SUPPLEMENT.— REYNESELLA. cix 



sistent ; a slightly smaller umbilicus. From (Ed. lepta, more distant, more distinct 

 costas. 



Localities and Strata. — Somerset: Dundry, Limestone and Marl Beds; not 

 uncommon; 1 specimen marked horizon 4, i.e. counting down from Sauzei (see 

 ' Quart. Journ. Geol. Soc.,' vol. lii, p. 681). Dorset : Bradford Abbas, Fossil Bed. 



Date of Existence. — Discitae, hemera. 



Subfalcate to subarcuate. 

 Body-chamber has a slight tendency to thicken. 



XLIII. Genus — Reynesella, 8. Buchnan. 



(Type: Reynesella juncta, sp. n.) 

 1902. Reynesella, Emend. Amm. Nom., p. 5. 



Description. — Subplatysubleptogyral, sublatumbilicate ; laterally flexiradiate ; 

 peripherally subacutanguliradiate, penetabulate, distincticarinate. (Radial line, 

 fig. 70, p. clxv.) 



Distinction. — From Darellella, the flexed radial line, and the more distinct 

 carina. 



Remarks. — The umbilicus is smaller relatively to' development, and the joined 

 costas are a distinct feature, both characters of separation from Darellella. 



1. Reynesella juncta, 8. Buckman. Suppl., Plate XVII, figs. 4 — 6. 



Description. — Sublatumbilicate ; costate ; many costas connate. 



Localities and* Strata. — Dorset: Bradford Abbas, Fossil Bed; Stoke Knap, 

 Building Stone, near the top. Somerset: Dundry, Limestone and Marl Beds 

 (E. Wilson). 



Date of Existence. — Discitae hemera. 



2. Reynesella modes, 8. Buckman. Plate XVI, figs. 7, 8 (Type), fig. 9; Suppl., 



Plate XVIII, figs. 24, 25. 



1889. Hyperlioceras Walkeri, This Monogr., PI. xvi, figs. 7 — 9. 

 1902. Reynesella piodes, Emend. Amm. Nom., p. 5. 



Description. — Subangustumbilicate ; subcostate to parvicostate. 

 Distinction. — From B. juncta, a rather smaller, less costate, umbilicus; less coarse 

 costae. 



