 159, 160. 



3 Ibid., p. 151, pi. XXV, figs. 2, 10. 



* Beushausen, Abh. k. preuss, geol. TMndesanst., N.F., Heft xvii, p. 104, 

 pi. V, figs. 9-15. 



[To be continued.) 



