16 ITCOPODITES. 



others the stems may branch." Sporangia are fairly common, and 

 occasionally occur in organic connection with the leaf-bearing stem. 

 Miss Sollas submitted several sporangia to a minute examination, 

 and found that it was possible to dissolve out the spores by dilute 

 hydrochloric acid. The spores, which are tetrahedral and provided 

 with two coats, a smooth intine and an exine covered with 

 irregular bosses, measure 0-08 mm. in diameter, being twice as 

 large as the spores of any recent species of Lycopodium examined by 

 Miss Sollas. The stem is covered with an epidermis composed of 

 long rectangular ceUs, and below this were found several narrow 

 tubular elements. In the leaves only a single layer of cells was 

 detected, but Miss Sollas considers that the lamina was originall}" 

 made up of several layers, while stomata, of which no trace was 

 seen in the epidermal layer of the leaf, may have been present. 

 Without quoting further from Miss Sollas' paper, which should be 

 consulted for a more complete account, I may add that I entirely 

 share the conclusion arrived at, that Naiadita must be regarded 

 as a member of the Lycopodiacese. This Ehsetic species differs in 

 its much more slender habit and in the narrow form and smaller 

 size of its leaves from the Inferior Oolite type Lycopodites faleatus, 

 L. & H.i 



V. 4015. PL II. Pigs. 2 and 3. 



The fragment represented in Fig. 2 illustrates the slender 

 moss-like habit of the plant ; Pig. 3 shows the single layer of 

 epidermal cells. Under this number (V. 4015) are included 

 several slabs of rock covered with broken fragments of stems and 

 leaves of Lycopodites lanceolatus. 



ISeax Eedland. Presented hy W. S. Wiches, Esq. 



v. 3356. Pigured by Buckman as Naiadita petiolata, Quart. 

 Joum. Geol. Soc. p. 415, fig. 4, 1860. The figure is not very 

 accurate, and represents the plant much larger than natural size. 



EstJieria bed, near Bristol. Brodie Coll. 



v. 3357. [Said to be figured by Buckman, Quart. Journ. 

 Geol. Soc. figs. 2-3, 1850.] Fragments like that shown in 

 PI. II. Pig. 2. 



Near Bristol. Brodie Coll. 



Other specimens :— V. 1437, V. 3394, V. 3397. 



1 Lindley & Hutton (31), pi. Ixi. 



