HETEROPOEA, MULTICRESCIS. 
203 
19. tuberculata (d’Orbigny), 1854. 
Syn^. Nodicrescis tuhcrculata, d’Orbigny, 1854. Bry. Cret. p. 1066, pi. 800, 
figs. 8, 9. 
,, ,, Pergens, 1890. Kev. p. 375. 
Char. — Zoarium dendroid, with thick branches (15 mm. diameter) covered with 
crowded tubercles. Apertures crowded, with uniserial mesopores. 
Distrib. — Senonian; Saintes, Charente-Inferieure. 
Apf. — T he type, according to M. Pergens, is lost. This species is most nearly 
allied to H. edivardsi (de Lor.). 
20. non variabilis (d’Orbigny), 1853. 
Syn. Zonopora variabilis, d’Orbigny, 1853. Bry. Cret. p. 931, pi. 771, 
figs. 9-13. 
, ,, ,, Pergens, 1890. Eev. p. 374. 
Char. — Thin stems with irregularly scattered distant apertures. 
Distrib. — Senonian: France. 
Aff. — P robably a Sparsicavea. 
MULTICRESCIS, d’Orbigny, 1854. 
[Bry. Cret. p. 1073.] 
Synonyms. 
Millepora, pars, Passy, 1832. 
Heteropora, pars, Michelin, 1841 ; von Reuss, 1848; Ulrich, 1900; etc. 
Chcetetcs, pars, Michelin, 1846. 
Polytrema, pars, d’Orbigny, 1850. 
Ceriopora, pars, d’Orbigny, 1850; Morgan, 1882. 
Semimulticrescis, d’Orbigny, 1854, 
Peptomulticrescis, d’Orbigny, 1854. 
Diagnosis. 
Heteroporidae with a massive or branched zoarium, composed of 
successive thin layers of zooecia. 
Type Species. 
Multicrescis variabilis, d’Orbigny, 1854. Cenomanian: Le Mans. 
Aeeinities. 
This species differs from Heteropora by its multilamellar 
structure ; its relations to Heteropora are analogous to those of 
Reptomulticava to Ceriopora. 
D’Orbigny described and figured five Cretaceous species which 
he referred to Multicrescis, and he gave a list of eight species which 
he also assigned to it. He did not select any one as his type. 
