274 Br. F. R. C. Reed— 



Palceonelo cf. Maureri Beushausen, var. dunensis Beushausen. 



One imperfect specimen of a left valve from the New Cut, Torquay, 

 seems to show the characters of the shell described by Beushausen 

 as Ctenodonta (PalcBotieilo) Maureri var. dunefins ^ from the 

 Coblenzian of the Rhine. The complete outline of our example is 

 not preserved, but the special ornamentation is well seen. The latter 

 consists of a few widely separated sharp raised concentric growth- 

 ridges or lamellae, with a few (4-5) very fine concentric striae in the 

 broad concave interspaces, and their slight obliquity and increasing 

 distance apart towards the posterior end of the valve distinguish its 

 ornamentation from that of TelUnites lavisulcus Etheridge (q.v.), 

 Williams and Breger ^ would place in the genus TelUnites McCoy * 

 the species Ct. unioniformis Sandb., which Beushausen associated 

 with the group containing Ct. maureri, but their view is not here 

 adopted. 



Dimensions. — Length, c. 32 mm. Height, c. 16 mm. 



Horizon. — Red Beds (Staddon Grits). 



Locality. — New Cut, Torquay (S. 24). 



NucuUtes {Cleidophorus) suhovatus sp. nov. 



Definition. — Shell suboval, smoothly rounded, gently convex ; 

 anterior end broader and more obtuse than posterior end ; inferior 

 margin slightly arched ; postumbonal cardinal margin nearly 

 straight. Beak subanterior, inconspicuous, low, situated at about 

 one-fourth the length of the shell. Internal clavicular ridge stout, 

 slightly curved forwards, thickening below but becoming less elevated, 

 extending downwards rather less than half the height of the valve. 

 Cardinal teeth 8-9 in number, long, narrow, transverse, divergent, 

 forming a slightly fan-like group at the origin of the clavicular ridge ; 

 anterior and posterior denticulations very small and numerous. 



Dimensions. — Length, 31 mm. Height (at beak), 19 mm. Length 

 of clavicle, c. 8 mm. 



Horizon. — Meadfoot Beds. 



Z:oca%.— Meadfoot (Mus. Pract. Geol. |-g-). 



Remarks. — The specimen on which the above description is based 

 is the internal cast of a right valve figured by Phillips * as Nucula 

 ovata (Sowerby) in the belief that it was identical with the imperfectly 

 known Silurian species from the Upper Ludlow of Horeb Chapel, 

 etc., described by Sowerby as Cucullcea ovata.^ Phillips gave the 

 following definition of the species : " Transversely extended to an 

 ovate form, most obtuse towards the anterior end, and haviug a 

 width greater than the length in the ratio of 3 to 2. Interior lamina. 



^ Beushausen, Ahh. Jc. preuss. geol. LandesansL, N.F., Heft xvii, p. 87, t. vii, 

 figs. 19. 25-7. 



« Williams & Breger, Prof. Paper 89, U.S. Geol. Surv., 1916, p. 165. 



3 McCoy, Ann. Mag. Nat. Hist, ser. ii, vol. vii, 1851, p. 51 ; id., Syn. PaL 

 Foss. Woodw. Mus., 1852, p. 286, pi. ix, fig. 31. 



■* Phillips, Palceoz. Foss. Dev. Cornw., p. 39, pi. xviii, fig. 65. 



^ Sowerby, in Miirchison's Silur. SysL, p. 602, pi. iii, fig. 12. 



