no Mr. A. W. Waters on 



It seems as tliouj;h both in SpJiArophora and Baiopora 

 the zooeeia liave grown over tlie primary in all directions, 

 h\n\ this we see in Orbitulij>orae.cc<^nirica, Seg. (see page 92j, 

 and in O. peliolus. 



The ovicell of Spluerophora is large, round, raised, and open 

 in I'ront. 



Relerriug to the two specimens from Batesiord or jMnddy 

 Creek, it is well to recall the fact that llaswell mentions a 

 form with a flat base without giving it a name. The fossil 

 Ct'llepura sirratu, MaeG., also has a flat base and clearly 

 belongs to Spfiarophora. 



Loc. Holborii Island, Queensland (//.) ; Percy Island, 

 Queensland, 11 fath., sent by Haswell ; N.E. coast of 

 Australia, sent by Bri.zier; Soutii Australia [Maplestone) . 



Fiissil. Curdles Creek, S.W. Victoria; ]\It. Gambier; 

 Aiiiinga and liiver ^Murray Cliff (all A. IV. TT.), Schnapper 

 I'oint, Bird Rock, Corio Bay, \N auru Ponds (all MacG.), 

 Cape Otvtay, Spring Creek, Muddy Creek, Shelford, Fyans- 

 ford, Morninglon, Mitchell River (Muplestune). 



Orbitulipora e.vcenirica, Seguenza. (Text-figs. 2,«, b. c.) 



Orbitulipora e.vcentrica, iSe.:i:ueiiza, "Le Fonnaz. Tevz.,' Atti Eeale 

 Accad. dei Liucei, ser. '6, vol. vi. p. 130, pi. xii. li'^s. 22, 22 a 

 (1879); Xeiiaiii, ••'Jiri. iieofr. delle Calabrie," Pal. Ital. vol. vi. 

 p. 188, pi. x\ii. tigs. 15, It? (1900). 



Orlitulipora e.rcentrica, \nv. Jfahelltda, D'O.'isat & Xeviaui, "Coral, e 

 Uri. Neog. di Sardejriia," JjoU. Soc. Geol. Ital. vol. xv. p. 18 ^18!J7). 



I had -written a descri|)tiou of specimens from Mazzurega 

 as O. exceiitrica, nov., before remembering that Segm-nza 

 had described a species with this specific name, which, 

 although larger and with more zocEcia than the >Mazzurega 

 fossils, is apparently the same species. ^line aje about the 

 same size as Neviani's var. fiubelUita. There aie several 

 specimens from material colkcted Irom .Mazzurega, near 

 Funiane in the Veronese, N. Italy, sent to me by Professor 

 Parona. The age was considered Bartonian, Init is now 

 called Priabonian. The bilaminate depressed zoaria are 

 .small, about 2-3 ram. in diameter, witli a stalk (as it has 

 been called in O. peliolus), from which the zooeeia spread 

 out in fan-shaped form, more or less in rows. The stalk or 

 pedicle is for attachment, as is the case with the pits of 

 Baiopora and OrbituliporcB, and it sometimes gives a sub- 

 triangular appearance to the zoariura. 



The zooeeia are very distinct and rounded, as seen from 

 above, and in the j'ounger ones the aperture occurs about 

 the centre of the apparently nearly round erect zooeeia, 



