On Cretaceous Cephalopoda from Zululand. 273 



III. THE MANUAN CREEK FAUNA. 

 DESCRIPTION OP SPECIES. 



A. ALBIAN. 

 1. AMMONOIDEA. 



FAMILY : PHYLLOCERATID^E. 



GEN. PHYLLOCERAS, Suess. 

 1. PHYLLOCERAS VELLEDAE, Michelin sp. 



1900. Boule, Lemoine <fc Thcveiiin : " Pal. de Madagascar, III, 

 Ct'ph. d. Diego- Suarez," Ann. de Pal., vol. i, fasc. 4, p. 7, pi. i, 

 fig. 11. 



1907. Crick. Third Report, p. 236 (Plnjlloceras sp.), B.M., No. 

 C18204. 



This well-known form is represented by a fragment (No. 4992) 

 completely septate, of a large example, agreeing both with the Zulu- 

 land and Madagascar specimens and with d'Orbigny's* and Pictet'sf 

 European types, in whorl-shape, ornamentation and suture-line. At 

 a diameter of 130 mm. the thickness is 47 mm., or 36 per cent, of the 

 diameter, which agrees with that of d'Orbigny's type. The fragment, 

 being nearly half of the Ammonite, shows the inner whorls in section, 

 and at a diameter of 54 mm. the thickness still is 36 per cent., 

 whereas the example figured by Crick as P. velledae, Stoliczka (non 

 Michelin?), has very flat sides, considerably more compressed than 

 Stoliczka' s large example. Crick's figured specimen, which also 

 shows striation only on the periphery, though the sides are weathered, 

 probably also is of later (/. e. Cenomanian) age, and may be closer to 

 the variety figured by Boule, Lemoine and Theveuin in fig. 10. || On 

 the other hand, the PhyUoceras sp., from the South Branch of the 

 Mauuan Creek, recorded by Crick, is identical with the form here 

 described. 



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



* Loc. cit. (1840), p. 280, pi. Ixxxii. 



f In Pictet and Koux, loc. cit. (1847), p. 30, pi. ii, fig. 1. 

 t Loc. cit. (Third Report, 1907), p. 166, pi. x, fig. 11 (B.M., No. C18137). 

 Loc. cit. (1865), p. 116, pi. lix, fig. 2. 



|| Of pi. i. This is dated, in explanation of plate, as "Cenomanien 

 superieur," but in the text (p. 8) the horizon is given as " Senonien inferieur." 



