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Show 1876.] AND LITTORAL CORALS. 439 which are placed before the tertiary septa in perfect systems. Fissi-parity is common in the terminal calices, and they present short broken series. There is no epitheca. Endotheca tolerably abundant. This genus differs from Cladocora in having no epitheca, in the fissiparous division, and in the thickness of the walls. It is distinguished from Pleurocora, to which it is more closely allied than to any other genus, in its general shape and the fissiparity of the terminal calices ; and it is separated from Goniocora by having pali. DENDROCORA FISSIPARA, sp. n. (Plate XL. figs. 5-7) The corallum is small and bushy, the branches being slender ; the terminal calices are elongate, and undergo fissiparity by the division of the calice by a large septum. Ordinary calices are round, shallow, with exsert septa, very granular, in vertical lines, and slightly incised; and the columella has an open reticulated form, with processes centrally, and pali at the side. Septa in 6 systems, and usually three cycles in each, a fourth never being complete. The pali are before the third septa. The costse are broader than the septa at the calice, and are sharply granular and very distinct. Height of coral 2 inches. Breadth of ordinary calice fe inch, of a series T 4 0- inch. Locality. Off Bonito, West Africa. 4| fathoms. Liverpool Museum. Division ASTRANGTACE^E. ASTRANGIA MINUTA, sp. n. (Plate XL. fig. 8.) The base is larger than the centre ; and the costse are moderately developed. The calice is very open and shallow ; the columella is well seen, and consists of papillse which resemble those of the smaller septa. The corallite is very short; and there are three complete cycles of septa, which are short, granular, unequal, arched, and slightly excised. Breadth of calice fe inch. Height of corallum -fe inch. Locality. On a reef-coral from the shores of San Domingo. ASTRANGIA EPITHECATA, sp. n. (Plate XL. fig. 9.) The corallum is short, the calices open and shorter than the base ; the fossa is shallow ; and the epitheca comes to the margin. The columella is small, being formed by a circle of trabeculse joining the septal ends. Septa wide apart, unequal, usually long, and in three cycles. Breadth of calice -^ inch. Height of covnllum fe inch. Locality. On West-Indian recent reef-coral. A group of corals associated with several little Brachiopods of the genus Krausia (probably a variety of Krausia persicum), from Port Natal, in South-eastern Africa, presents some interesting results to a careful investigation. The corallites have the aspect of the genus Cylicia, Dana, as they are crowded, spring from a basal expansion, have a well-marked epitheca, deep fossse, and the septal edge concave. At first sight the whole would be associated with |
