PROTEOMYXA. 921 



a nucleated cell rounded at one end, drawn out into a point at the other. The 

 rounded end may emit fine pseudopodia. It appears to feed on the leucocytes of 

 the sputum, and passes into a resting phase in which it is so curved that the two 

 ends touch or nearly touch each other. The other parasite, Schizogenes, inhabits 

 the coelome of certain Ostracoda and Cladocera. It is composed of a homogeneous 

 protoplasm and is non-nucleated. In size and shape it is very variable. The 

 smallest individuals are rounded discs. Its mode of reproduction is peculiar. A 

 split occurs in the protoplasm which slowly cuts off a portion. 



Heliozoon-like genera. Nuclearia, Cienkowski, A. M. A. i. 1865, p. 225-6, 

 = Heterophrys varians, F. E. Schulze, ibid. x. 1874, p. $>(>, Heliophrys variabilis, 

 Greeff, ibid. xi. 1875, P- 2 % > c ^ Leidy, 'Freshwater Rhizopoda of N. America,' 

 U. S. Geological Survey of the Territories, Washington, 1879, p. 243. Myxastrum 

 radians, Haeckel, J. Z. iv. 1868, p. 91 ; M. Liguricum, Gruber, Nova Acta, xlvi. 



1884, p. 505. Archerina, E. Ray Lankester, Q. J. M. xxv. 1885. Monobia, 

 Schneider, A. Z. Expt. vii. 1878. Myxodyctium, Haeckel, op. cit. p. 99. 



Monadineae. Zopf, Encyclopaedic der Naturwissenschaften, Breslau, ' Hand- 

 buch der Botanik,' iii. pt. 2, 1884 1 . 



M. zoosporeae-. Zopf, op. cit. pp. '115-31. Pseudospora maligna, Protomonas 

 amyli, Diplophysalis stagnalis, D. Nitellarum, Gymnococcus Fockei, Aphelidium 

 deformans. Zopf, ' Zur Morphologic und Biologic der niederen Pilzthiere,' Leipzig, 



1885. Colpodella pugnax, Cienkowski, A. M. A. i. 1865, p. 214. Protomonas 

 amyli, Cienkowski, op. cit. p. 213; P. Huxleyi, Haeckel, J. Z. vi. 1871, p. 29; 

 P. Spirogyrae, Fisch, Z. W. Z. xlii. 1885, p. 119. Diplophysalis (= Pseudospora) 

 Nitellarum, Cienkowski, op. cit. p. 213; D. (= P.} Volvocis, Id. ibid. p. 214. 

 Pseudosporidium, Brass, Biol. Studien, i. 1883-4, p. 70. Protomyxa, Haeckel, J. Z. 

 iv. 1868, p. 71. Plasmodiophora, Woronin, Pringsheim's Jahrbiicher, xi. p. 548. 

 Tetramyxa, Goebel, Flora, No. 23, 1884. 



M. azoosporeae. Zopf, op. cit. pp. 99-115. Vampyrella Spirogyrae, V. varia- 

 bilis, V. pendula, Leptophrys vorax, Zopf. ' Zur Morphologic,' &c., supra. Spiro- 

 phora (= Amoeba] radiosa, Auerbach, Z. W. Z. vii. 1855-6, p. 400; Biitschli, 

 Z. W. Z. xxx. 1878, p. 271; = Dactylosphaerium vitreum (?), Hertwig and Lesser, 

 A. M. A. x. 1874, Suppl. p. 55. Haplococcus, Zopf, Biol. Centralblatt. iii. 1883-4, 

 p. 673. Vampyrella Spirogyrae, Cienkowski, A. M. A. i. 1865, p. 218; Hertwig 

 and Lesser, op. cit. p. 61 ; Leidy, op. cit. supra, p. 253 ; V. pendula, Cienkowski, 

 op. cit. p. 221 ; V. variabilis, V.pedata, Klein, Botan. Centralblatt. xi. pp. 189, 204-8, 

 2 57~9j V. polyblasta, Sorokin, Grundziige der Mycologie, p. 495; V. Gomphone- 

 matis, Haeckel, J. Z. vi. 1871, p. 23. Leptophrys= Vampyrella vorax, Cienkowski, 

 op. cit. p. 223 ; Id. ibid. xii. 1876, p. 24 ; Z. cinerea, L. elegans, Hertwig and Lesser, 

 op. cit. p. 57 ; cf. Archer, Q. J. M. xvii. 1877, p. 345. Bursulla, Sorokin, A. Sc. N. 

 Botan. (6), iii. 1876, p. 40. 



Amoeboid genera. Boderia, Strethill Wright, Journal of Anat. and Physiol. i. 

 1867, p. 335. Gymnophrys, Cienkowski, A. M. A. xii. 1876, p. 31 ; cf. Archer, 



1 All or nearly all the genera and species are described in this work, some indeed only in it. 

 To certain genera and species references are given which may prove useful to those to whom Zopf's 

 work is inaccessible. 



