112 Canadian Record of Science. 
have been replaced. I think it is also safe to consider the 
structure figured by Salter,’ but referred to by him as 
“rootlets with lateral tubercles,” as of the same nature. 
All of the bodies may be regarded, therefore, at least pro- 
visionally, as the fruit of Zosterophyllum. 
Finally, the remains so far submitted to us show that the 
plants were not strongly vascular, but that they were, on 
the other hand, very soft and herbaceous. 
The characters of this plant, so far as at present deter- 
minable, may be stated in the following terms: 
GENUS ZOSTEROPHYLLUM, 0. gen. 
Aquatic plants with creeping stems, from which arise 
narrow dichotomous branches and narrow linear leaves of 
the aspect of Zostera. Fruit, an ovoid or spherical spor- 
angium (?), produced on short pedicels, without subtending 
bracts, from a single axis, the whole forming a loose spike. 
Lower Devonian of Myreton, Scotland. Reid. 
Z. MYRETONIANUM, n. sp. Stem and branches, 2 mm. in 
diameter. Leaves linear, 1.5-2 mm. wide, often showing an 
inconspicuous veining. Sporangia, 2.5-4 mm. broad, round 
or ovoid. Superficial structure, none. 
In connection with the above, it may also be well to place 
on record the suggestion of Sir William Dawson that some 
of the narrow Zostera-like leaves described by him from 
Gaspé and Baie des Chaleurs, and provisionally referred to 
his species Uordaites angustifolia, may also belong to the 
‘genus Zosterophyllum as above described. Specimens in his 
collection would seem to corroborate this view. 
EXPLANATION OF PLATES. 
Plate I. 
Fig. 1. Fertile stem of ZosTEROPHYLLUM MYRETONIANUM, 
showing three fruit bodies. Natural size. 
Fig. 2. Fertile branch of LycopopiTEs Rerpi. . Natural 
size. 
1 Jn’l. Geol. Soc. XIV, Pl. V, figs. 7 a, b. 
