234 
EABIOPORIDJB. 
may be suggested that the genus should be accepted as used 
by Audouin. But this view has not been adopted, and appears 
unnecessary. Melohesia was founded by Lamouroux on one species, 
Melohesia pustulata, Lamx.,^ that grows attached to algae on the 
coasts of France. The original figure suggests that the Bryozoon 
is a Berenicea^ for neither the figure nor the description refers 
to that radial arrangement of the apertures which is the most 
conspicuous feature of Lichenopora and Discocavea. Moreover, all 
the apertures shown in Lamouroux’s figure are of equal size. 
Melohesia is therefore not the same as Discocavea. 
Bisporella of Gray was used by him in 1848- for a section of 
the genus Tuhulipora, including the species Tahulipora hispida 
(Flem.) ; he described it as being “orbicular, edge thin, tubes 
in radiating ridges.” But he did not use this name as that of 
either a genus or subgenus. It does not appear in that work in 
the list of genera and species (p. xiii), nor is it in the list of “ the 
families and genera proposed in this catalogue” (pp. 144-9). 
Gray’s name, therefore, does not date from 1848,^ but from its use 
in the form of Biscoporella by Busk in the “ Crag Polyzoa,” 1859. 
The Heteroporella of Busk (1859) was founded for two Crag species,, 
of which the first {H. radiata) is a typical Discocavea ; the second 
{H. parasitica) is a Meteropora. 
1. Discocavea irregularis (d’Orbigny), 1851. 
Synonymy. 
Lichenopora irregularis, d’Orbigny, 1851. Bry. Cret. pi. 615, tigs. 9-12. 
,, ,, Gamble, 1896. Cat. Bry. Chatham, p. 5. 
,, ,, Cauu, 1900. Bry. Tours: C.R. Assoc, tran^. Av. Sci. 
1899, p. 410. 
,, [Discocavea) irregularis, pars, Pergens, 1890. Rev. p. 382. 
Discocavea irregularis, d’Orbigny, 1854. Bry. Cret. p. 961. 
Radiopora francqana, d’Orbigny, 1854. Ibid. p. 997, pi. 782, figs. 3-8. 
Semimulticavea francqana {?) , Hamm, 1881. Bry. mastr. Ob. -Sen. i., Cycl. p. 41.. 
Actinopora collis, d’Orbigny, 1851. Bry. Cret. pi. 643, figs. 1-4. 
Unicavea collis, d’Orbigny, 1854. Ibid. p. 973, pi. 778, figs. 1, 2. 
^ J. Lamouroux. Expos, metb. Polypiers, 1821, pp. 45-6, pi. Ixxiii. 
figs. 17, 18. 
- .7. E. Gray. “ List of British Animals in the Collection of the British 
Museum. Pt. i. Centroniye or Radiated Animals,” 1848, p. 138. 
^ Gray used Discopora, Lam., in 1848, for a genus having the type species- 
Jj. verrucosa (Esper), one of the Cheilostomata. 
