cii INFERIOR OOLITE AMMONITES. 



A. Sublatumbilicate. 



XXXVII. Genus — Beaunsella, S. Buckman. 



(Type -. Braunsella semilenis, sp. n.) 



1902. Braunsia, Emend. Amin. Norn., p. 3. 



Definition. — Platysubleptogyral, sublatumbilicate ; laterally an- 

 il guliradiate; peripherally subrectiradiate,subtabulate,parvicarinate. 

 U Distinction. — From other V-script genera by smootlmess ap- 

 ■=*: pearing while the species are sublatumbilicate. In Pseudogra- 



Eig.64«. — Radial line 7 , . , . , , ... 



of Braunseiia phoceras, which is stouter and less umbilicate, smoothness is not 

 present till angustumbilication is attained. 

 Remarks. — The name has to be changed on account of prior use. 



1. Beaunsella semilenis, S. Buckman. SuppL, Plate XVII, figs. 19 — 21. 



Description. — Costate to levigate. 



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



Date of Existence. — Discitfe hemera. 



2. Beaunsella lenis (8. Buckman). Plate VII, figs. 5, 6 ; SuppL, Plate XVII, fig. 32. 



1888. Lioceras ambigttum, This Mouogr., PL vii, figs. 5, 6, only. 

 1902. Braunsia lenis, Emend. Amm. Nom., p. 3. 



Description. — Subcostate to levigate. 



Distinction. — From P>. semilenis, a smaller umbilicus and smoother whorls. 



Remarks. — Confounded with Ludwigia (olim Lioceras) ambigua,hut is far more 

 umbilicate and has a different radial line. 



Localities and Strata. — Dorset: Bradford Abbas, perhaps from Fossil Bed, 

 upper part, and the idea of Paving Bed erroneous. Somerset : Dundry (E. Wilson), 

 evidently from beds below " White Ironshot ; " specimen 78 mm. in diameter, wholly 

 septate, but from indications it must have been of a diameter of nearly 130 mm. 



Date of Existence. — Discitse hemera, perhaps. 



3. Beaunsella Peotabilis, S. Buckman. SuppL, Plate XVII, figs. 7 — 9. 



Description. — Subplaty-subleptogyral ; sublatumbilicate; costate, seldom con- 

 naticostate ; periphery subtabulate, parvicarinate. 



Remarks. — A morphic equivalent of B. semilenis, but more compressed, and with 

 a less angulate radial line. That, in its series, costa? would fail rapidly as in 

 Braunsella may be doubted : hence the query after the generic name. 



Locality am! Stratum. — Dorset: Bradford Abbas, Fossil Bed, upper part. 



Date of Existence. — Discitfe hemera. 



