SUPPLEMENT.— BRASILIA. 



lxxxi 



Description. — Platyleptogyral, concavumbilicate ; brevilatilobate ; parvicostate 

 to striate. 



Distinction. — From B. bradfordensis, the concavumbilicus. 



Locality and Stratum. — Dorset : Bradford Abbas, Fossil Bed, lower part pre- 

 sumably. 



Date of Existence. — Concavi hemera, presumably. 



3. Brasilia ? pulchra, S. Buchman. Plate X, figs. 3, 4 ; Suppl., 



Fig. 41 in text. 



1888. Lioceras concavum, This Monogr., PI. X, figs. 3, 4. 

 1902. Brasilia pulchra, Emend. Amin, Nom., p. 3. 



Description. — Platyleptogyral, concavumbilicate, parvicostate. 

 Distinction. — From B. sublineata, the subcostation more closely 



set. 



Date of Existence. — Discitse hemera, presumably. 



Fig. 41.— Radial 



lines of Brasilia 1 



pulchra. 



4. Brasilia? pinguis (S. Buchiian). Plate XII, figs. 1 — 3; Suppl., Fig. 42 in text. 



1888. Lioceras concavum, var. pinguis, This Monogr., PI. xii, figs. 1 — 3. 

 1902. Brasilia pinguis, Emend. Amm. Nom., p. 3. 



Description. — Platysubleptogyral, concavumbilicate, parvicostate. 



Remarks. — The generic position of this species is quite un- 

 satisfactory. It is probably the representative of a series of 

 comparatively stout-whorled forms which have yet to be dis- 

 covered. 



Locality and Stratum. — Dorset : Halfway House, near Sher- 

 borne, presumably from the Bhynchonella ringens bed. ' ii n 7of 



Date of Existence.— Bradfordensis hemera, presumably. Brasilia ? pinguis - 



(3. Planifastigate. 



I put some of the following species to Brasilia in the explanation of Suppl., 

 PL XI, and therefore it is not advisable to make any change now. But they will 

 have to be separated. They are planifastigate, there being a more or less distinctly 

 defined, sloping, planate surface each side of the carina; while true Brasilia is 

 convexifastigate without any defined area bordering the carina. Further, these 

 species are distinguished by the very early date at which the smooth character 

 appears, whereas Brasilia maintains small costas. 



Quite possibly the series is akin to Lucya, and the costate species, which have 



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