[274] P. Fischer, Journ. de Conch. ix. p. 101.
[275] Bull. Mus. C. Z. Harv. xviii. p. 434.
[276] Pelseneer, Comptes Rendus, cvi. p. 1029.
[277] E.g. Kollmann, Zeit. wiss. Zool. xxvi. p. 87.
[278] Proc. Roy. Soc. 1873, p. 70.
[279] Griesbach (Arch. mikr. Anat. xxxvii. p. 22) finds haemoglobin in several bivalves, e.g. Poromya granulata, Tellinata planata, Arca Noae, and Pectunculus glycimeris.
[280] Trans. Roy. Soc. N. S. Wales, xxii. p. 106.
[281] Pelseneer, Comptes Rendus, cx. p. 154.
[282] Science, iv. p. 50.
[283] P. Fischer, Journ. de Conchyl. (3) xxvii. p. 201.