242 Annals of the South African Museum. 



form the shell closely resembles B. morganianus, Hartt and Eathbun,* 

 and the peristome apparently corresponds to the description : the 

 -species is found in the Devonian of Erere. 

 Locality. — (No. 110) Gamka Poort. 



BELLEEOPHON QUADEILOBATUS, Salter. 



1856. Belleroplion {EupJiemus) quadrilobatns, Salter, Trans. Geol. 

 Soc, ser. 2, vol. vii., p. 214, woodcuts figs. 1, 2. 



The species described by Salter as B. quadrilohatus from Warm 

 Bokkeveld is not represented in the present collection. The original 

 description of it is as follows : " Involute, with a very small 

 umbilicus, the edges of which are rounded. Whorls thick, broader 

 than deep, with a concentric sulcus on each side, and with a veiy 

 broad flattened and almost two-lobed dorsal margin. Keel probably 

 none. Aperture semi-lunar, indented on each side above by the 

 sulci, and more than twice as broad as deep. Diameter of the shell 

 f of an inch." 



Salter remarked that this species was closely allied to such forms 

 as B. (Euph.) trilobatus, Sow., and B. hisulcatus, Eom., and we may 

 add that it is also allied to such species as B. {Plectonotus) dcrhyi, 

 Clarke, + from the Devonian of Brazil. Ulrich X considered that 

 the species described by him as Belleroplion sp. a from the Devonian 

 of Bolivia was allied to B. quadrilohatus. 



Locality. — Warm Bokkeveld. 



BELLEEOPHON (BUCANIELLA) aff. TEILOBATUS, Sowerby. 



(PI. XXX., fig. 5.) 



There is one obliquely crushed and distorted specimen of a 

 Belleroplion (No. 213) which seems to have the characteristic 

 trilobation of B. trilobatus, Sowerby. § The peripheral keel is strong, 

 prominent, and subangular ; the lateral keels are much less strong, 

 but distinct ; the mouth is very large, broadly expanded and deeply 

 emarginate on the dorsal side ; the outer whorl rapidly expands and 



* Hartt and Rathbun, Ann. N.Y. Lyceum Nat. Hist., vol. xi., 1875, p. 117. 

 Clarke, Palseoz. Faunas of Para, Brazil (Archiv. Mus. Nac. Rio de Janeiro, vol. x., 

 1899), English edit. 1900, p. 34, pi. iii., tigs. 1-3. Katzer, Grundziige d. Geol. d. 

 anteren Amazonasgebietes (Leipzig, 1903), p. 205, t. xiii., fig. 3«, h, c. 



t Clarke, op. cit., p. 38, pi. iii., figs. 14-17. 



* Ulrich, op. cit., p. 41. 



^5 Sowerby, in Murchison's Silur. Syst., p. G04, pi. iii., fig. 16. 



