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262 ZYGNEMATACHAF.
PLATH IX
Zygnemopsis
Fig. I.—Z. stephensiae, two zygospores from Cape Colony, South
Africa. Figs. 2-3.—Z. iycngarii, zygos{X)res and aplanospores from Fyzabad,
India. Drawn from type material. Figs. 4-5.—Z. quadrata, zygospores
from Szechwan, China. After Jao. Figs. 6-7.—Z. splnicrospora, zygospores
from Fyzabad, India. After Randhawa. Figs. 8-9.—Z. lamellata, face and
lateral views of zygospores from India. Drawn from type material. Figs. 10-
II.—Z. transeauiana, aplanospores and vegetative cell trom Fyzabad, India.
After Randhawa. Figs. 12-15.—^- decussatu, vegetative cells, zygospores,
parthenospores, and aplanospores from Ilinois. Fig. 16.—Z. spiralis, group
of zygospores from Michigan. After Prescott. Fig. 17.—Z. jcrtilis, aplan-
ospores from South Africa. After Fritsch and Rich. Figs. 1H-21.—Z. pcc-
tinata, variations in chromatophores and aplanospores from Kentani, South
Africa. Fig. 22.—Z. hodgettsii, immature a|>lanospores from Stellenhosch,
South Africa. After Hodgetts.