PEOBOSCrN’i.. 
55 
b. Proboscina bohemica, Xot., var. chathamensis 
(Yine). 
Synoxymt. 
Tuhulipora chathamensis, Vine, 1893. Compl. Rep. : Rep. Brit. Assoc. 1892, 
p. 308. 
Varietal Cha.racters 
Zoarium of long, irregular branches, with a narrow marginal 
selvage at the same height as the rest of the zoarium. 
Surface strongly corrugated. 
Peristomes well raised ; very irregular in distribution. 
Distribution. 
England : 
Middle Chalk : Chatham. 
Figures. 
PI. III. Fig. 1. An irregular zoarium of var. chathamensis. 
Middle Chalk: Chatham. Fig. \a, the zoarium, natural size; 
Fig. IJ, part of the same, x 10 dia. Gamble Coll. D. 2978. 
LIST OF SPECIMENS. 
D. 2978. "With Stomatopora gramdata (Edw.) and Micropora, sp., on 
fragment of Ech'inocorys. Middle Chalk. Chatham. Presented 
by AV. Gamble, Esq., 1889. Figd. PI. III. Fig. 1. 
D. 996. On echinid fragment (on slide). Middle Chalk. Chatham. Vine Coll. 
The t)'pe of Tuhulipora chathamensis, Vine, 1893 : op. cit. p. 308. 
The zoarium consists of broad bands which expand slightly. 
D. 3819. A zoarium encrusting an echinid fragment (on slide). Middle 
Chalk. Chatham. Gamble CoU. 
D. 3862. Encrusting an echinid fragment. A thick zoarium with well raised 
peristomes, with Proboscina fasciculata (Rss.), var. toucasi (Orb.), 
on slide. Middle Chalk. Chatham. Gamble Coll. 
D. 3867. Encrusting a fragment of Echinocorys (on slide). Middle Chalk. 
Chatham. Gamble Coll. 
? D. 3869. The worn central part of a zoarium with distant apertures, encrusting 
a fragment of Echinocorys (on slide). Middle Chalk. Chatham. 
Gamble Coll. 
D. 3866. Encrusting an echinid fragment, with Proboscina fasciculata (Rss.), 
var. toucasi (Orb.), and Micropora, sp. Middle Chalk. Chatham. 
Gamble Coll. 
