98 
OSCULIPOHID^. 
Aff. — This species was founded by von Hagenow, who gave a figure only of the 
reverse face ; but this agrees so precisely with the species subsequently well 
figured by d’Orbigny as Truncatula gracilis that I should have felt no doubt of 
their identity but for the action of Marsson. The two Bryozoa both agree in 
having long dichotomous branches with short alternate pinnules, Avhich are so 
crowded that they appear to overlap. They are both marked by raised longi- 
tudinal lines. Marsson, however, included Retepora striata, Hag., as a synonym 
of Osculipora iruncata, but these species appear decidedly distinct. 0. truncata 
has smooth stems, and the peristomal fasciculi, though crowded, are distinctly 
separated by short lengths of the stems, and tend to bend out almost at right 
angles to the stem. It appears, moreover, improbable that von Hagenow, who 
knew 0. truncata so well, should have made this mistake. Another interpre- 
tation of R. striata has also been accepted ; for it has been regarded by some 
collectors as Desmepora semicyliudrica, which is clearly distinct, as von Hagenow 
recorded it at the same time that he founded his R. striata. Homoeosolen 
occurs, but it is apparently rare in the Eiigen Chalk, where it is represented by 
the species founded by von Hagenow as R. costata, which is probably the same 
species as H. ramulosus. 
6. jellyae (Pergens), 1894. 
Syn. Truncatula jellycc, Pergens, 1894. Xouv. Bry. Cret. Limb. : Bull. Soc. 
beige Geol. vol. vii., Mem. p. 176, pi. viii. figs. 4, \a. 
Char. — Zoarium tufted, rising from a circular base with a slightly contracted 
short stem, from which rise about twelve to fifteeu radial fasciculi, the bases of 
which unite to enclose a central cup-shaped hollow. Some of the bundles branch 
dichotomously, and have a ridged and longitudinally striated upper surface. 
The apertures open along the upper edge or end of the bundles and also over 
the whole lower face, there being from four to seven rows on the outer lower side 
of each bundle. Apertures *1 x *18 to *2 mm. in diameter; those on the outer 
sides of the branches are somewhat lanceolate in shape. The zoarium is 
4-6 mm. in diameter. 
Distrib. — Senonian — Maastrichtian : Pauquemont, Limburg. 
Aff. — Either the base of a JDiscocytis, or of a Homoeosolen allied to H. virgulosus 
(cf. PI. II. Fig. 8). 
6. kirkpatricki (Pergens), 1894. 
Truncatula kirkpatricki, Pergens, 1894. Xouv. Bry. Cret. Limb. ; Bull. Soc. 
beige Geol. vol. vii., Mem. p. 177, pi. viii. figs. 5, 5a. 
Char. — Zoarium tufted, with an oval base, from which rises a narrow stem, 
which breaks up into about twelve fasciculi, which would form a long, narrow 
tuft. The fasciculi contain from ten to thirty-six zooecia and open above in 
triangular or oblong surfaces. The apertures on the outer sides of the branches 
are elliptical ; the apertures are *1 or *11 mm. x *14 to *18 mm. in diameter. 
Distrib. — Senonian — Maastrichtian: Pauquemont, Limburg. 
Aff. — This is probably the base of a zoarium or else a young zoarium. The 
upper surface resembles an Osculipora, but the figure of the outer sides of the 
branches (Pergens, op. cit. pi. viii. fig. 5a) shows that it is an Homoeosolen. 
