MIDDLE CHALK—MldftOSCOlhO SfftDCTtTRE. 
511 
The following is a list of the Foraminifera isolated during the 
examination of the washings and the acid residues, and named by 
Mr. F. Chapman : — 
-—- 
Beer, Devon. 
Lulworth, 
Dorset. 
Eastbourne, 
Sussex. 
Dover, Kent. 
Hitchin, 
Herts. 
Hessle, 
Yorks. 
Haplopliragmium sp. nov.- 
_ 
_ 
_ 
___ 
X 
Ammodiscus incertus, d'Orb. sp. 
- 
- 
— 
X 
— 
X 
Trochammina sp. 
- 
-- 
— 
— 
— 
X 
Textularia trochus, d'Orb. 
- 
X 
_ 
— 
— 
— 
„ turris, d'Orb. 
Tritaxia tricarinata, Reuss 
- 
— 
— 
X 
X 
— 
- 
— 
— 
— 
X 
X 
— 
Gaudryina filiformis, Berth. 
- 
— 
X 
— 
— 
„ (?) species - 
- 
- 
— 
X 
- 
— 
— 
Bulimina affinis, d'Orb. 
- 
— 
X 
— 
— 
X 
— 
„ brevis, d'Orb. 
- 
— 
X 
— 
— 
X 
— 
, y . (?) species - 
- 
— 
- 
X 
- 
— 
— 
Cristellaria cultrata, Montf. sp. 
- 
X 
- 
— 
— 
X 
— 
Globigerina marginata, Reuss. sp. 
X 
— 
- 
X 
X 
— 
Truncatulina ungeriana, d'Orb. sp. - 
lobatula, Walker and 
— 
— 
— 
X 
X 
— 
Jacob, sp. - 
- 
— 
— 
— 
X 
— 
„ akneriana, d'Orb. sp 
Anomalina ammonoides, Reuss. sp. 
- 
— 
— 
— 
_ 
X 
— 
- 
X 
— 
— 
— 
X 
— 
Rotalia Soldani, d'Orb. sp. 
• 
— 
X 
— 
— 
This list is too short to make a satisfactory comparison. All our 
specimens of this zone, other than those experimented on, are 
hard and rocky. The Hitchin specimen was the softest, and, 
though a larger amount of this material was broken up and 
washed, the result was poor. 
Ostracoda. — These organisms are not common in this 
zone ; the only ones isolated, Cytherella Munsteri (Rom.) and 
C. ovata, occurred in the Hitchin specimen. 
