EXPLANATION OF PLATE VIII. (Upper Half.) 
Fig. 1. Haplophragmium glomeratum , Brady, magnified 60 diam. Off Killy- 
begs Harbour, 17 fms. 
Fig. 2. Bulimina subteres , Brady, magnified 60 diam. Off Killybegs Harbour, 
17 fms. 
Fig. 3. Gaudryina Jiliformis, Berthelin, magnified 60 diam. Off Killybegs 
Harbour, 17 fms. 
Fig. 4. Lagena marginata , W. & J., magnified 60 diam. Off Killybegs 
Harbour, 17 fms. 
Fig. 5. Lagena marginata , yar. Orbignyana, Seguenza, magnified 60 diam. 
Off Killybegs Harbour, 17 fms. 
EXPLANATION OF PLATE VIII. (Lower Half.) 
Fig. 1. Holasterella Wrightii, spicule of, nat. size. The largest met with 
(diagram). 
Fig. 2. The same, restored, to show the perfect form 'with spiral inflation on 
the arms. Magnified 7 diameters. 
Fig. 3. The same. Furcate arm, much more magnified, to show — a, the simple 
spiral inflation, and b, the same when “ broken up.” Scale l-48th 
to l-1800th inch. 
Figs. 4, 5, 6, and 7. The same, to show the simple sexradiate and multifid 
divisions of the arms respectively (diagrams). 
Fig. 8. Sarcohexactinellid. Fragment of large surface-spicule of unknown 
species. 
Fig. 9. The same. Free end of anchoring-spicule. 
Fig. 10. Lithistid. ? Tripod-like surface-spicule of unknown species. 
Fig. 11. The same. Lateral view. 
Fig. 12. The same. Dendritically branched surface-spicule of unknown 
species. 
Fig. 13. The same. Form of body-spicule of unknown species. 
Fig. 14. Reniera ?. Sausage-shaped spicule of unknown species. 
Fig. 15. Acerate spicule of unknown sponge. 
Fig. 16. The same. 
Fig. 17. Quadriradiate fragment of spicule of unknown sponge. 
U.B. Figs. 3 and 8-17 inclusively are all drawn to the scale of l-48th 
to l-1800th inch. 
