EXPLANATION OF PLATE IV. 
Fig. i . Discorbina parisiensis, (D’Orb. ). I a, upper surface; I b , lower surface; 
1 c , edge view, x 60, diam. ; I d, fragment of lower surface, showing- 
structure, greatly enlarged. Shore sand, Greyabbey, Strangford 
Lough, County Down. 
,, 2. Discorbina parisiensis, (D’Orb. ). 2 a, upper surface; 2 b , lower surface; 
2 c, edge view; x 6odiam. Off Grey Point, 6 fms. 
„ 3. Trochammina gordialis, P. and J. x 60 diam. Off Black Head, 20 
fms. 
„ 4. Tinoporus lucidus, Brady MS. 4 a, upper surface; 4 b , edge -view; 
x 40 diam. White Knowe, Strangford Lough, 6 fms. 
,, 5. Tinoporus lucidus, Brady MS. Encrusting a stem of polyzoan; x 30 
diam. Off Maiden Lighthouses, 60 fms. 
„ 6. Lituola globigeriniformis, P. and J. x 60 diam. Off Maiden Light- 
houses, 60 fms. 
,, 7. Lagena hispida, Reuss. x 60 diam. Off Black Head, 18 fms. 
,, 8. Lagena trigono-marginata, P. and J. 8 a, side view; 8 b, end view- 
showing aperture; x 60 diam. Off White Head, 7 fms. 
,, 9. Lagena oblonga, (Seguenza). 9 a, side view; 9 b, end view, showing 
aperture; x 60 diam. Off White Head, 10 fms. 
,, 10. Lagena sulcata , W. and J. x 60 diam. Off Black Head, 18 fms. 
,, 11. Lagena costata , (Will.), x 60 diam. Off Black Head, 18 fms. 
„ 12. Lagena costata, (Will.). A young specimen, x 60 diam. Off Maiden 
Lighthouses, 60 fms. 
,, 13. Lagena costata , (Will.). Bilocular, x 60 diam. Off Orlock Point, 
11 fms. 
„ 14. Lagena Williamsmi, (Alcock). x 60 diam. Off White Knowe, Strang- 
ford Lough, 6 to 8 fms. 
„ 15. Lagena Jeffrey sii, Brady, x 60 diam. Off Maiden Lighthouses, 
62 fms. 
