356 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Fnraminifera. 



Discorbina bertheloti, d'Orbigny sp. 



Rosalina bertheloti d'Orbigny, 1839, Foram. Canaries, p. 135, pi. i, 

 figs. 28-30. Discorbina bertheloti, d'Orb. sp., Flint, 1899, Rep. U.S. 

 Nat. Mus. for 1897, p. 327, pi. Ixxii, fig. 4. 



Distribution. — Widely distributed. Brady records the most southerly locality 

 at the south-east corner of Australia. 



Present Occurrence. — 01! the Snares ; 60 fathoms ; very rare. Ten miles north 

 of Enderby Island ; 85 fathoms ; common. 



Discorbina bertheloti, d'Orb. sp., var. baconica, Hantken. 



Discorbina baconica, Hantken, 1875, Mittheil, Jahrb. d. k. Ung. Geol. Anstalt, 

 vol. iv, p. 76, pi. X, figs. 3 a, b. D. bertheloti, d'Orb. sp., var. baoonica, 

 Hantken, Brady, 1884, Rep. Chall., vol. ix, p. 651, pi. xc, figs. 1 a-c. 



Distribution. — This variety, which was described from a Tertiary fossil example, 

 has been recorded only from two localities, in the North Atlantic. 



Present Occurrence. — Ten miles north of Enderby Island ; 85 fathoms ; rare ; 

 small. 



Discorbina araucana, d'Orbigny sp. 



Rosalina araucana, d'Orbigny, 1839, Foram. Amer. Merid., p. 44, pi. vi, 

 figs. 16-18. Discorbina araucana, d'Orb., sp., Brady, 1884, Rep. Chall., 

 vol. ix, p. 645, pi. Ixxxvi, figs. 10, 11. 



Distribution. — Brady states that this form and the nearly related D. vilardeboana 

 " occurs in shallow water at almost every latitude from the shores of Japan to 

 Kerguelen Island, and the coast of Patagonia." 



Present Occurrence. — Off the Snares ; 60 fathoms ; one example. 



Discorbina parisiensis, d'Orbigny sp. (Plate XVII, figs. 6, 7.) 



Rosalina parisiensis, d'Orbigny, 1826, Ann. Sci. Nat., vol. vii, p. 271, No. 1 ; 

 modele No. 38. Discorbina parisiensis, d'Orb. sp., Egger, 1893, Ab- 

 handl. k. bayer. Akad. Wiss., cl. ii, vol. xviii, p. 391, pi. xv, figs. 25-30. 



This is the commonest species of the genus in the present material. More than 

 50 per cent, of the specimens are in the condition of plastogamic conjugation, forming 

 " double specimens " ; as also exemplified in D. tabernacularis and D. pileolus. Our 

 shells are generally more conical than the usual type of D. parisiensis, and in this 

 they resemble the tests of D. pileolus. The retrorse form of the sutures, however, 

 show this form to be referable to D. parisiensis. 



Distribution. — The " Challenger " obtained it from Kerguelen Island, and it 

 has also occurred off the coast of Ireland (Wright), and the Atlantic shores of France 

 (Berthelin). Egger obtained it from Kerguelen, the Mauritius, between New Amster- 

 dam and Australia, and off Western Australia. 



Present Occurrence. — North-east of Bounty Island ; 50 fathoms ; common. 

 Off the Snares ; 60 fathoms ; vary common. Twenty miles north of Auckland 

 Island ; 85 fathoms ; frequent. Ten miles north of Enderby Island ; 85 fathoms ; 

 very common. 



