THE FORAMINIFERA. 55 



Ammocliscus spp., Eeuss. 



A. incertus occurs rarely in shore gatherings and dredg- 

 ings, and is sometimes very fine. A. gordialis and A. 

 charoides are much more rare. A, shoneanus is also very rare, 

 but it is interesting to note that since it was first recorded 

 from the river Dee in 1878 (Siddall, Proceedings of Chester 

 Society Nat. Sci., part ii, p. 46, figs. 1, 2), it has been 

 recorded by several observers from the coast of Ireland, and 

 by Mr. H. B. Brady from 120 fathoms, ofi" Christmas 

 Harbour, Kerguelen Island, and from 3,950 fathoms — the 

 very deepest part — in the North Pacific. 



Trochammina spp., P. and S. 



T. nitida and T. inflata are both generally distributed, 

 but nowhere common in the district. T. meter escens, which 

 is apparently but a feeble brackish-water form of inflata^ 

 occurs occasionally in the Dee. 



Textularia spp., Defrance. 



Further examination of dredgings and shore-gatherings 

 will probably yield other species of this genus. The examples 

 I have so far obtained do not include several that have been 

 found on the opposite Irish coast. 



Verneuilina spp., d'Orb. 



The arenaceous form V. polystropha is generally distri- 

 buted over the district ; but of V. spinulosa only a single 

 enfeebled example has yet been found. It is more essen- 

 tially a deep-water form. 



Bigenerina digitata, d'Orb. 



Examples of this form are rare and small, but typical. 



BuUmina spp., d'Orb. 



The type form of Bidimina, viz., B. piipoideSy is frequent 

 at all depths, B. elegans and B. clegantissima are much less 

 common. The remaining species are rarely met with. Of 



