On the Species of the Genus Palseoxyris. 61 



Horizon. — Coal measures. 



Localities. — Coalbrook Dale and Madeley Court, Shrop- 

 shire ; Woodhill Quarry, Kilmaurs, Ayrshire. 



Pal^oxyeis carbonaeia, Schimper. 

 (PL I, Pigs. 2, 3.) 



Palceoxyris carhonaria. 



Stiehler, Zeitsch. d. deut. geol. Gesell., vol. ii., p. 182, pi. vii. 1850. 



,, Bull, de la Soc. Geol. de France, 2^ ser., vol. vii., p. 650. 1850. 

 Germar, Vers. d. Steinkolilengebirges v. Wettin w. Lobejun, Heft vii., 



p. 95, pi. xxxiii., fig. 3. 1851. 

 Andrffi, Jahrb. d. Naturw. Vereiiies. Halle, 1860, p. 130. 

 Sporlederia carhonaria. 



Stiehler, Die Bromeliaceen der Yorvvelt. Berichte d. natur. Vereiiies des 

 Harzes zu Blankenburg, pi. i., 1861. 

 Spirang mm carhonarium. 



Scliimper, Traite d. paleont. veget., vol. ii., p. 516. 1870-72. , 

 Grand'Eury, Flore carbon, du Dep. de la Loire, p. 307. 1877. 

 Palceoxyris api^cndiculata. 



Lesquereux, Report, Geol. Survey of Illinois, vol. iv., p. 465, pi. xxvii., 



fig. 11. 1870. 

 Lesquereux, Coal Flora of Pennsyl., vol. ii., p. 520, pi. Ixxv., fig. 12. 

 1880. 

 Spirangium appencliculat um. 



Scliimper, Traite d. paleont. veget., vol. iii., p. 585. 1874. 



Description. — Body fusiform, composed of 6-8 equal seg- 

 ments. The body part of the specimen usually measures 

 about 3 cm. long and 12 mm. wide. The segments are 

 about 2 mm. broad. The fossil is gradually narrowed into 

 a stalk-like extension at each end. 



Remarks. — The segments cross the body more obliquely 

 than in any other British species, and when the fossil is 

 compressed, form rhomboidal meshes on its surface, which are 

 as long as broad. The specimen, which is drawn on PL I., 

 Fig. 2, shows towards the extremity marked a a considerable 

 prolongation of the spirally twisted segments, which, when 

 compressed, owing to the angle at which their circumvolu- 

 tions cross each other, form much more elongated rhombs 

 than those occurring on the body. The prolongation at the 

 other end of the fossil does not exhibit so great a twisting of 

 the segments. I am unable to say which extremity repre- 



