100 
OSCULIPOKID^. 
branches are short and numerous and coalesce laterally to form 
a cup-shaped zoarium. Among the species of Homceosolen it most 
resembles H, falcatus (d’Orb.). The zoarium has some resemblance 
to the Supercytis stage of Homceosolen^ but in mature zoaria the 
zooecial bundles of Biscocytis project but a short distance above the 
disc and do not grow into a much branched frond. 
The discoid zoarium is often similar in shape to that of Bisco- 
fascigera ; but in that genus the apertures are terminal, whereas 
in Biscocytis, in addition to the terminal apertures, others are 
spread over the whole outer face of the zoarium. 
1. Discocytis eudesi (Michelin), 1844. 
Synonymy. 
Pelagia eudesi, Michelin, 1844. Icon. Zooph. p. 123, pi. xxxii. lig. 5. 
,, ,, Michelin, 1846. Ihid. p. 204. 
,, ,, d’Archiac, 1846. Form. cret. vers. Plat, centr. : Mem. Soc. 
geol, France, ser. 2, vol. ii. p. 78. 
,, ,, d’Orhigny, 1850. Prod. Pal. vol. ii. p. 175. 
JDefranceia eudesi, Bronn, 1848. Ind. Pal. p. 405. 
Biscocytis ,, d’Orhigny, 1854. Bry. Cret. p. 1062, pi. 798, figs. 10-17. 
,, ,, Pergens, 1890. Kev. p. 386. 
non ,, ,, Gamble, 1896. Cat. Bry. Chatham, p. 6. 
,, ,, Ulrich, 1900. In Zittel- Eastman, Textbook Palinont. vol. i. 
p. 265, fig. 426. 
Pelagia infundibulum, Michelin, 1844. Icon. Zooph. p. 205, pi. lii. fig. 1. 
,, ,, d’Orbigny, 1850. Prod. Pal. vol. ii. p. 175. 
Befranceia ,, Bronn, 1848. Ind. Pal. p. 405. 
Pelagia insig>ds, Michelin, 1844. Icon. Zooph. p. 205, pi. lii. fig. 2. 
Befranceia ,, Bronn, 1848. Ind. Pal. p. 405. 
Diagnosis. 
Zoarium with a small flat base and a narrow, short stem ; the 
upper part is hollow and funnel-shaped. The upper surface 
is crossed by about twenty-five to thirty radial bundles of 
zooecia, and the upper edge of each bundle is a prominent 
median crest. The bundles dichotomize occasionally. 
Apertures in sub-elliptical groups on the tooth-like projections 
around the rim of the zoarium. 
Dimensions. 
Diameter of the zoarium 12 mm. 
Height 7 ,, 
Distribution. 
Cenomanian : Le Mans and Bellesme, Sarthe ; Tillers, Calvados ; Taches 
Xoires ; Sainte-Croix, France {fde d’Archiac). 
