HOMCEOSOLEN". 
97 
2 . francqanus (d’Orbigny), 1854. 
Syn. Semicytis francqana, d’Orbigny, 1854. Bry. Cret. p. 1052, pi. 794, 
figs. 13-15. 
,, ,, Pergens, 1890. Eev. p. 386. 
Char, — Probably a young Eomoeosolen. 
Distrir. — Senonian: Carancy, Pas-de-Calais. 
3. falcatus (d’Orbigny), 1854. 
Syn. TInicytis falcata, d’Orbigny, 1854. Bry. Cret. p. 1048, pi. 794, figs. 8-12. 
,, ,, Pergens, 1890. Eev, p. 385. 
non ,, ,, Gamble, 1896. Cat. Bry. Chatham, p. 6. 
Char. — Zoarium erect, tufted; 30mm. wide and branches 4mm. in diameter. 
The branches are round below, and bear on the middle of the upper side 
a single series of pointed processes ; there are apertures on one side of these 
processes. 
Distrir. — Senonian : Meudon, near Paris ; Chateaudun, Eure-et-Loire ; 
Lavardin, Lisle, Vendome, and Villavard, Loir-et-Cher ; Joue, Luynes, 
Maune, St. Christophe, and Tours, Indre-et-Loire ; Bougniaux, Pecine, 
Peguillac, Perignac, Pons, Saintes, and St. Leger, Charente-Inferieure. 
Aff, — T his species is a Honueosolen, with single aperture-bearing processes on 
the middle of the upper surface of the branches instead of a double series, one 
on each side. 
4. striatus (von Hagenow), 1846. 
Syn. Retepora striata, von Hagenow, 1846. In Geinitz, Grundr. Verst, vol. ii. 
p. 591, pi. xxiiiR, fig. 3. 
Truncatula ,, von Hagenow, 1851. Bry. maastr. Kr. p. 25. 
,, truneata, pars, Marsson, 1887. Bry. Eiig. : Pal. Abh.vol.iv. 
p. 37. 
,, gracilis, d’Orbigny, 1854. Bry. Cret. p. 1059, pi. 798, figs. 1-5. 
,, ,, Canu, 1900. Bry. Tours: C.E. Assoc. frau 9 . Av. Sci. 
1899, p. 410. 
Char. — Zoarium of a few widely separated, dichotomous branches, which are 
usually thin, being about 1 mm. in diameter. The branches bear crowded, 
overlapping, alternate, lateral processes, which are short and strongly reflexed, 
and the reverse side of each pinnule is masked by conspicuous striations. As 
the sub-branches are mere short processes, only the tips are seen on the 
obverse side. 
Distrir. — Senonian — Maastrichtian : Meudon. 
Campanian : Eiigen. 
Santonian: ? Saintes, Charente-Inferieure. 
Coniacian : in the Craie de Villedieu at Vendome, Villavard, 
etc., Loir-et-Cher; Tours, Joue, Luynes, etc., Indre- 
et-Loire. 
H 
