﻿344 PALJS0XYR1S AND OTHER ALLIED EOSSILS. [Aug. I9IO, 



Plate XXV. 



Fig. 1. Paltsoxyris prendeli, Lesquereux. Shipley Clay pit (Derbyshire). Two- 

 thirds of the natural size. Showing the beak and the arrangement 

 of segments in the body. Author's collection. 



2. The same enlarged, showing details of the beak. 



3. Palceoxyris (Vetacapsula) johnsoni, Kidston. Bilston (Staffordshire). 



Natural size. Collection of Dr. B. Kidston, Stirling. 



4. Vetacapsula cooperi, Mackie & Crocker. Newthorpe Claypit, Eastwood. 



Two-thirds of the natural size. Author's collection. 



Plate XXVI. 



Fig. 1. Vetacapsula cooperi, Mackie & Crocker. Sparth Bottoms (Lancashire). 

 Natural size. From Dr. B. Kidston's collection, Stirling. 



2. Fayolia crenulata, sp. nov. Portion of encasing nodule, showing 



crenulate ' collerette.' 



3. F. crenulata, sp. nor. Shipley Claypit (Derbyshire). Natural size. 



Presented to the Museum of Practical Geology, Jermyn Street. [This 

 figure bas been accidentally reversed, its lower extremity being 

 uppermost.] 



Plate XXVII. 



Fig. 1. Details of Fayolia crenulata. x 2. 



2. Fayolia cf. F. dentata, Benault& Zeiller. Shipley (Derbyshire). About 



natural size. A compressed example, showing a finely striated spine. 

 Presented to the Museum of Practical Geology, Jermyn Street. 



3. Egg-capsule of Chimcera phantasma. Misaka (Japan). Ventral aspect, 



a third of the natural size. Copied from Bashford Dean's monograph 

 on Chimaeroids. 



4. Egg-capsule of Chimcera mitsukurii. Misaka (Japan). Ventral aspect, 



a third of the natural size. Copied from the same monograph. 



Discussion. 



Dr. Henry Woodward, after referring to the many rare and 

 interesting fossils obtained by the Author from the Coal Measures 

 near Nottingham, expressed his opinion that the organisms, long 

 known as Palceoocyris, were more probably egg-capsules of some species 

 of Carboniferous fish, rather than a part of any plant- — although 

 found associated with various plant-remains and not occurring with 

 those of fishes. He thought it very possible that (as is the habit 

 of the living Salmonidaa) these Coal-Measure fishes might have 

 entered the estuaries or the rivers, in order to deposit their ova or 

 their egg-capsules, and have left these attached to vegetation, either 

 floating or fixed. The sujDerficially plant-like aspect of Palceoxyris 

 might have been only a mimetic resemblance, and have served as a 

 protective disguise for the young embryo. 



Dr. Walcot Gibson remarked that the results obtained by the 

 Author were the outcome of long-continued and skilfully con- 

 ducted work in the field and in the laboratory. The close association 

 of marine organisms with plants in the Coal Measures of Derbyshire 

 and Nottinghamshire could be explained by the proximity of 

 swamps to the Carboniferous sea throughout the Coal-Measure 

 Period. 



Dr. Smith Woodward welcomed the new facts concerning the 

 structure of Pdlceoxyris and allied fossils, but regretted that they 



