40 
PEOBOSCINA. 
D. 3827. Two zoaria encrusting Echinocorys scutatus, with Membranipora, sp. 
Middle Chalk. Chatham. Gamble Coll. 
D. 3832. Two zoaria with the branching more regular than usual ; on echinid 
fragments. Middle Chalk. Chatham. Gamble Coll. 
D. 3800. Encrusting a fragment of Inoceramus, sp., with Micropora, sp.» 
and Membranipora, sp. Middle Chalk. Chatham. Gamble Coll. 
D. 3829. Encrusting an echinid fragment with Froboscina radiolitorum (Orb.), 
Middle Chalk. Chatham, Gamble Coll. 
D. 3830. Eleven zoaria, encrusting echinid and molluscan fragments. Middle 
Chalk. Chatham. Gamble Coll. 
D. 4160. Encrusting a shell fragment. Middle Chalk. Chatham. Gamble 
Coll. 
D. 3783. With Stomatopora granulata (Edw.), on Mxcratter corUitudxnar'xum. 
Middle Chalk. Chatham. Gamble Coll. 
D. 2940. With Stomatopora granulata (Edw.) and ‘ J/ar^inario ’ rihneri, Lonsd., 
on Echinocorys scutatus. Upper Chalk. Houghton. Dixon Coll. 
Foreign. 
? D. 3699. A zoarium encrusting the stem of a Spxropora verticillata (Goldf.). 
Cenomanian. Le Mans. Jesson Coll. 
e. Proboscina crassa (Rom.), var. elevata. 
Yahietal Characters. 
Zoarium comprising some "broad, multiserial tufts, which are 
Rerenicoid in character. 
Peristomes very much raised. 
Dimensions. 
Length of zooecia 
Diameter of zooecia 
Diameter of aperture ... 
Distribution. 
Middle Chalk : Chatham. 
B.M., D. 997. 
■5- 7 mm. 
• 15--2 „ 
• 05-1 „ 
Figures. 
PI. II. Fig. 6. Part of a zoarium, X 10 dia. Middle Chalk : 
Chatham. Yine Coll. D. 997. 
Affinities. 
This variety is characterized by the height of the peristomes, 
and the irregular Rerenicoid patches which occur at intervals. 
