PLATE II. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
Fig. 7. 
Fig. 8. 
Fig. 9. 
Fig. 10. 
Discocytis profunda, Gveg. Chalk: Charing, Kent. xl6dia. 
Jones Coll. [D. 2851.] 
Discocytis profunda, Greg. Chalk : Charing, Kent. xl6dia. 
Jones Coll. [D. 2851.] 
Discocytis profunda, Greg. Chalk : Charing, Kent. The 
upper surface of a third specimen ; x 16 dia. Jones Coll. 
[D. 2851.] 
Bicavea rotaformis, Greg. Lower Chalk : Freshwater, Isle of 
Wight. The upper surface ; x 8 dia. Capron Coll. 
[D. 2996.] 
Bicavea rotaformis, Greg. Lower Chalk : Freshwater, Isle of 
Wight. The under surface and part of the stem ; x 7 dia. 
Capron Coll. [D. 2996.] 
Bicavea rotaformis, Greg. Upper Chalk : loc. ? Two zoaria 
growing from the same stem ; x 6 dia. Old Coll. 
[D. 2997.] 
Homoeosolen virgulosus, Greg. Middle Chalk — Zone of 
Micraster cortestudinarium : Chatham. Fig. 7«, the 
obverse face of a young zoarium, x 6 dia. ; Fig. 76, the 
obverse face of the shorter branch and the reverse face of 
the longer branch of the same zoarium, x 6 dia. Gamble 
Coll. [D. 3959.] 
Homoeosolen virgulosus, Greg. Middle Chalk — Zone of 
Micraster cortestudinarium : Chatham. Fig. 8a, the 
obverse surface of a still younger zoarium, x 6 dia. ; 
Fig. 86, the reverse surface of the same specimen, x 6 dia. 
Vine Coll. [D. 689.] 
Homoeosolen fenestratus, d’Orb. Middle Chalk — Zone of 
Micraster cortestudinarium : Chatham. The obverse surface 
of a variety with long pinnules ; x 11 dia. Gamble Coll. 
[D. 3968.] 
Homoeosolen fenestratus, d’Orb. Middle Chalk — Zone of 
Micraster cortestudinarium : Chatham. The reverse surface 
of another specimen with long pinnules ; x 11 dia. 
Gamble Coll. [D. 3968.] 
