286 Annals of the South African Museum. 



comparable with that of one of Etheridge's Queensland specimens* and 

 of a common Blackdown form (e. g. B.M., No. 52043). This latter is 

 interesting, since it is connected by quite a series of transitions with S. 

 orbignyi on the one hand, and with compressed forms converging towards 

 Proliysteroceras^ goodlialli on the other. The, Blackdown form stands 

 in the same relationship to S. bispinosa as S. orbignyi to 8. picteti that 

 \is to say, the Zululand species here described, like S. picteti, represents 

 the less coarsely ornamented type. Near the end of the shell the costae 

 become single and equally bituberculate, and on the cast show no trace 

 of spiral striatiou. The Angola S. ci/cloceratoides, Spath, has similar 

 lateral ornament, but is compressed and has no distinct keel, but 

 merely an angular periphery, like certain Acantkopleuroceras. 



S. leoennsis, Conrad sp.,+ includes a group of bispiuous forms that 

 have a certain resemblance to the specimen here described. Whether, 

 however, such forms as, e. g., Hill's S. leonetisis, are identical with 

 Conrad's type seems doubtful. Lasswitz|| probably has misinter- 

 preted the species altogether, putting it in the Senouian. 



A worn fragment (No. 4971) of the body-chamber of a large 

 specimen, in which the costatiou has become single, in whorl-section 

 and peripheral aspect agrees with the species here described. In 

 somewhat similar body-chamber fragments of S. stoliczkai from 



fi 



Angola, the peripheral tubercle is more prominent, elongated longitu- 

 dinally and ] >rojected upwards. 



Locality. Middle Branch, Manuan Creek. Coll. W. J. Wybergh. 



FAMILY: LYELLICEBAT.TD^E. 



GEN. STOLICZKAIA, Neumayr. 

 11. STOLICZKAIA sp. iud. 



1888. Stoliczkaia dispar (d'Orbigny) Choffat, In Choffat & de 

 Loriol, "Materiaux . . . Angola," Mem. Soc. Phys. and 

 d'Hist. Natur. Geneve, t. xxx, No. 2, p. 69, pi. ii, fig. 6 ?. 



1894. St. clavigera (Neumayr) Kossmat. " D. Bedeut. d. Siidind. Kr. 

 P.," Jb. K.K.E.A., vol. xliv, p. 465. 



* " Low. Cret. Foss., etc.," II, Cepli. ii, ' Records Austral. Mas.,' vii, 4 (19C9), 

 pi. Ixvi, fig. 1 only. 



t Gen. nov. Genotype = P. wordiei, nov., a IIBAV Angola species of the candolli- 

 anum-goodhalli group. 



J " Descr. of Cret. and Tert. Foss.," ' Geol. Rep. Mexican Boundary ' (1857 ?), 

 p. 160, pi. xvi, figs. 2 a, b. 



Loc. cit., 1901, pi. xxxvi, figs. I, I a (as A. (Schloenbachia) leonensis,'Roiner~). 



|| Loc. cit., p. 23. 



