PLATE XVI. 
Figs. 1—1d.—CoryNELLA CHADWICKI, Hinde, sp. nov. (Page 223.) 
\ 
Fig. 1—A large specimen, natural size. From the Coralline Oolite, Plicatilis-zone, at Langton Wold, 
near Malton, Yorkshire. (Collection Mr. S. Chadwick.) 
Fig. 1 a.—A vertical median section, showing the cloacal tube and portions of the canals which open 
into it. Natural size. 
Fig. 1 b.—A transverse section of another specimen, showing the thickness of the sponge-wall. 
Fig. 1c.—A fragment of the outer surface, showing the disposition of the fibres and the irregular pores 
between them. Enlarged 10 diameters. 
Fig. 1d.—Portion of a transverse section, showing the spicular structure of the fibres. Enlarged 
60 diameters. 
Figs. 2, 2a.—CoRYNELLA LANGTONENSIS, Hinde, sp. nov. (Page 222.) 
Fig. 2.—A specimen from the Coral Rag at Langton Wold. Natural size. (Collection Mr. 8. Chadwick.) 
Fig. 2a.—A portion of a transverse section of another specimen, showing the spicular fibres. Enlarged 
60 diameters. 
Figs. 3—3 ¢c—CoRYNELLA PUNCTATA, Hinde, sp. nov. (Page 222.) 
Fig. 3.—A single individual. Natural size. From the Oolitic Marl of the Inferior Oolite at Ravensgate 
Hill, near Cheltenham. Collected by Mr. R. F. Tomes. 
Figs. 3a, 3b.—Two small colonies. Natural size. From the same horizon and locality. 
Fig. 3c.—A portion of the exterior surface, showing the disposition of the fibres and the irregular ostial 
apertures. Enlarged 15 diameters. 
Figs. 4—4f.—CoRYNELLA CRIBRATA, Hinde, sp. nov. (Page 224.) 
Fig. 4.—A single individual, showing the furrowed character of the wall. Natural size. 
Figs. 4a, 4.6.—Two small colonies. Natural size. In 4a the spongites scarcely at all project, whilst in 
4b they are more extended. 
Figs. 4c—4e.—Three colonies showing variations in growth and size of the spongites. Natural size. 
All the specimens are from the Great Oolite at Hampton Cliffs, near Bath. Woodwardian Museum, 
Cambridge (Walton Collection). 
Fig. 4f—A portion of a transverse section, showing the spicules forming the fibres. Enlarged 
60 diameters. 
Figs. 5—5 e.-—HOLcosponeia PoLita, Hinde, sp. nov. (Page 228.) 
Fig. 5.—A single individual. Natural size. 
Figs. 5a—5 c.—Three small colonies. Natural size. All from the Lower Coral Rag, Perarmatus-zone, 
at Suffield, Yorkshire. (Collection Mr. S. Chadwick.) 
Fig. 5d.—A portion of a transverse section, showing the disposition and the thickness of the fibres. 
Enlarged 10 diameters. 
Fig. 5 e—A portion of the same, showing the spicular character of the fibres. Enlarged 60 diameters. 
Figs. 6—6 c.—HOLCOSPONGIA FLORICEPS, Phillips, sp. (Page 226.) 
Fig. 6.—The type-specimen. Natural size. From the Lower Coral Rag at Hackness, Yorkshire. 
York Museum. 
Fig. 6a.—Another specimen, in which the surface furrows have been obliterated and only the fibrous 
mesh is shown on the exterior. From the Lower Coral Rag at Suffield, Yorkshire. (Collection 
Mr. 8S. Chadwick.) 
Fig. 6b.—A single spongite, broken off from a compound mass, showing the lower portion enclosed by a 
dermal layer. Natural size. 
Fig. 6c.—A portion of a transverse section taken from the type-specimen, showing the spicular 
structure of the fibres. Enlarged 60 diameters. 
