MULTICAVEA, PYRLCAVEA. 
245 
3. ? lateralis, d’Orbignv, 1853. 
Syx. Mtdticavea latei’alis, d’Orbigny, 1853. Bry. Cret. p. 976, pi. 778, 
figs. 7-9. 
,, ,, Pergens, 1890. Rev. p. 384. 
Char. — The zoarium is dendroid, of cylindrical dichotomous branches. The 
apertures are represented as in irregular groups. The structure, according to 
d’Orbigny ’s section (fig. 9), appears cancellate ; but according to Pergens the 
specimen does not correspond with d’Orbigny’s figures. 
4. pustulosa, Hamm, 1881. 
Syx. Multicavea pustulosa, Hamm, 1881. Bry. mastr. Ob. -Sen. i., Cycl. p. 40. 
Char. — Zoarium slightly and irregularly branched. Branches short, cylindrical, 
conical, or club-shaped, ^^'ith knob-like elevations on the upper surface. 
Apertures very small, and thickly crowded ; the larger zooocia occur in rows of 
four or five, which are arranged regularly and radially from the middle of the 
knobs . 
Distrib. — Senonian — Maastrichtian : Maastricht. 
PYRICAVEA, d’Orbigny, 1853. 
[Bry. Cret. p. 974.] 
Diagnosis. 
lladioporidae with the zoarium dendroid ; of piriforrn sub- 
colonies, growing in vertical branched series, connected by 
short cylindrical stems. The apertures open in uniserial 
vertical series on slightly- raised ridges, separated by grooves 
with single series of cancelli. 
Type Species. 
Pyricavea francqana, d’Orbigny. Senonian : France. 
UNREPRESENTED SPECIES, 
francqana, d’Orbigny, 1853. 
Syn. Pyricavea francqana, d’Orbigny, 1853. Bry. Cret. p. 975, pi. 778, figs. 3-6. 
Lichenopora {Pyricavea) francq i.ua, Pergens, 1890. Rev. p. 382. 
Defraucia francqana, Bucaille, 1890. Bry. Cret. Seine-Inf. : Bull. Soc. 
Sci. nat. Rouen, vol. xxv. p. 509. 
Char. — From ten to fifteen apertures in each vertical series. Piriform sub- 
colonies, 2-4 mm. in diameter. 
Distrib. — Senonian — Maastrichtian : Meudon, near Paris ; also Seine-Inferieure 
{fide Bucaille). 
