304 
ADDENDA ET CORRIGENDA. 
SPARSICAVEA, d’Orbigny, 1853. 
Sparsicavea dichotoma (Goldf.). 
Vol. I. pp. 393-4, add to Synonymy : 
Multicresch laxata, d’Orbigny, 1854. Bry. Cret. p. 1077, pi. 800, figs. 10, 11. 
Heteropora dichotoma, Pergens, 1890. Rev. p. 373. 
And to localities : 
Sainte-Colombe, Mancbe. 
Vol. I. p. 397: 
6. marssoili, nov. nom. To Synonyms add: 
Ceriopor a dichotoma {non Goldfuss), von Hagenow, 1839. Mon. Riig. : N. Jahrb. 
1839, p. 282, pi. V. fig. 4. 
Fustulopora heteropora, Rbmer, 1840. Verst, nordd. Kr. p. 22. 
Eeteropora pxcstulosa, von Hagenow, 1850. In Geinitz, Quadersandsteingeb. 
p. 242. 
,, ,, BoU, 1852. Geogn. Mekl. : Arch. Ver. Naturg. Mekl. 
vol. vi. p. 64. 
,, ,, Kade, 1852. Los. Verst. Schanzenb. p. 20. 
When renaming Marsson’s species I did not recognize its probable identity with 
that which had been figured by von Hagenow in 1839 as Ceriopora dichotoma. 
The name proposed in 1899, however, stands, as all the specific names given 
to this species, viz., dichotoma, Hag., heteropora, Rbm., pustuloaa. Hag., and 
irregularis. Mars., are preoccupied by species of Sparsicavea. 
Add to Vol. I. p. 403 : 
CHORISTOPETALUM, Lonsdale, 1849. 
[Xotes on Foss. Zooph. : Quart. Journ. Geol. Soc. vol. v. p. 69.] 
Diagnosis. 
Petaloporidae erect, with the maculae few in number and 
irregularly distributed. Surface smooth, with lowly raised 
peristomes. 
The zoarium is dendroid, and consists of an axial bundle of 
long zooecia, surrounded externally, at least in the older 
parts of the zoarium, by a multilamellar layer; the zooecia 
at their distal ends bend nearly at right angles, and some 
of them are continued to the surface through the multilamellar 
layer as long sinuous tubes. 
Type Species. 
Choristopetalum impar, Lonsdale. Quart. Journ. Geol. Soc. 
vol. V. p. 69, pi. iv. figs. 5-11. Lower Greensand: Atherfield, 
Isle of Wight. 
