288 Mr. Henry B. Brady on 
an extent calcareous or earthy constituents are concerned in 
its formation. 
uinqueloculina fusca is by far the commonest of the 
brackish Miliole; and reference to the Table will show how 
exclusively it affects brackish localities. In the columns de- 
voted to the areas least affected by the influx of fresh water 
(such as Montrose Basin, Budle Bay, the estuaries of the 
Blyth, Forth, and Ribble) it is comparatively absent. In 
those representing the Fen district it 1s also wanting, except 
in Hickling Broad and the river Bure. But in the estuarian 
pools of Northumherland and Durham generally it is quite 
common, and in the brackish shallows of the lochs on the west 
of Scotland it is invariably to be found. In the Westport 
gathering (Clew Bay) it is abundant. 
Quinqueloculina secans, D'Orbigny. 
Quinqueloculina secans, D'Orb.(1826), Ann. Sci. Nat. vol. vii. p. 308. no. 43, 
Modèle no. 96. 
Rare in brackish water; found with other marine species 
at Budle Bay, in the Wansbeck, and in the Blyth: one or two 
specimens also from Hartlepool Slake. 
Quinqueloculina bicornis, Walker & Jacob, sp. 
Serpula bicornis, Walker & Jacob (fide Kanmacher) (1798), Adams's 
Essays on the Microscope, 2nd ed. p. 633, pl. 14. fig. 2. . 
_ Observed only in Budle Bay. It is a common marine spe- 
cies on the Northumberland coast. 
Trochammina squamata, Parker & Jones. PI. XI. fig. 4. 
Trochammina squamata, Parker & Jones (1861), Quart. Journ. Geol. Soc. 
vol. xvi. p. 304. no. 88. 
The typical Trochammina squamata is almost unknown as 
a recent British species, one or two specimens from Mr. Jef- 
freys's Hebrides dredgings in 1866* being the only previous 
instance of its occurrence in our seas. The shell figured at 
Pl. XI. fig. 4 was also found in a Hebrides locality (Loch 
Grunard, Islay), but in brackish water and associated with 
* See “Notes on the Rhizopodal Fauna of the Hebrides,” Brit. Assoc. 
Report, 1866, (Transactions) p. 69. 
