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Show 1906.] ALCYONARIANS F R O M ZANZIBAR. 433 These specimens differ essentially from Z. lutkeni Wright & Studer in the following particulars :- (1) There is no distinct " irregular wavy line" on the branches. (2) The polyps are distributed all over the coenenchyma. (3) The spicules never exceed 0*19 m m . in length (in L. lutkeni up to 0*34 mm.). (4) The colour of L. lutkeni is a dull yellowish red. From L. crista Mobius they also differ in a few details :- (1) In L. crista there are numerous striations on the coenenchyma especially near the base, but these diminish in number in the younger branches ; in our specimen the striations are very faint. (2) The figures of spicules given by Mobius are not quite like those in our specimen, but the variation in the size and form of the spicules in the different parts of the colony which wTe have noted in detail has led us to disregard the minor differences. It may be that the spicules described and figured by Mobius were taken from the coenenchyma near the base. (3) The colour, both of the specimens themselves and of the spicules, shows a marked difference, but this does not justify their separation from L. crista. Locality. Cape Verde Islands. Previously recorded from Algoa Bay. LOPHOGORGIA LCTKENI Wright k Studer. This species is represented by a piece of a colony 295 m m . in maximum height and 105 m m . in width. It is branched in one plane, with the branches flattened in the plane of branching and marked by a distinct groove along both the flattened faces. The polyps are confined to the lateral surfaces of the branches and twigs; their verruca? are reduced to slight elevations of the general coenenchyma. The species is practically identical with the forms which we referred to L. lutkeni Wright k Studer (Ceylon Pearl-Oyster Fisheries Reports), and shows the same minor divergences from the type. Locality. Wasin, British East Africa, 10 fathoms. Previously recorded from Cheval Paar, Gulf of Manaar. Order V. STELECHOTOKEA. Section A. Asiphonacea. Family TELESTID^E. Telesto rupicola Miiller. „ arborea Wright k Studer. Family CG3LOGORGIID;E. Ccelogorgia palmosa Wright k Studer. ,, repens, sp. n. |