316 A. J. Juices-Browne & R. B. Neivton — 



This is the prevailing fossil of the bed from which the collection 

 was made. A large nurober of examples were obtained, most of 

 them being crusbed and flattened, sometimes from front to back 

 and sometimes from side to side, but a few occurring in harder 

 ferruginous lumps or concretions preserve much of their original 

 convex character. 



Distribution. — Silurian to Middle Devonian. 



Lept^na rhomboidalis, Wilckens, sp. 

 This species was recorded by Mr. Whidborne and five specimens 

 have been seen. 



Distribution. — Silurian to Upper Devonian and Carboniferous. 



Okthis interlineata, J. de C. Sowerby. 

 This species was not recorded by Whidborne and seems to be rare, 

 for only two examples have been seen. 



Distribution. — Middle and Upper Devonian (Etheridge). 



Orthotetes umbraculum, Schlotheim, sp. 



Recorded and figured by Whidborne in Geol. Mag., 1901. 



The figured specimen and seven other fragments exist. 



This species is regarded by Dr. Ivor Thomas as belonging to his 

 genus 8cliellwienella {The British Carboniferous Orthotetince : Mem. 

 Geol. Surv. Gt. Britain, 1910, Palaeontology, vol. i, pt. ii, p. 97). 



Distribution. — Lower to Upper Devonian (Etheridge). 



SCHIZOPHORIA STEIATTJLA, Schlotlieim, Sp. 



Hysterolithus, LinnEeus, Museum Tessinianum, 1753, pi. v, figs. 2, won figs. 1. 

 Anomia hysterita, Linn. Syst. Natures, 1758, 10th ed., p. 703, jpars. 

 Orthis hysterita, Gmelin, in Whidborne, Geol. Mag., 1901, p. 536. 

 0. aff. Monnieri, Eouault, in Whidborne, op. cit. 



Having examined the original figures of Linnaeus in his Mus. Tess. 

 I find that figures No. 2 represent internal casts of the form which 

 Schlotheim subsequently called Terebratulites striatulus, while figures 

 No. 1 portray a different species, for which the name hysterita should 

 be retained. The Torquay specimens are striatula. 



Distribution. — Orthis hysterita is recorded by Kayser from the 

 Lower Devonian of Germany, and this may be the true hysterita, but 

 0. striatula has not been recorded from the Lower Devonian. On 

 the other hand, it occurs frequently in the Middle and in the Upper 

 Devonian of England, France, and Germany {teste Davidson, Haug, 

 and Holzapfel). 



Spirifer curvattjs, Schlotheim, sp. 



Eecognized and figured by Whidborne, Geol. Mag., 1901. 



Several specimens of this species occur, including that figured by 

 Whidborne, but they are all more or less crushed. Two of them 

 are impressions of the outer surface and show the characteristic 

 ornamentation. 



Distribution. — Lower and Middle Devonian. 



Spirifer speciosus, Schlotheim, sp. 

 S. costatus, J. de C. Sowerby, Trans. Geol. Soc. Lond., 1840. 



Two examples of this species occur, and are probably those which 

 Mr. Whidborne took for 8. primcevus, Steininger. The latter, 



ii 



