INYEKSAKIA. 
357 
IJ]S''REPIIESEXTED AXD DOEBTFUL SPECIES. 
1. dichotoma (von Renss), 1846. 
Syn. Escharites dichotoma, von Eeiiss, 1846. Verst, bolim. Kr. p. 66, pi. xv. 
fig. 31. 
,, ,, von Hageuow, 1850. In Geinitz, Quadersandst. 
p. 244. 
,, ,, Fric, 1870. Pal. Stud, bohni. Kr. : Arch, naturw. 
Landesf. Bobni. vol. i. pt. 2, p. 197. 
,, ,, von Renss, 1874. Bry. ob. Plan. : Palaiontogr. 
vol. XX. pt. 2, p. 135, pi. XXV. fig. 8. 
Char. — Thick cylindrical stems, with irregularly quinciiucial, piriform to 
hexagonal zooecioB. Apertures oval or with the lower margin flattened. 
Distrib. — Turonian : Strehlen, Saxony, in Upper Planer. 
Cenomanian ; Drahomischal, near Postelberg, and Zalabi, Bohemia. 
2. ramosa, von Hagcnow, 1850. 
Svx. Ceriopora milleporacea' von Hagenow, 1839. l\Iou. Riig. : jST. Jahrb. 
p. 282. 
Inversaria ramosa, von Hagenow, 1850. In Geinitz, Quadersaudst. p. 244. 
,, ,, von HagenoAV, 1851. Bry. Maastr. Kr. p. 59. 
,, ,, Oswald, 1890. Bry. IMeckl. : Arch. Ver. Mecklenb. 
vol. xliii. p. 105. 
Char. — A n Inversaria with very deeply sunken apertures and the zooecia 
externally bounded by furrows. 
D 1 .STRIB. — Senonian — Campanian : Riigen. 
3. royana (Waters), 1891. 
SvN. 2Ielicertites royana, ~W 2 LiQX?,, 1891. Chil. Char.: Ann. Mag. Rat. Hist. 
ser. 6, vol. viii. p. 51, pi. vi. figs. 2, 4, 5, 6, and 11. 
Char. — Branches stout, with one external layer round a thick axial bundle. 
Zooecia externally lozenge -shaped, bounded by ridges with a tubercle at each 
angle. Apertures semicircular. Avicularia with the aperture transverse, 
slit, and large mandibular depression. 
Distrib. — Senonian — Maa.strichtian : Royan. 
