VOL. XVIII. (i) INFERIOR-OOLITE ECHINOIDS 73 



ON THE 



STRATIGRAPHICAL AND GEOGRAPHICAL 



DISTRIBUTION 



OF 



THE INFERIOR-OOLITE ECHINOIDS 



OF THE 



WEST OF ENGLAND 

 SUPPLEMENT ' 



BY 

 L. RICHARDSON, F.R.S.E., F.L.S., P.G.S. 



AND 

 E. TALBOT PARIS, F.C.S. 



[Plate VIII.— Echinoids.] 



Since our main paper was published in 1908 we have 

 completed a detailed investigation of the Inferior OoUte of 

 the whole of the tract between the Mendips and the coast 

 at Burton Bradstock. Additional information has been 

 acquired, which it is the object of the present Supplement 

 to record. 



Wright? in his admirable monograph," records very few 

 echinoids from the Inferior-OoHte of this district. The reason 

 is, because while a number of specimens of a species may be 

 obtained locally, the total number of species found in the 

 district is small. He records Cidaris bouchardi Wright, 

 Clypeus agassizi Wr., C. alius M'Coy, Collyrites ovalis (Leske), 

 C. ringens (Agassiz) and Hemicidaris pustulosa Ag. 



In our main paper the following additional records were 

 made : 



Rubbly-Beds, Dou\t'mg.—^A crosaleuta spDiosa Ag. (p. 165) ; 

 Collyrites ovalis (Leske) var. depressus Pans" (pp. 165 and 181) ; 

 EchinnbrissHS clunicnlaris auctt. (p. 169) ; Holectypus depressus 

 (Leske), (p. 172) ; H. depressus var. coniciis Paris (pp. 172 and 183); 



I- The main paper is in Proc. Cotteswold Nat. F.C., vol. xvi., pt. II. (igo8), pp. I5i-i93;, 

 2. '-A Monolrrph on the British Fossil Echinodermata from the Oolitic formations." 



Pal. So<^-^(i858-8oV^^.^^^ ^^ ^^^^.^ ^^^^^^^ .^^ ^^^ List of Inferior Oolite Fossils in the John 



Phyllis Collection from Uoulting, Somerset, Geol. Mag., 1908, p. 512. 



