CLAUSA. 
413 
PI. XIII. Fig. 9. Part of a fusiform branch with a short hare 
end ; X 8 dia. Chalk : South of England. Toulmin Smith ColL 
D. 4564. 
PI. XIII. Fig. 10. Epper part of a zoarium with a bare distal 
end ; X 10 dia. : the figure is inverted. Middle Chalk : Chatham. 
Gamble Coll. D. 433. 
PI. XIII. Fig. 11. A branched zoarium with bare proximal 
end ; X 9 dia. Epper Chalk : Bromley. Simmons Coll. D. 2840. 
PI. XIII. Fig. 12. A thin branch with long, narrow, bare 
])i'oximal end ; X 10 dia. Middle Chalk: Chatham. Yine Coll. 
D. 2720. 
PI. XIII. Fig. 13. The distal end of a zoarium, with gonocyst; 
X 10 dia. Middle Chalk : Chatham. Gamble Coll. D. 437. 
Fig. 56. A transverse section, X 40 dia. Middle Chalk: Chatham. 
Fig. 57. A longitudinal section, X 12 dia. Middle Chalk : 
Chatham. D. 4568. 
Claum franeqana, Orb. Transverse and longitudinal sections. 
Affinities. 
The species differs from C. lieteropora by the well-developed 
areas without apertures. The narrow bare stems of this species 
occur at one or both ends of the branches. They are usually at the 
proximal end (as in D. 437) ; but their occurrence at the distal 
end is shown by D. 433 (PI. XIII. Fig. 10), in which the direction 
of the broken branch orientates the specimen. 
D. 4567. 
Fig. 56. 
Fig. 57. 
