VINE : POLYZOA AND MICROZOA OF YORKSHIRE AND NORFOLK. 389 
1890. See Monog. Eiitom. Cret. J. and H., pp. 44-45, pis. iii., iv. 
Horizon : Red Chalk Hnnstanton (Vine) : Flaniborougli (Jones). 
6. Cytherella Muensteri (Romer) 1849. Monog. Entom. Cret. 
1890. Monog. Entom. Cret. J. and H., p. 46 for references, &c. 
Horizon : Red Chalk Hunstanton. 
IV. FORAMINIFERA. 
It will not be necessary to give elaborate details of the Forami- 
nifera of the Red Chalk. Some of the examples are unique, but 
nearly all of them belong to the ordinary chalk forms, and with the 
exception of three are similar to the species already catalogued from 
the Cambridge Greensand. 
1. Placopsilina cenomana d'Orb. 
Examples of this genus, which are, according to Prof. T. R. Jones 
(Fossil Foraminifera Brit. Mus., p. 87, fixed Litiwla,) are abundant 
in the Red Chalk, adherent to a variety of fossils. 
Horizon, &c. : Red Chalk Hunstanton : On Terehratula biplicata. 
2. Nodosaria obscura, Reuss. 
Unique example. 
Horizon : Red Chalk Hunstanton,"' Middle layer B. 
3. Cristellaria rotulata. Lam. 
This species is very small and rather rare in the Red Chalk. In 
the Cambridge Greensand (Phosphate Beds) it literally swarms in the 
debris, and examples may be picked out by thousands. 
Horizon : Red Chalk Hunstanton. Top layer A. and sections in 
the Middle layer B in chalk ; Red Chalk Speeton (Yorkshire). 
4. Bulimina presli, Reuss. 
Examples rather rare. 
Horizon : Red Chalk Hunstanton. Mid. layer B, and top layer A. 
5. Verneuilina triquetra Miinster. (V. tricarinata, d'Orb.) 
Horizon : Red Chalk Hunstanton, Top layer A, rare. Camb. 
Greensand : abundant. 
6. Globigerina bulloides, d'Orb. 
This form is very abundant in sections of Red Chalk from both 
* I could quote a variety of horizons for the species indicated, but I have 
kept to my own labours chiefly. 
