82 2 
Notes. 
forming the neck canal cell ( n . c. c.) of the archegonium, while the lower forms the central 
cell. The whole archegonium seems to have been almost ripe, but it had not yet opened. 
P i g. Lb, 
(X27S ) 
Fig. i a. Megaspore of L . Veltheimianum with prothallus. sp. c. = spore coat; p . = prothallus. 
Slide G. C. 1215. x 100. 
Fig. 1 b. Prothallus of Fig. 1 a. A = central cell; n.c. = neck cells; n.c. c. =neck canal cell. X275. 
From drawings by Mrs. D. H. Scott. 
The discovery of the archegonium in Lepidodendroji Veltheimianum still further 
accentuates the similarity between the gametophyte generation of this plant (and 
probably of other species) and that of the living Selaginella. 
W. T. GORDON. 
