Sept.,j Hardy, AlgcB of the Zoological Gardens, Melbourne. 93 



yielded only a few diatoms and filaments of a fungus (Sapro- 

 iegniaceae). Moreover, neither A. quatermis nor other than 

 the cosmopohtan species of other genera mentioned have been 

 recorded for New Zealand. There remains the migrating 

 Spine-tailed Swift, which nests in Eastern Asia and visits 

 Australia. This bird is said to be seen only on the wing, and 

 to perch only in darkness. It has not been seen alighting near 

 any water whereto spore-laden dried mud might be trans- 

 ferred. Mr. F. Chapman, A.L.S., in the Victorian Naturalist, 

 vol. XX., p. 17, gave an interesting account of wind-borne 

 deposits precipitated as red rain, and analysis of the material 

 and reference to the meteorological data show this dust to have 

 come from far inland. See also the following : — Rept. Austr. 

 Assn. Adv. Sc, vol. vii., p. 334, and Jour, and Proc. Roy. Soc, 

 N.S.W., vol. xxxvi., 1902, p. 241. 



APPENDIX. 



List of Species identified, with Notes, and References to accompanying plate. 



Alg^. 

 Closterium Ehrenhergii, Menegh. [West and West, "Br. Desm.," vol, i., 



p. 143, PI. 17, figs. 1-4.] 

 Closterium moniliferum, Ehr. [Ibid., vol. i., p. 142, PI. 16, figs. 15, 16.] 

 Cosmarium Hardyi, G. S. West. Vict. Nat., vol. xxii., 1905, p. 72 ; 

 Journ. Linn. Soc, vol. xxxix., 1909, p. 64, PI. 4, fig. 8. 

 The foregoing species were found only in the fish-ponds. 



Pediastrum duplex, Meyen., var. reticulatum, Lagerh. 



P. Ehrenbergii, Corda. [Cooke, " Br. Fr.-Wr. Alg.," ii., PI. 18, fig. lA.] 



Scenedesmus quadricauda (Breb.), Ralfs, "Br. Desm.," 190, T. 31, f. 12, 



PI. v., fig. 3a, b, c. 

 S. quadricauda, f. minor, Ralfs. Ibid., fig. 12c. 

 S. obliquus (Turp.), Kutz. [G. S. West, " Br. Fr.-Wr. Alg.," p, 220, 



f. 92a], PI. v., fig. 4. 

 Cells average 16 jx. x 3.5 /i. ; pyr., 3.2 /<. 

 S. bijugatus (Turp.), Kutz. Ibid., p. 220, f. 92c. 



5. obliquus and 5. bijusatus varied considerably. 

 Ankistrodesmus falcatus (Corda), Ralfs, I.e., p. 180, T. 34, f. 3, 

 A. falcatus, var. acicularis (A. Br,), G. S. West, I.e., p. 223, f. 94??, c, 



PI. v., fig. 7. 

 A. quatermis, W. and G. S. West, Ann. Roy. Bot. Gard., Calcutta, vi., Pt. 



2, T909, PI. ii., figs. 23-25. 

 PI. v., fig. la-p, cell — length between apices, 13. 5-17 ^. ; breadth, 

 6.5-10 jx. ; thickness, 3.5 ju., there being greater approach to constancy 

 in breadth than in either of the other dimensions. The plant was never 

 seen quite as shown by Dr. West in his figure, but frequently approxi- 

 mating thereto. Often the cells were arranged with the mutual axis 

 of one opposing pair at right angles transversely to that of the other 

 pair (fig. lb). Nor was there ever a well-defined gelatine ; the straggling 

 of the cells into various positions, but always in fours, being probably 

 due to the semi-fluid nature of the colonial investment. 



Selenastrum acuminatum, Lagerh. Turn., " Fr.-Wr. Alg. E. Ind.," 

 p. 162, vol. XX., f. 30. 

 Without access to the original description, I am relying on the figure 

 given by Turner, who quotes Lagerh. and Wallich. Only one plant 



