SUPPLEMENT.— FONTANNESIA. cxci 



9. Fontannesia coNCENTRiCA, S. Buchman. Suppl., Plate XXIV, figs. 5, 6. 



Description. — Subplatysubleptogyral ; sublatumbilicatc, concentrumbilicate ; 

 costate, periphery convex, parcicarinate. 



Distinction. — From F. aurita, less strongly costate, and barely carinate. 



Locality and Stratum. — Dorset : Louse Hill, near Halfway House (Compton), 

 presumably from strata equivalent to Bradford- Abbas Fossil Bed. 



Date of Existence. — Concavi or Discitse hemera,, presumably. 



B. Versi- or prorsicostate (without lateral auricles, so far as evidence shows). 



10. Fontannesia tortiva, S. Buchman. Plate XLVII, figs. 8, 9. 



1892. Dumortieria grammoceroides, This Monogr., PI. xlvii, figs. 8, 9. 

 1902. Fontannesia tortiva, Emend. Amm. Nom., p. G (figs. 6, 7 misprint). 



Description. — Latumbilicate ; subrectisubversi- (to subprorsi-) costate ; periphery 

 convex, parcicarinate. 



Locality and Stratum. — Dorset : Bradford Abbas, upper part of Fossil Bed. 

 Date of Existence. — Discitse hemera. 



11. Fontannesia despecta, S. Buchman. Plate XLVII, figs. 6, 7. 



1892. Dumortieria grammoceroides, This Monogr., PI. xlvii, figs. 6, 7. 



Description. — Subplatysubleptogyral ; latumbilicate ; subrecti- prorsi- parvicos- 

 tate; periphery subtabulate, parcicarinate. 



Distinction. — From D. tortiva, the more numerous, smaller costae. 



Remarks. — A common form at Bradford Abbas, but it seems always to be small. 

 The largest of 16 specimens is 37 mm. in diameter. 



Localities and Strata. — Dorset : Bradford Abbas, upper part of Fossil Bed ; 

 Somerset : Dun dry (Mr. J. W. Tutcher), presumably from below the White Iron- 

 shot. 



Date of Existence. — Discitse hemera. 



Note. — Since the above articles were written, a specimen of this genus has 

 been found in the Lower Trigonia-Grit (discitse >>) of the Cheltenham district. 

 I have recorded it as F. cf. tortiva in ' Handbook Geol. Cheltenham,' by L Richard- 

 son, 1904, p. 230. 



