198 "TERRA NOVA' EXPEDITTOX. 



Sub-Family ROTALIINAE. 

 PATELLIXA. Williamson. 



."lOfi. PdlcUina cornigata, Williamson. PL VII. lig. o. 



PalMina cnrrufialn. Williamson. 18.58, RFGB. ]). 46. |it. iii, figs. 86-89. 



Hcroii-Allrn and Earland. I'.Hl. rtr.. FKA. 19I.J. ]). G86. 



Stations 2-6, 26, 27. 31. 38, 45-48, 50, 53-55 (+ D.). 



Universally distributed except in the deep-water area. Typical, and often 

 abundant, the finest series in the Antarctic area, particularly at Stations 31, 

 38. 45 and 53. The Antarctic specimens are, as a rule, free from any very 

 high conical forms, .such as occur in the N.Z. area, notably at Stations 2, 3 

 and 6. At Station 6 a single fossil specimen. 



At Station 47 a very interesting specimen exhiljiting the formation of young 

 shells. The parent is of normal megalospheric type. Viewed from underneath, 

 it is seen that the whole of the chambers except the outer annular ring of 

 chamberlets have been absorbed, and the cavity is occupied Ijy a sub-globular 

 mass consisting of a large number of minute individuals. probal)]y thirty or 

 forty at least, each consisting of part of the initial spiral of the adult shell. 

 This mass of young projects considerably beyond the flat iiase. There is no sign 

 of any other adult shell having been attached ('" plastogamy "") as figured Ity 

 Schaudinn (S.. 1895. PF.. p. 181. fig. 0. p. 185). 



507. Patellina corrugata, var. annularis (Parker and Jones). 



Orhitolina annulark, Parker and Jones, 1859, etc., NF. 1860 (vol. vi.). \^]^. .30, ?,\. 

 Pnlcllina cornif/ata, Carpenter, Parker and Jones, 1862, ISF. p. 2."jO. jij. xiii. fiys. 10. 17. 

 Chapman, 1907. RFV. ]>. 1.34, pi. -x, fig. 7. 



Stations 2, 3. 



At these N.Z. Stations a few individuals referable to the very distinctive multi- 

 annular form which is such a prominent feature of the S. Au.stralian shore- 

 sands. In its most advanced development, as found in such sands, the variety 

 is very striking and hardly identifiable with the normal P. conuga/a. The N.Z. speci- 

 mens are smaller and much less distinctive, and at the same Stations other specimens, 

 representing transition-stages between this variety and the depressed scale-like 

 form of the type, occur. 



CYMBALOPOEA, Hagenow. 



50S. Cymhaloj'Kira poeyi (d'Orbigny). 



Rolalia squammosa, d'Orbigny. 1826, T^MC. p. 272, No. 8. 



Cyinbalopora poeyi, Heron-Allen and Earland. 1914, etc., FKA. 19] Tj, p. 087. 



Stations 2, 5, 6. 



A single very high-domed specimen of the original type of Rolalia squammosa, 



