FROM THE UPPER AND LOWER WHITE CHALK. 15 
Some primary septa nearly reach those opposite to them, and form a rudimentary 
columella. They are dentate, crowded, and are granular laterally. 
Diameter of usual-sized calices, 3th inch. 
Locality. Gravesend Chalk. In the British Museum (Dixon Collection). 
The condition in which the specimens of this species are found is very remarkable. 
The inside of nearly every calice has been worn away, so that the mural edges of the 
septa are all that remain. ‘The perfect calices appear to have shrunk from the surrounding 
coenenchyma, and in many places the costa have been worn off. 
A large Calice magnified. 
There are several specimens of Corals from the Lower Chalk, which cannot, however, 
be identified, on account of their fragmentary condition. Most probably, Oxchotrochus 
serpentinus, Duncan, is a Lower as well as an Upper Chalk form. 
The following is a complete list of the Fossil Corals from the Upper and Lower White 
Chalk of Great Britain : 
Il].—List or New Sprcirs. 
1. Caryophyllia Lonsdalei, Duncan. 
2. 52 Tennanti, = 
3. Onchotrochus serpentinus, ,, 
4. Trochosmilia (Celosmilia) cornucopia, Duncan. 
5. . Wiltshirt, 5. 
6. me a Woodward, ,, 
te rs iF granuata, 
8. F 2 cylindracea, ,, 
9. Parasmilia monilis, Duncan. 
10. n granulata, , 
— 
pal 
. Diblasus Gravensis, Lonsdale. 
