SUPPLEMENT.— BRAS1LINA. lxxxiii 



Localities and Strata. — Dorset: Bradford Abbas with Rhynchonella ring ens } 

 " near Sherborne," probably Ambers Hill ; Stoke Knap, in the Building Stone (from 

 Mr. Tntcher). 



Date of Existence. — Bradfordensis hemera. 



XXXI. Genus — Brasilina, S. Buchman. 



(Type: Brasilina Tutcheri, sp. n.) 

 1899. Brasilina. This Monogr., Explau. Suppl., PI. x, xi. 



Definition. — Platyleptogyral, snbangnstnmbilicate ; densisep- 

 tate, subbrevi-sublatilobate ; laterally anguliradiate ; peripherally 

 subacutanguliradiate, fastigate, carinate. 



Distinction. — From Brasilia, greater compression in proportion 

 to umbilication. 



Remarks. — It would have been desirable to make Baylii the 

 type of the genus, as it seems preferable to choose the least retro- 



. . . • f i w -. i i FlG - 44.— Radial 



gressive species of a series tor that office; but there was the line of 



difficulty of obtaining details of the suture-line. Tutcheri. 



1. Brasilina Baylii (S. Buchman). Plate III, figs. 6, 7 ; Suppl., Plate XI, fig. 34. 



1887. Ludwigia Murchison^:, var. Baylii, This Monogr., PI. iii, fig. 6. 



Description. — Platysubleptogyral, gradumbilicate, parvicostate. 



Remarks. — So far as it can be observed the suture-line seems to show the sub- 

 brevi-sublatilobate character. 



Distinction. — From Am. Murchisonae falcatus, Quenstedt 1 , a larger umbilicus and 

 rather coarser costas. 



Note. — Am. Marchisonse falcatus would seem to be another species of the same 

 genus. 



Locality and Stratum. — Dorset : Bradford Abbas, in the Paving Bed. 



Date of Existence. — Murchisonae or Bradfordensis hemera. 



2. Brasilina Tutcheri, S. Buchman. Suppl., figs. 44, 45 in text. 



Description. — Platyleptogyral, subconcavumbilicate, parvicostate to striate. 

 Distinction. — From B. Baylii, smaller umbilicus and less costation. 

 Localities and Strata. — Dorset: Stoke Knap, near Broad Windsor, evident I y 

 from the Building Stone (Mr. J. W. Tutcher) ; Bradford Abbas, from the Paving 

 1 ' Am. Schwab. Jura,' pi. lix, fig. 15. 



