Went. — Notes on Sugar-cane Diseases. 599 
conidia and the Melanconium - stylospores belonging to the 
same fungus is insufficient. 
8. The Melanconium which is found on dead canes in Java 
is no parasite ; it lives only on canes which are already dead. 
It follows from this that the Melanconium from Java is 
perhaps different from that in the West Indies. 
9. The stylospores of the Java Melanconium give rise, on 
germination, to a mycelium producing large black spherical 
conidia ; these conidia placed on dead canes give again rise 
to the formation of the pycnidia of Melanconium. 
Kagok-Tegal, October , 1895. 
EXPLANATION OF FIGURES IN PLATE XXVI. 
Illustrating Professor Went’s paper on Sugar-cane Diseases. 
Figs, i— 1 1. Colletotrichum falcatum. 
Figs. 1-3. ~p. Mycelium with chlamydospores (g). Figs. 1 and 2 thechlamydo- 
spores at the top of a hypha, Fig. 3 in the middle. Of the cell-contents only the 
oil-drops have been drawn. 
Fig. 4. ~. Stroma (str.) with hairs and conidia (<:). 
Figs. 5, 6. ^p. Young hairs from a stroma ; at their bases are basidia, having 
formed in one case a conidium c. 
Fig. 7. -S-p. Three different stages a , b, c in the formation of conidia on the top 
of the basidia. 
Fig. 8. ^p. A conidium. 
Fig. 9. ^p. Three differently-shaped conidia. 
Fig. 10. -p. Mycelium giving off short branches which will produce the basidia. 
Fig. 11. -2p. Germinating conidia ( c ) ; a, one germ-tube is developing; b and c , 
with germ-tubes on both ends of the conidia. 
Figs. 12-22. Thielaviopsis ethaceticus . 
Fig. 12. ~p. Macroconidia germinating. 
Fig. 13. -p- Branch of the mycelium with a chain of six macroconidia. 
Fig. 14. ~p. Chain of three macroconidia with large oil-drops in the interior. 
Fig. 15. -sp. Chain of six macroconidia not yet fully grown, with very slightly 
coloured cell-walls and small oil-drops, so that the vacuoles are distinctly visible. 
Fig. 16. ^p. Successive stages of development of macroconidia: a, one conidium 
is visible; b, one and a-half hour later, under the first conidium, which has 
increased in size, a new one is developed ; c, three hours later, a third and fourth 
conidium begin to develop ; the first conidium becomes slightly coloured. 
