FORAMINIFERA FEOM EIVER MERSEY. 77 



N. scapha is very rare, and so also is JV. pauperata, which 

 H. B. Brady describes as " Possibly only the starved 

 condition of N. scapha." 



Polystomella, Lamarck. P. striato-punctata is ever pres- 

 ent, but P. crispa is rather rare. 



List of the Aig-burth (B. Mersey) Foraminifera. 



Family II. — Miliolimi. 



Biloculina elongata, d'Orb., rare, an elongated variety of 



B. rhigens. 

 Spiroloculina planulata, d'Orb., rare, and consisting of only 



a few chambers. 

 S. acutimargo, Brady, comparatively common, frequent. 

 Miliolina oblonga, Mont., rare. 

 M. seminulum, Linn., common. 

 *M. auberiana, d'Orb., very rare. 

 *M. sclerotica, Karrer, very rare. 

 M. subrotunda, Mont., very common. 

 M. fusca, Brady, rare. 

 Adelosina bicomis, W. and G., rare. 



Ophthalmidium inconstans, Brady, comparatively common. 

 Cornuspira involvens, Bss., common. 



Family IV. — Lituolid^. 



Reophax nodulosa, Brady, rare. 

 Haplophragmium canariense, d'Orb., common. 

 Ammodiscus gordialis, J. and P., specimen doubtful. 

 *Trochammina squamata, J. and P., rare. 

 *T. ochracea, Will., rather rare. 





* Those species marked with a star are new to the L.M.B.C. district. 



