184 
HETEEOPOEIDiE. 
Char. — Zoarium simple, subclavate ; laterally compressed. A few apertures on 
tlie upper part of the stem, but most of them situated on the upper surface. 
Apertures *2 mm. diameter, separated only by single lines of mesopores. 
Distrib. — Senonian — Campanian — Zone of Belemnitella mucronata : beds \vith 
Actinocamax mamillatm^ Balsberg, Sweden. 
2. Phincksi, Pergens, 1894. 
Syn. Fasciculipora Phincksi, Pergens, 1894. Nouv. Bry. Cret. Limb. : Bull. 
Soc. beige Geol. vol. vii., Mem. p. 175, pi. ix. 
fig. 6 (not 3 as misprinted). 
Char. — Simple, erect zoarium, which is somewhat club-shaped, as it consists of 
a short stalk and expanded head. The zoarium is 2 to 2-5 ram. in diameter 
and about 4 mm. high. The stem is marked by a vertical series of small round 
pores. On part of the head some of the apertures are large, and are 
surrounded by a ring of apparent mesopores ; but in places the apertures 
are nearly all of the same size. Pergens remarks : “ Je ne crois pas que ce 
soient des caxites intersquelettiques comme chez les Heteropora, mais leurs 
dimensions extremement variables les font regarder comme etant de meme 
nature que celles des Cerioporidse, c’est-ii-dire comme des zoecies jeunes eu 
voie d’accroissement.” 
Distrib. — Senonian — Maastrichtian : Petit-Lanaye, near Maastricht. 
Afp. — The afiinities are doubtful owing to the doubt as to the presence of 
mesopores. Otherwise the species seems nearlv allied to Fungdla dujardini, 
Hag. 
HETEROPORA, de Blainville, 1830. 
[Zooph. : Diet. Sci. nat. vol. lx. p. 381.] 
Stk-onymy. 
Millepora, pars,Jj 2 imouxo\\x, 1821; Fleming, 1828; Goldfuss, 1827. 
Ceriopora, ,, Goldfuss, 1827; Michehn, 1846; von Hagenow, 1851; etc. 
Spiropora^ ,, Defrance, 1827. 
Gricopora, ,, de BlaimoUe, 1830 and 1834. 
Monticulipora, pars, d’Orbigny, 1849. 
Polytrema, d’Orbigny, 1849. ' 
Crescis, d’Orbigny, 1854. 
Nodicrescis, d’Orbigny, 1854. 
non Heteropora, Marsson, 1887. 
Hetei'opora, pars, Pergens, 1890 ; Hennig, 1894 ; Ulrich, 1900. 
Diagnosis. 
Heteroporidae with a massive or branching zoarium composed of 
long zooecia, and not built up of successive distinct layers. 
Apertures and mesopores irregularly arranged. 
