THE FORAMINIFERA. 61 



Mlliolina spp., Will. 



Of this genus, the species M, ohlonga, M, seminidumt and 

 M, suhrotimda, are common throughout the whole district. 

 Very interesting chitinous brackish water examples of the 

 latter species occur in the river Dee. M. secans and M. 

 bicornis are rather less frequent. M. trigonula is generally 

 distributed but not common. The allied form M. tricarinata 

 is very rare, and has been found only at the mouth of the 

 Dee. Of M. venusta and M. hoiieana, a single scarcely typical 

 example of each has been obtained from the same locality. 

 M, agglutinans is sparingly distributed over the whole 

 district. M. fiisca occurs in the river Dee. 



Mlliolina sjnculifera, n.sp. (PI. I, fig. 3). 



The only remaining species of Miliolina does not appear to 

 have been previously noticed. It is an elongated form allied 

 to M, agglutinans, and has a "test" composed entirely of 

 sponge spicules. The selective habit so indicated, has, in 

 reference to other genera, been considered sufficient to war- 

 rant a separate specific name. I have, therefore, named this 

 form M. spiculifera. A single example only, from the 

 estuary of the Dee, has yet been obtained (see PI. I, fig. 3). 



Ophthalmidium inconstans, Brady. 



In the paper above referred to, Messrs. Balkwill and 

 Wright also record the occurrence, generally round the Irish 

 coast, of a small species of Ophthahnidium not previously 

 described. The genus had not been noticed before in British 

 seas ; so it is an addition to our British fauna. They figure 

 and describe the species as 0. carinatum, nov. sp. I have 

 found several examples of a somewhat similar form in the 

 Dee estuary, but they do not appear to me specifically 

 distinct from 0. inconstans, Brady. 



Cornuspira involvens, Reuss. 



This form is generally distributed, but T have not yet 



