Descriptioxs of Devonian Fossils. 243 



SUPPLEMENT. 



The following, -with descriptions of other new species, were 

 intended to accompany the paper " On some new or imperfectly known 

 forms of Brachiopoda," in its completed form, but these two having 

 been figured the descriptions are here appended : 



Tkematis pungtostriata n. sp. 



Plate 13, figs. 17, 18. 



Shell of medium size, oblate, with the rostral border somewhat pro- 

 truding, giving a broadly oval form to the upper valve. Upper valve 

 convex, most prominent near the umbo ; lower valve flat, transversely 

 elliptical and strongly notched on the posterior margin, the notch 

 extending two-thirds the distance from the edge to the center of the 

 valve. 



Surface marked by distant radiating impressed stride, which are 

 indented along the bottom by distinct puncta. In exfoliated specimens 

 neither the stride nor puncta are visible, these being features of the 

 exterior layer only. 



The punctate and distant striae are features which distinguish this 

 species from any other described. 



Formation mid locality. In hydraulic limestone of the age of the 

 Trenton formation ; at Clifton, Tennessee. 



Trema'hs eudis n. sp. 



Plate 13, fig. 19. 



Shell of medium size, transversely elliptical, length and breadth 

 about as three to four ; beak projecting considerably beyond the car- 

 dinal border and broadly rounded. Upper valve strongly convex, dis- 

 tinctly marked by sharp flexuose strise ; cardinal angles deeply exca- 

 vated ; lower valve unknown. 



This species resembles T. filosa, of the Trenton limestone of New 

 York, in its transverse form and extended beak, but differs in the char- 

 acter of the cardinal slopes which, in this one, are concave. 



Formation and locality. In the hydraulic limestones of the age of 

 the Trenton formation ; at Clifton, Tennessee. 



These specimens have been derived from collections received many 

 years since, from Prof. J. M. Safford of Lebanon, Tennessee. 



