Brachiopoda from the Bokkeveld Beds. 175 



are Ch. setiger, Hall/- Ch. lepidm Hall.f (in which there is a median 

 sinus in the pedicle valve), and Ch. scitidiis Hall.]: It appears that 

 the first-mentioned bears the nearest resemblance. All occur in the 

 Devonian (Marcellus-Chemung) of North America. 



Localities.— (No. 126) Witzenberg Valley, Ceres. ?(No. 125) 

 Gamka Poort. 



Family OETHID^. 



ORTHIS sp.? 

 (Plate XXL, fig. 6.) 



There are several imperfect valves of a small brachiopod re- 

 sembling Orthis on a slab of rock (No. 132) crowded with Cryptonclla 

 haini. The shell is convex and subcircular, with a curved hinge- 

 line. The beak of the pedicle valve is rather prominent and in- 

 curved. The brachial valve (10 mm. long) is less convex than the 

 pedicle valve, and has a small inconspicuous beak, and there is 

 a,pparently a faint median depression near the anterior margin. The 

 surface is marked by 20-30 simple angular ribs curving upwards 

 a little near the cardinal angles, and sepai'ated by strong grooves 

 equal in width to the ribs. 



Affinities. — This imperfectly known brachiopod seems to resemble 

 Orthis (Dalmauella) IcpidiLS Hall,§ of the Hamilton Group of North 

 America, and may be compared with Ulrich's Orthis sp. /3 |1 from 

 the Devonian of Bohvia. 



Locality. — (No. 132) Kloof north-west of homestead on Laken 

 Vley, Ceres. 



Oedek TELOTREMATA. 



Family EHYNCHONELLID^. 



EHYNCHONELLA (CAMAROTCECHIA) sp. 



(Plate XXL, fig. 7.) 



There is one cast of a transversely oval pedicle valve of a small 

 brachiopod associated with a multitude of Lcptocaelia JlahclUtes on a 



* Hall, Palseont., X.Y., vol. iv., 1807, p. 129, pi. xxii., figs. 1-5. 



t Ibid., p. 132, pi. xxii., figs. 12, 13. 



+ Ibid., p. 130, pi. xxii., figs. 6-11. 



§ Ibid., p. 40, pi. vi., fig. 1. 



II Uhich, Neues Jahrb. f. Min., Beil. Bd. viii., 1893, p. 77, t. iv., fig. 21. 



