166 Dr. H. Charlton Bastian on the 
PLATE XIII. 
Fig. 35. Bristle of the 1st foot of Onuphis quadricuspis, Sars. It is 
accidentally curved. » Zeiss oc. 2, obj. D. 
Fig. 36. 20th foot of the same. Enlarged. 
Fig. 87. Powerful winged and bifid hook from the posterior region of the 
same. X as before. 
Fig. 88. Bristle of the 1st foot of Onuphis near holobranchia, Maren- 
zeller. X as before. 
Fig. 39. 10th foot of the same. Magnified. 
Fig. 40. Foot (about 20th) of Eunzce from Cape Rosier. Enlarged. 
Fig. 41. Ventral bristles of the same. X as before. 
Fig. 42. Upper bristle of Zumbriconereis assimilis. X as before. 
Fig. 48. Winged hook of the same. as before. 
Fig. 48 a. Head and anterior end of the foregoing. Enlarged. 
Fig. 44. Anterior end of Drilonereis canadensis. Enlarged. 
Fig. 45. Upper bristle of the same. X as before. 
Fig. 46. 50th foot of the same. x 70 diam. 
VII.—On some Points in connexion with the ordinary Deve- 
lopment of Vaucheria Resting-spores. By H. CHARLTON 
Bastian, M.A., M.D., F.R.S., F.L.S. 
[Plate XIV.] 
COMPARATIVELY few persons have probably followed the 
development of the resting-spores of Vaucheria, owing to the 
length of time they remain in a dormant condition. I have 
long been familiar with these bodies and with various changes 
that are from time to time apt to occur therein, but until the 
summer of 1901 I had never seen them germinate and give 
rise to young Vaucheria plants. 
The only description of their germination that I have been 
able to find is that given by Pringsheim*. He says:—“‘ The 
spore remains for some time longer, without being thrown off 
from the parent tube on which it was produced; but the 
colour of its contents, which was at first green, gradually 
becomes paler and paler; the spore is at last rendered quite 
colourless and presents in its interior only one or more largish 
dark brown bodies. When it has lost all its colour it is 
detached from the parent tube in consequence of the decay of 
the membrane of the sporangium enclosing it. After some 
* “On the Impregnation and Germination of Alge.”’ Translation in 
Quart. Journ. Microsc. Science, 1856, p. 63, pl. iii. figs, 17-20, The 
figures, a8 reproduced in the Journal, and as copied in Cooke’s ‘ British 
Freshwater Algze,’ are very crude, aud even erroneous in several respects ; 
this is especially the case with fig. 17. 
