58 LIVERPOOL MARINE BIOLOGY COMMITTEE REPORT. 



the Dee, it had only been known as a miocene fossil form. 

 P. lanceolata was described as P. fusiformis in the Dee cata- 

 logue. P. concava is a small rare form, concave on one 

 surface and with a wing, or flattened out extension of shell 

 substance surrounding it. It is said to be parasitic ; but all 

 our specimens are free. P. orhignyi is a name given to 

 several species with numerous irregularly projecting aper- 

 tures. Mr. Brady does not figure any of the three last- 

 named forms. 



Uvigerina spp., d'Orb. 



U. pygmcsa and U. angulosa are of frequent occurrence, 

 and generally distributed. U. canariensis (U. irregularis, 

 Brady, Dee catalogue) is very rare. 



Orbidina, d'Orb. 



I have several examples of what I take to be this form 

 from the River Dee, which are brown and chitinous, but not 

 perfectly calcareous. This imperfectly calcified condition is 

 frequent among the porcellanous group Miliolidse, but very 

 unusual in the Perforata. 



Glohigerina bulloides, d'Orb. 

 General, but never common. 



Pullenia sphoeroides, d'Orb. 



Is very diminutive, and very rare. Only Dee specimens 

 observed. 



Sjyhoeroidina dehiscens, P. and J. 



Essentially a deep water form ; very small and feeble 

 with us. Only one example from Dee estuary found. 



Spirillina spp., Ehrenb. 



All the four species of this genus are rare. Of S. mar- 

 garitifera, I have only one specimen, which I obtained in a 

 tow-net from the " bore " of the tide at Chester. S. tuber cu- 

 lata is also very rare, and was first described (though not 



