ENTALOPHOEA. 
243 
Figure. 
PI. XI. Fig. 12. A part of a zoarium with two gonoecia; 
X 10 dia. ^licldle Chalk : Chatham. Gamble Coll. D. 416. 
Affinities. 
The reference of these Chatham specimens to d’Orbigny’s species 
Vincularia cretacea is open to some doubt. It was suggested 
by Vine, whose specimens thus labelled are in the Collection. 
That they are Entalophorids, and not Cheilostoraata, appears 
unquestionable. They have a typically Cyclostomatous gonoecium, 
and the whole character of the zooecia agrees with that of 
Entalophorids. That Vine was right in his specific reference 
appears probable. In the lower part of the stems the apertures 
are arranged as shown in d’Orbigny’s figure ; above, the apertures 
are less crowded and irregularly spiral. 
LIST OF SPECIMEXS. 
British. 
D. 416. 
D. 2735. 
D. 4354. 
D. 2775. 
D. 637. 
D. 4486. 
D. 4488. 
D. 4068. 
J). 3987. 
D. 455. 
A zoarium with two gonoecia. Middle Chalk. Chatham. Gamble 
Coll. Figd. PI. XI. Fig. 12. 
A branched zoarium. Middle Chalk. Chatham. Vine Coll. 
An irregular zoarium. Middle Chalk. Chatham. Gamble Coll. 
Two tragments (on slide). Middle Chalk. Chatham. Vine Coll. 
One specimen is a regular variety, and the other a doubtful 
specimen. 
A fragment (on slide) of an irregular variety. Middle Chalk. 
Chatham. Vine Coll., No. 111. Specimen recorded by Vine as 
Vincularia cretacea\ Eep. Brit. Assoc. 1892, p. 315. 
An isolated fragment (in tube). Middle Chalk. Chatham. Vine Coll. 
A similar specimen. Middle Chalk. Chatham. Vine Coll. 
Two specimens, each with a gonoecium ; on slide with Crisina {Tervia) 
suhgracilis, Orb. Middle Chalk. Chatham. Gamble Coll. 
Three branches (on slide). Middle Chalk. Chatham. Gamble Coll. 
The smallest specimen agrees very closely with d’Orbigny’s type. 
Three branches (on slide) . Middle Chalk. Chatham. Gamble Coll. 
Foreign. 
D. 4693, D. 4695. Two branches (on slide). Turouian: Craie marneuse. 
St. Rimay, Loir-et-Cher. Purchased 1898. 
D. 4701, D. 4723. Two branched fragments, of which the former has the 
apertures crowded as in d’Orbigny’s type (on slides). Turonian: 
Craie marneuse. St. Bimay, Loir-et-Cher. Purchased 1898. 
B. 4722. Two tragments (on slide). Senonian: Craie de Villedieu. Luynes, 
Indre-et-Loire. Purchased 1898. 
B. 4722. 
