164 PAPEKS, ETC. 



The loop 13 sliort ; after passing the crura it forms a seml- 

 circular ring, sliglitly tliickening iu its centi'e. 



This little shell is not uncommon in tlie Oolite of Hamp- 

 ton ClifFs, and is the first Terebratullna recorded in Briti5>h 

 Jurassic beds. In its external form it is not unlike Tere- 

 hratulina suhradiata, but it does not, in any cxample I have 

 Seen, attain one-teuth the size of that species. It is also 

 more circular, less convex, and has a more pronounced 

 sinus in the ventral valve than that shell.* 



The T. radiata appears to have continued upwards from 

 the Inferior Oolite, as I am unable to separate from it 

 some spccimens I have obtained from Dmidry, near 

 Bristol, the only distinction being that the latter assume a 

 more elongated form, which is to be observed by comparing 

 pl. L, fig. 14 (from Dundry) with figs. 11, 12 (from Hamp- 

 ton Cliffs). 



ZELLANIA, Moore— 1854. 

 Three species of this genus were described by me in the 

 Proccedinr/s of the Somersetshire Archceological and Natural 

 Ilistory Sockty, for 1854; one being from the Upper Lias, 

 the other from the Inferior Oolite of Dundry. To these 1 

 have to add another from Dundry, and a fifth species from 

 the Oolite of Hampton CllfFs. The genus also occurs in 

 the Coral ßag of Lyneham, Wilts. Its ränge is therefore 

 shown to extend from the Upper Lias to the uppermost 

 beds of the Oolite. 



Zellania globata, Moore. 

 PI. L, figs. 15-17. 

 Shell very small, globose ; valves moderately convex, 



* In all the examples that have come under my notice, the crural pro- 

 cesses, which are usually joined in this genus, are disconnected. 



