HOMCEOSOLEN. CITIS, DISCOCrTIS. 
99 
? CYTIS, d’Orbigny, 1854. 
[Bry. Cret. p. 1046. Xamed after an island on the coast of Arabia.] 
Diagnosis. 
Osculiporidae with an erect zoarium and square stem. Apertures 
on all sides of the stem, and especially in raised groups along 
the sides of vertical projecting crests. 
Type Species. 
C. lanceolata, d’Orhigny, 1854. Senonian : France. 
Affinities. 
The affinity of this genus is somewhat doubtful, but from 
d’Orbigny’s figures it may be regarded as an Osculiporid in which 
the peristomal fascicles occur along vertical crests. 
UNREPRESENTED SPECIES, 
lanceolata, d’Orbigny, 1854. 
Syn. Cytis lanceolata, d’Orbigny, 1854. Bry. Cret. p. 1047, pi. 794, figs. 4-7. 
,, ,, Pergens, 1890. Rev. p. 385. 
Distrib. — Senonian — Coniacian : Joue and Tours, Indre-et-Loire. 
DISCOCYTIS, d’Orbigny, 1854. 
[Bry. Cret. p. 1061.] 
Synonyms. 
Pelagia, Micbelin, 1844. 
Jjefrancia, pars, Bronn, 1848. 
Diagnosis. 
Osculiporidae with a cupuliform zoarium, consisting of a flat 
base, a narrow peduncle, and a broad cup -shaped or funnel- 
shaped head, which is composed of numerous radiating bundles 
of zooecia. The outer surface is covered with pores ; the chief 
apertures are on the ends of the bundles; the upper surface 
is covered with epizoarium and longitudinal ridges. 
Type Species. 
Pelagia eudesi, 1844. Cenomanian: France. 
Affinities. 
This zoarium resembles Bicavea from its general shape and the 
occurrence of the bundles of zooecia opening on the upper margin 
of a circular cup-shaped head. The true affinities of the genus are 
no doubt with the Cytidae of d’Orbigny, a section of the Osculi- 
poridae. It may be regarded as an Osculiporid in which the 
