﻿PLATE XXXIX. 



Zone uncertain (Jurense ?). 



Figs. 1 — 2 a. — DuMORTiEiiiA arata, S. Buckman, var. 



Fig. 1. — Side view of a variety with greater portion of test, but it is rather 

 ill-preserved. The locality is not recorded; but presumably the specimen came 

 from the Marly Limestone which underlies the Yeovil Sands, Trent, Somerset. 

 Collected by my father. 



Fig. 2. — Front view of the same, showing the furrows beside the carina. 



Fig. 2 a. — Suture-line of the same specimen. 



Jurense-zone (Dumortieria-beds). 



Figs. 3 — 5. — Dumortieria arata, S. Buckman. 



Fig. 3. — Side view of a fragmentary specimen which lacks the test. Penn 

 Wood, near Stroud. My Collection. 



Fig. 4. — Back view of the same specimen. 



Fig. 5. — Suture-line of the same specimen. 



Figs. 6 — 9. — Catullooeras Dumortleri (Thiolliere) . 



Fig. 6. — Side view of a specimen without much test, and not well preserved. 

 The occasional deeper furrows separating the ribs (periodic constrictions) are to 

 be noticed. Found in a fallen block of calcareous sandstone (Yeovil Sands) on 

 the beach at Burton Bradstock by Mr. J. B. Clark, F.G.S., who very kindly 

 presented it to me on the spot. 



Fig. 7. — Front view of the same specimen. 



Fig. 8. — Ventral portion of the same specimen towards the end of the whorl, 

 to show the ribs ending short of the carina, thus producing a faint furrow, and 

 also to exhibit the influence of a constriction. 



Fig. 9.— Suture-line of the same specimen. 



Figs. 10, 11. — Catuij.oceras Leesbergi (Branco). 



Fig. 10. — Side view of a very poorly-preserved example. Wotton-under-Edge. 

 My Collection. 



Fig. 11. — Front view of the same. 



Figs. 12 — 14. — Catulloceras insioni-simi lis (Brawns). 



Fig. 12. — Side view of a fragment. Stinchcombe Hill, Gloucestershire. My 

 Collection. 



Fig. 13. — Back view of the same. 



Fig. 14. — Aperture of the same. 



