20 FOJ,KE FOLKESON, MADREPORARIA 



5. The colony is a stalkecl cup witli a keel projecting into the cup; lamina thin, 

 diameter 20 cm. Heiglit of the colony 11 cm, that of the stalk 3,5 cm. 



Calices about 26 per 4 cm 2 , in concentric lines. Apertures round or elliptical, 

 1,5—2 mm, a little exsert över the surface of the colony, perpendicnlarly to it. 



Septa 20 on an average, somewhat granulated; they project distinctly into the 

 calice. Columella loosely spongious, little developed. The ridges of the coenenchyma 

 are short and thin and the furrows are relatively broad. 



Turbinaria patula (Dana 1848). 



Gemmipora patula Dana 1848, Zoophytes, p. 410. 



Turbinaria patula Bernard 189G (.3), p. 41, plates VIII, IX; XXXI, fig. 16. 



45 miles W. S. W. off Cape Jaubert, 3 sps. (nos. 1, 2, 3). 



Nos. 1 and 2 are relatively small (no. 1 has a diameter of 90 mm, no. 2 of 100 mm), 

 stalked and slightly cup-shajDed specimens; in no. 3, which is the largest onc, having a 

 diameter of 29 cm, the stalk is short and the lamina is somewhat folded. The calices, 

 average 3,75 — 4 mm in diameter, are perfectly round in the centres of the colonies; at 

 the margins they are slightly elliptical. The calices extend up to 3 mm above the sur- 

 face of the corallum. In nos. 1 and 2 there are 4 calices per 4 cm 2 , in no. 3 8 on the 

 same area. Septa almost equally developed, average 24 in number, in nos. 1 and 2 

 moreover a few of another cycle. Columella convex, spongious, not verv dense, rather 

 large. The coenenchyma with verv conspicuous furrows and ridges, the latter with 

 verv finely denticulate edges. 



Turbinaria peltata (Esper 1797). 



Madrepora peltata Esper 1797, Fortsetzungen, I, p. 27, plate XLIL 



Turbinaria peltata Bernard 1896 (3), p. 38, plates VI, VII, VIII; XXXI, fig. 15. 



42 miles W.S.W. off Cape Jaubert, 30.5.11, 70 feet, 1 sp. 



The colony is quite small, 20 x 20 mm; height 17 mm, from which fully half be- 

 longs to the stalk. The corallum forms a little cup, almost square, not folded; the 

 relatively verv thick margin has a few, elliptical, crowded calices, turned outwards and 

 with an average length of the longer diameter of 4 — 6 mm. 



Septa generally 24, almost equally developed; sometimes there may exist a few 

 septa of another cycle. They project verv slightly into the deep calice. The columella 

 foliate-spongious, convex, well-developed. 



Thougli the thickness of the margin and the appearance of the septa indicate that 

 the colony is a specimen of T. peltata (Esper), the undeveloped condition of the colony 

 does not allow of an absolutely indisputable identification; the specimen may thus be 

 a young colony of the nearly related species T. patula (Dana). 



The corallum resembles the specimen figured by Kent (20), p. 233. 



Turbinaria speciosa Bernard 1896. 



Turbinaria speciosa Bernard 1896 (3), p. 32, plates V; XXXI, fig. 6. 

 45 miles W.S.W. off Cape Jaubert. 



