388 
SPAESICATEA. 
D. 2706. 
D. 2698. 
D. 2707. 
D. 2756. 
D. 654. 
D. 2627. 
D. 4113. 
D. 2710. 
D. 697. 
D. 4876. 
D. 4878. 
D. 4696. 
D. 3743. 
A branched fragment of var. francqana (on slide). Middle Chalk, 
Chatham. Vine Coll. 
A silicified fragment (on slide). Middle Chalk. Chatham. Vine Coll. 
A branch in the form carantina, passing down to the less spiral form 
oi francqana {on slidie) . Middle Chalk. Chatham. Vine Coll. 
A Y -shaped branch of form francqana encrusted by Micropora^ sp. 
Middle Chalk. Chatham. Vine Coll. 
Two branches of the typical form (on slide). Middle Chalk. 
Chatham. Vine Coll., Xo. 41. Eecorded by Vine as Entalophora 
madrcporacea. 
Two worn fragments (on slide) . Middle Chalk. Chatham. Vine Coll, 
Two fragments (on slide). ISIiddle Chalk. Chatham. Gamble Coll. 
A Y -shaped specimen on parts of which the radial ribbing may be 
recognized : most of the specimen is in the tj-pical caranfina form. 
(On slide with fragment of Mid^e Chalk. Chatham. 
Vine Coll. 
A branch of typical, unribbed form caranfina (on slide). Middle 
Chalk. Chatham. Vine Coll. Recorded as Eetei'opora {Clausa) 
obliqua, Orb. 
Foreign. 
Two fragments (on slide). Turonian : Craie mameuse. Villardin 
Station. Purchased 1898. 
A branched fragment of var. francqana (on slide). Turonian : Craie 
tuffeau. Villardin Station. Purchased 1898. 
A thin branch in the stage analogous to the micropora form of 
S. heteropora. Seuonian : Craie de Villedieu. Luynes, Indre-et- 
Loire. Purchased 1898. 
A small fragment (on slide) . Senonian. L’ Arche de Leves. Gamble 
CoU. 
2. Sparsicavea wrighti, nov. 
Diagnosis. 
Zoarmm of tRin, cylindrical branches, which divide dichoto- 
monsly. Ornamented externally by delicate' radial and 
longitudinal ribs. At intervals along the stem the radial 
ribs disappear ; long, regular, longitudinal ribs are then 
well developed, and between them are numerous maculae, 
so that such areas of the stem resemble Fetalopora. 
Peristomes of medium height (in well-preserved specimens). 
Apertures large, spiral, or quincuncial, mostly regular in 
arrangement. 
Dimensions. 
Diameter of stem 
Diameter of zooecia 
Diameter of aperture ... 
D. 3277. 
•6-’ 7 mm. 
•18--25 „ 
D.2834. 
1 mm. 
•2--28 „ 
