306 On the Ostracoda and 
Nonionina turgida, Williamson, sp. 
Rotalina turgida, Williamson (1858), Rec. For. Gt. Br. p. 50, pl. 4. figs. 
95-97. 
Montrose Basin; very rare. ; cb 
A single shell of the still more inflated variety Nonionina 
scapha occurred in the material from the estuary of the Ribble; 
but it appeared to be a dead specimen, and it has therefore 
been omitted from the catalogue. 
Nonionina depressula, Walker & Jacob, sp. 
Nautilus depressulus, Walker & Jacob (fide Kanmacher) (1798), Adams’s 
Essays, 2nd ed. p. 641, pl. 14. fig. 33. 
The remarks appended to Polystomella striatopunctata re- 
lative to distribution apply with almost equal force to this 
species. It is almost invariably abundant in brackish pools. 
Notes. 
1. In the following Table an attempt is made to show the | 
relative frequency of the various species of Foraminifera on 
the same plan as that previously adopted with respect to the 
Entomostraca,—three asterisks being placed to the commonest 
forms, two to those occurring frequently but not in any consi- 
derable number, and one to those of extreme rarity. In most 
of the columns these marks indicate with tolerable accuracy 
the relative distribution of the species; but in a few, either 
from insufficiency of material or other circumstance, the record 
must be taken with reservation. The columns headed 9, 11, 
and 12 (River Ribble, Loch Grunard, and Portree Harbour) 
are of this category; and that marked pd (Scheldt) is not 
given as in any sense an exhaustive catalogue, but only as a 
note of the specimens placed in our hands by Mr. E. C. 
Davison. 
2. Column 15, the summary of Mr. Parker's subrecent 
gatherings from the Fen clay, requires the addition of the 
ollowing species to make it complete. As none of them have 
been found living in any of the localities treated of in the pre- 
sent paper, it was thought needless to extend the Table by 
their insertion :— 
Lituola agglutinans, D’ Ord. * Uvigerina aculeata, D’ Orb.* 
Spirillina vivipara, Ehren. * Visus enne DOR 
Orb. Pulvinulina Karsteni, Reuss. ** 
Nodosaria raphanus, Linn.* Nonionina umbilicatula, Montag.* 
aculeata, D'Orb.* | osa, D’ Orb, ** 
