Palaeontologie. 355 



structure is not preserved in either case, these seeds in their 

 external morphology aj^ree so closely with the three species of 

 Lagenostoma previoiisly recorded from petrified material that 

 there can be no hesitation in referring tiiem to the same genus. 

 In view of the recent attribution of the seed Lagenostoma Lo- 

 maxi to Lyginodendron by Professor Oliver and Dr. Scott, 

 it is high!y probable that these new species belonged either to 

 that genus or to some closely related member of the Lygl- 

 nodendreae. These specimens also throw light on the habit of 

 these plants, especially with regard to the manner in which the 

 female organs wcre borne. 



The first species, for which the name Lagenostoma Kidstoni 

 is proposed was obtained many years ago from the Lower 

 Goal Measures at Swinhill Colliery, Stonehouse, Lanark. The 

 seed, is of the radiospermic type, and measures on an average 

 about 6 mm. in length, and 2,3 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 

 lairly closely with L. physoides Will. 



The seeds are in nearly every instance naked and detached. 

 Associated with them are several long, naked rachis-like struc- 

 tures, which correspond somewhat closely v^ith portions of cer- 

 tain highly-compound fronds of the Sphcnopteris type. In 

 one particular case several seeds may conceivably be still atta- 

 ched 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 con- 

 clusive as one could wish, for the provisional yiew that these 

 seeds were borne sessile on the terminations of the finer 

 branches of a foliar organ probably of the Sphenopteris type. 



The second seed, Lagenostoma Sinclairi^ Kidston MS., was 

 obtained from the Lower Goal Measures at Orange Golliery, 

 Kilmarnock, Ayrshire. 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 L. 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 Com- 

 pound frond with reduced lamina, in all probability of the 

 Sphenopteris type. 



