74 Dr. Arthur Roice — Uintacrimis near Dover. 



Var. DENSA, var. nov. 



Figs. l-Tb. — Serial transverse sections (type-specimen), x 3. The septa in the 

 highest section (Fig. 7) were partly silicified, and a camera lucida 

 drawing was necessary to show their disposition clearly. Tournaisian : 

 coast at Malahide (locahty i), co. Dublin. Vaughan Collection. 



Fig. 8. — Transverse section of another example, x 3. The section is cut just 

 above the floor of the calyx ; the cardinal septum is therefore very 

 short and some of the septa disconnected. Tournaisian (Zo sub- 

 zone) : Big Weston Wood Quarry, Portishead, near Bristol. 

 Vaughan Collection. 



Plate V. 

 The register numbers refer to specimens in the British Museum (Natural History). 



Zapheentis konixcki, M.-Ed. & H. 



Fig. 1. — Transverse section of a mature individual, cut just below the floor of the 

 calyx. X 3. Tournaisian (Z, subzone) : Strawberry Hill, East 

 Clevedon, near Bristol. Vaughan Collection. 



Fig. la. — A further section cut 1-3 cm. below preceding, x 3. 



Fig. 2. — Vertical section cut down the cardinal fossula. Nat. size. The thick black 

 line represents the wall, and the shaded parts the intersections of 

 septa in the plane of section. The vesicular tabuhB, depressed in 

 the fossula (to right-hand side of figure), are shown, and also the 

 interruption in the epitheca through rejuvenescence. The calyx of 

 this specimen was identical with that shown in Fig. 4«. Tournai. 

 R. 11,678. Camera lucida drawing. 



Figs. 3-3c. — Serial transverse sections of a typical example, x 3. Parts of the 

 wall have been destroyed by silicification, as also some of the tips of 

 the minor septa. Toui'nai. R. 11,661. Camera lucida drawings. 



Fig. 4.— Profile (/o?-w« iy^im). x f. Tournai. R. 11,660. 



Fig. 4rt. — Calyx of preceding. 



Zaphrentis delanouei, M.-Ed. & H. 



Fig. 5. — Front view of a typical example. Half of the calicinal wall is broken 

 away, displaying the septal arrangements within. The central 

 tabular area is destroyed, x f. Tournai. R. 11,682. 



Fig. 5a. — The same, seen from above. 



Figs. 6-6A. — Serial transverse sections from a mature individual. Camera lucida 

 drawings ; the parts without detail are restored, x 3. Tournaisian 

 (horizon ;3) : Avon Gorge, Bristol. Vaughan Collection. 



Fig. 7. — Transverse section of a young individual, x 3. Tournaisian: coast at 

 Malahide, co. Dublin (locality i). Vaughan Collection. 



[To be concluded in the next Number.) 



IV. — UlNTACRINUS IK THE RiNGWOULD ArEA, NEAE DoTER. 

 By Dr. Akthur "W. Rowe, F.G.S. 



WHEN" -we were gathering material and data for that portion of 

 the paper on Kent and Sussex ' dealing with the Dover section 

 we made careful search for Uintacrinus both on the top of the cliff, 

 north of St. Margaret's Bay, and on the high ground immediately to 

 the westward of the cliff. We failed to find it in either situation, and 

 there were no quarries close to the coast. A thick tabular band of 



' "The Zones of the White Chalk of the English Coast"; Part 1, Kent and 

 Sussex: Proc. Geol. Assoc, vol. xvi, part 6 (1900). 



