64 Proceedings of the Royal Physical Society. 



PAL.EOXYRIS TKISPIRALIS, n.S. 



(PL L, Fig. 7.) 



Description. — Body fusiform ; large ; about 12 cm. long and 

 3 cm. broad. Segments, three; concave, about 9 mm. wide. 

 Sutures slightly raised, but scarcely produced sufficiently to 

 form a distinct " coUerette." 



Bemarhs. — This species has a slight resemblance to Palce- 

 oxyris (Spirangiicm) multiplicatwn, Lesqx.,^ from the coal 

 measures of Mazon Creek; but the specimen from which 

 Lesquereux's figure has been taken is so badly preservedthat 

 it scarcely affords sufficient data for a comparison, nor does 

 his description of Pala^oxyris multiplicatum agree with the 

 present species. From the other members of the genus it is 

 easily distinguished by the width of its segments and their 

 small number. 



This specimen is also in the collection of Mr H. Johnson, 

 r.G.S., Dudley. 



Horizon. — Coal measures. 



Locality. — Coseley, near Dudley, Staffordshire. 



In conclusion I have only to express my thanks to the 

 Eev. D. Landsborough, Kilmarnock, who kindly afforded me 

 the opportunity of examining and describing the Ayrshire 

 specimens, which are in the possession of their respective 

 collectors, Mr McAllister, jun., Greenhill Farm, Kilmaurs ; 

 and Mr Harper, gardener, Anwick Lodge ; and also to Mr H. 

 Johnson, F.G.S., Dudley, who lent me many valuable speci- 

 mens from his collection; and to Mr H. W. Hughes, Dudley, 

 to whom I am indebted for the specimen shown at Fig. 4. 



Explanation of Plate. 



Fig. 1. Palceoxyris helicieroides, Morris sp. From Woodhill Quarry, Kil- 

 maurs, Ayrshire. In the collection of Mr M'Allister, jun. 



Fig, 2, Palceoxyris carhonaria, Schimper. From Coseley, near Dudley. 

 Specimen communicated by Mr H. Johnson, F.G.S., Dudley. 



Fig. 3. Palceoxyris carhonaria, Schimper. Uncompressed example from 

 Coseley, near Dudley, in the collection of Mr H. Johnson, Dudley. 



Fig. 4. Palceoxyris PrendeUi, Lesquereux. From Coseley, near Dudley. 

 Specimen communicated by Mr H. W. Hughes, Dudley. 



1 Coal Flora of Pennsyl., vol. ii., p. 520, pi. Ixxv., fig. 11. 1880. 



