phoe:mopoea. 
371 
€har. — Branches cylindrical or slightly compressed. Bows of apertm-es 
extending across the whole side of the branch. Macula} abundant. 
Distrib. — Senonian — Maastrichtian : Meudon ; Saint-Germain, near Paris; 
Yeules, Seine- Inferieure. 
Aff. — This species is rei^arded by Pergens as a sjmonym of Retecava canceUata, 
from which it appears to differ by the greater development of maculte and the 
extension of the rows of apertures across the whole width of the sides of the 
branches. 
Some confusion has been caused by mistakes in d’Orbigny’s descriptions of his 
pi. 772 ; the references in the text and on the plate do not correspond. The 
foUo-snng list gives the two sets of names, and what is probably the correct 
explanation of the plate : — 
PI. 772. Beference on Plate. In text. 
Figs. 11,12. Laferocavea punctata. Semicellaria ramosa. 
,, 13, 14. Semicellaria ramosa. Semicellaria ramosa. 
,, 15, 15 
dup. 
16. 
17. 
18. 
Semicellaria ramosa. Lateroeavea punctata. 
Semicellaria ramosa. Lateroeavea punctata. 
Reteporidea royana. Lateroeavea punctata. 
Fig. absent. Reteporidea royana. 
Probable correct 
reference. 
Lateroeavea punctata. 
Semicellaria ramosa. 
Lateroeavea punctata. 
Semicellaria ramosa. 
Reteporidea royana. 
Fig. absent. 
6. ramosa (d’Orbigny), 1851. 
Syx. Reteporidea ramosa, d’Orbiguy, 1851. Bry. Cret. pi. 608, figs. 6-10. 
,, ,, d’Orbigny, 1853-4. Ibid. p. 937, pi. 773, figs. 1-3. 
Llornera ,, Pergens, 1890. Bevision, p. 353. 
€u vR. — Zoarium infundibular, but not reticular; the brauches are dichotomous 
and crowded, aud subtrigoiial in transverse section. Apertures in three 
transverse series ; a median row alternating with two lateral rows ; in places 
the plan is confused. 
Distrib. — Senonian — Maastrichtian : Boyan and Bongniaux, Charente - 
Inferieure ; Meudon ; Sainte-Colombe. 
PHORMOPORA, ^larsson, 1887. 
[Bry. Biig. : Pal. Abb. vol. iv. p. 32.] 
Diagnosis. 
HornericlsB tvith cylindrical, didiotomous branches ; the apertures 
are scattered irregularly over the obverse face and not in 
regular transverse rows. 
The reverse face is marked by small or well-developed tubuli. 
