332 DISCOVERY REPORTS 



St. 190, 315 m. Two broken off specimens fall within the redescription of this species 

 by Lacaze-Duthiers, who had a suite of over 20 specimens. They are nearly round with 

 rather shallow calices, closed by a large number of columella-rods. The paU in each 

 number 12. The shape is cornute, and the polyp tissues extend for 3 to 4 mm. only 

 down the outside of the corallum. Septa I and II are equal and markedly more exsert. 

 The details of structure, especially of the pali, almost exactly resemble Lacaze-Duthiers' 



fig-7- 



Caryophyllia mabahithi Gardiner and Waugh. 

 'John Murray' Exp. v, 178, III 6 (1938). 



St. 182, 278 m., 3 specimens, one being dead and one with regenerated calice. 

 Caryophyllia sp. 



St. 279, 58-67 m., one specimen the shape and size of the last. It would seem to be 

 a stage in the growth of a form that will have 12 pali. 



Genus Turbinolia (Ed. and H.) 



Ed. and H., British Fossil Corals, xvi, 13-21 (1840); Ann. Sci. nat., ser. 3, pp. 235-40 (1848); 

 Cor. II, 60-65 (1857). 



Quayle, San Diego Sac. Nat. Hist, vn, 91-110 (1932). ^ 



The genus is best known from the Eocene and Oligocene, the only possible recent 

 species being T. corbicula Pour.^ dredged in the Gulf of Mexico from 100 and 220 fm. 

 and characterized as "perhaps fossil (?)". Most species are well illustrated and show a 

 tendency or an actual fusion of septa III to septa I ; in T. costata we suspect that Ed. and 

 H. in the Annales (p. 239) has confused the cycles of septa, their description in Cor. II, 

 64, omitting all reference to this matter. The European species show the primary septa 

 fusing with the columella, which ends in an upstanding column. The American species 

 have these septa rising higher and running into the columella, to the surface of which 

 they give a stellate appearance (cf. Quayle). The species below has a rather depressed 

 columella with no style, but the primary septa rise well above the level of the theca and 

 fall to their fusion with the columella ; it is thus almost intermediate between the two 

 groups. In all species there is a tendency for the septa of the last-formed cycle to be 

 represented at first only by their costal portions, a character especially marked in the 

 species below. 

 Turbinolia australiensis n.sp. (PI. XXI, figs, i and 2). 



Three specimens, 3-4 mm. high, nearly round with calices about 2 mm. in diameter, 

 were presented to the museum at Cambridge in 1 892 together with a collection of Polyzoa 

 dredged in or near Port Jackson, New South Wales. They have now been presented to 

 the British Museum. 



About 12 costae at the base, additional costae forming higher up and corresponding to 

 the new septa ; no special costae over the directives and all relatively smooth, thick and 

 well marked with deep intercostal valleys. 



1 See here for references to Vaughan and others up to date. 



2 Bull Mus. Comp. Zool. Harvard, v, 203 (1878). 



