Farnie. — The Strticture of Amphibola crenata Marfyii. 85 



ovoid, and others again more or less rhomboidal. Examined under the 

 high power some exhibit fine circuLar striations. When treated with acetic 

 acid they dissolve, giving off large bubbles of carbon dioxide, which can be 

 plainly seen with the naked eye. 



Bibliography. 



BouviER, E., 1892. Sur I'orgamsation des Amphiboles, Bull. Soc. Pliilom. Paris, 8, 



vol. 4. 

 Cooke, A. H., 1895. Cambridge Xatural History, MoUusca. 

 COTTRET.L, A. J., 1911. Anatomy of Siphonaria obliquata (Sowerby), TraMs. N.Z. Inst., 



vol. 43, pp. 582-94. 

 HuTTON, F. W., 1879. Aim. Mag. Nat. Hist., ser. 5, vol. 3, p. 181. 

 HtTTTOK, F. W., 1882. Tranc. N.Z. Inst., vol. 14, p. 156. 

 Lang, A.. 1900. Lehrbuch der vergleichenden Avatomie. d. unrbellose Thiere (2nd ed.), 



Mollusca, by Karl Hescheler. 

 MacMunn, C. a., 1900. On the Gastric Gland of Mollusca and Decapod Crustacea, 



Phil. Trans. Roy. Soc, vol. 193b. 

 Naef, a., 1911. Studien z. generellen Morphol. d. Mollusken, in Spengel's Ergebnisse 



u. Forischrifte d. Zoologie. 

 Pelseneer, p., 1895. Hermaphroditism in Mollusca, Quart. Journ. Micr. Sci., vol. 37, 



p. 19. 

 Pelseneer, P., 1906. Mollusca, in Lankcster's Treatise on Zoology. 

 Perrier, E., 1897. Traite de Zoologie. 



QuoY and Gaimard, 1832. Voyage de V Astrolabe, vol. 2, p. 196 ; pi. 16, figs. 1-9. 

 .Schneider, A, 1902. Lehrbuch d. vergleich. Histologie d. Thiere, p. 570. 

 SuTER, H., 1913. Manual of the Neiv Zealand Mollusca, pp. 596-97, Wellington. 

 SuTER, H., 1915. Manual of the New Zealand Mollusca, Atlas of Plates, pi. 49, 



figs. 9, 9a, Wellington. 



Art. IX. — Contributions to a Fuller Knowledge of the Flora of New 



Zealand : No. 6. 



By T. F. Cheeseman, F.L.S., F.Z.S., Hector Memorial Medallist, Curator 



of the Auckland Museum. 



[Read before the Auckland Institute, 20th December, 191S ; received by Editor, 

 30th December, 1918 ; issued separately, 14th May, 1919.] 



I. Kanunculaceae. 

 The Genus C'altha in the Southern Hemisphere. 



A memoir bearing the above title, written by Captain A. W. HilL 

 Assistant Director of the Royal Gardens, Kew, has recently appeared in 

 the Annals of Botany (No. cxxvii, July, 1918). In this, Captain Hill main- 

 tains the subdivision of the genus into the two sections, Psychro]}hila 

 and Pojndago, proposed by de Candolle as far back as 1818, and shows 

 that the peculiar development of the leaf-auricles in PsychrophUa, which 

 includes the whole of the species found in the Southern Hemisphere, marks 

 off the section much more distinctly than the floral characters proposed 

 by de Candolle. Eleven species are included in the section, three of them 

 being described for the first time. Seven of the eleven are purely American 

 in their distribution, two of them advancing as far north as the Andes of 

 Ecuador or Bolivia ; the remaining five extending southwards into southern 



