Notes . 
327 
Lagenostoma Kidstoni sp. nov. 
The first species, for which the name Lagenostoma Kidstoni is proposed in 
honour of Mr. R. Kidston, F.R.S., to whom I am indebted for information respecting 
the specimens, was obtained many years ago from the Lower Coal Measures at 
Swinhill Colliery, Stonehouse, Lanark. There are two specimens showing these 
seeds, one of which is in the British Museum (Nat. Hist.), and the other in the 
Hunterian Museum, Glasgow. 
The seed, L. Kidstoni, is of the radiospermic type, and measures on an average 
about 6 mm. in length, and 2-5 to 3 mm. at its greatest width. The integument, at 
the apex of the seed, is divided into several short, blunt lobes, which appear to be 
usually six in number. The seed is slightly ridged longitudinally, the number of 
ridges probably corresponding to the number of apical lobes. In point of size and 
in its general morphology, L. Kidstoni agrees fairly closely with L. physoides , Will. 
A large number of these seeds have been examined, and in every case they have 
proved to be naked. In only one instance has any organ been observed which could 
be regarded as of the nature of a ‘ cupular ’ investment, similar to that of L. Lomaxi, 
and here it does not obviously subtend the seed. 
The seeds are in nearly every instance detached. Associated with them are 
several long, naked rachis-like structures, which correspond somewhat closely with 
portions of certain highly-compound fronds of the Sphenopteris type. In one 
particular case several seeds may conceivably be still attached to what is probably 
the termination of one of the finer branches of these axes. If this specimen is 
rightly interpreted, there would appear to be some evidence, though not as conclusive 
as one could wish, for the provisional view that these seeds were borne sessile on the 
terminations of the finer branches of a foliar organ probably of the Sphenopteris 
type. 
Lagenostoma Sinclairi, Kidston MS. 
For the loan of these specimens I am indebted to Mr. Kidston, who has 
recorded them, and has since proposed in MS. the specific name Z. Sinclairi. They 
were obtained from the Lower Coal Measures at Grange Colliery, Kilmarnock, 
Ayrshire. 
These specimens are particularly interesting, since many of the seeds are 
enclosed in a ‘ cupule-like ' investment, and are still attached to the axes on which 
they were borne in the living state. 
The seeds are radiospermic, and vary from 4 to 5-5 mm. in length, and from 1.5 
to 3 mm. in breadth at their widest part. The integument is slightly notched or fluted 
at the apex, and in this respect recalls Z. Lomaxi. The * cupules ’ vary from 
8 to 9-5 mm. in length, and are attached to the axis slightly below the seed. They 
enclose the seed somewhat loosely, and are divided at the apex into several, 
apparently erect, lanceolate lobes. 
It seems probable that the axes on which the seeds are borne are the segments 
of a highly compound frond with reduced lamina, in all probability of the Sphenopteris 
type. 
