SUPPLEMENT.— STOKEIA. cxxvii 



Remarks. — For comparison with the species of the genus and with species of 

 Darellia, Hyperlioceras, etc., formerly confounded herewith, an immature example 

 has been depicted in Suppl., Plate XVIII, figs. 1 — 3. 



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



Date of Existence. — Discitse hemera. 



4. Toxolioceeas tenerum, S.BucJcman. Suppl. Fig. 98 in text. 



Description. — Levigate, angustumbilicate (subconcavumbilicate) . 

 Distinction. — From T. Walheri, the smaller umbilicus. 



Remarks. — In T. Walheri excentric coiling commences at a radius of 67 mm.; 

 in this species it begins at a radius of 31 mm. In T. Walheri this excentric 



Fig. 98. — Toxolioceras tenerum. 



coiling follows after a gradumbilicate stage, in this species after a subconcavumbili- 

 cate stage. 



Locality and Stratum. — [Dorset : Bradford Abbas, Fossil Bed], certainly by 

 matrix, though figured specimen not labelled. 



Date of Existence. — Discitse hemera. 



Falcate, subprojected peripherally. 

 LIT. Genus — Stokeia, 1 S. Buchnan. 



(Type : Stokeia marmorea, sp. u.) 



Definition. — Perplatyleptogyral, angustumbilicate ; laterally flexiradiate ; peri- 

 pherally subacutanguliradiate, penetabulate, alticarinate. (Radial line, fig. 99, 

 p. clxv.) 



1 Stoke Knap, near Broad Windsor. 



