PROTHALLI OF PINUS SYLVESTRIS. 255 
prothallus is represented might be suggested. Above the 
archegonium at a, there is indication of a line of separation 
which would pass below the body marked @,, which may be an 
archegonium also, and if so it is altogether out of place as a 
product of the prothallus bearing @,. Upon this and other 
points I do not dwell further at present. An examination of 
more material will enable me, I hope, to say more on another 
occasion, 
EXPLANATION OF THE FIGURES IN PLATE 
XLIX 
Illustrating Miss Bartholomew’s Paper on ‘‘ Abnormal Prothalli of 
Pinus sylvestris.” 
Fic. A. Ovule in longitudinal section. @, @,, archegonia. 5, 5, line of separa- 
ion of prothalli. 
Fic. B. Ovule in longitudinal section. a, a,, archegonia. a@,, probably another 
archegonia. 5, Sg Sy, lines of separation of prothalli. 
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