308 Annals of the South African Museum. 



junction of the Manuaii and Umsinene Rivers, whereas from the 

 western bank of False Bay he only " obtained some fragmentary fossils, 

 very badly preserved, which Mr. Ethei'idge was inclined to think 

 belonged rather to the Tertiary than to the Cretaceous System." 



GEN. MORTONICERAS, Meek. 



1. MORTONICERAS VANUXEMI, Morton sp. 



(PL XXIII, figs. 4 a, 6.) 



1892. Mortoniceras vanuxemi (Morton), Whitfield. " Gast. and Ceph. 



Raritan Clays," Mou. U.S. Geol. Surv., vol. xviii, p. 252, pi. xlii, 



figs. 3-4. 

 1907. Mortoniceras delaivarense (Morton), Stuart Weller. Rep. Cret. 



Pal. New Jersey, vol. iv, Pal. Ser., p. 837, pi. civ, figs. 4-5 only, 



-non pi. ciii. 



A fragmentary specimen (No. 4947), showing interlocking suture-lines 

 and an impression of portions of the inner whorls, agrees with the 

 above figures and undoubtedly belongs to this species, which is 

 distinguished from its close ally M. delawarense, Morton sp., by being- 

 more compressed and less coarsely ornamented. The suture-line is of 

 the same type as those of M. woodsi (PL XXI, fig. 1 c) and M. soutoiii 

 (Baily) (PL XX, fig. 4) figured in this paper, but differs in the terminal 

 branches of the lateral lobe, which is perhaps due to the interlocking 

 of the (last few?) suture-lines. 



M. woodsi, uov., is an extreme development of M. vanuxemi, with 

 overhanging umbilical edge and fine and close ornament. 



GEN. BOSTRYCHOCERAS, Hyatt, 



2. BOSTRYCHOCERAS, ? sp. 



1906. Heteroceras sp., Woods. " Cret. Fauna of Pondoland." Ann. 

 S. Afr. Mus., vol. iv, pt. vii, No. xii, p. 339, pi. xlii, fig. 4. 



A small fragment (No. 4952), about 28 mm. in length, belongs to 

 the form clesci'ibed by Woods and has four intermediate ribs between 

 the flares, but it is too fragmentary to determine whorl-shape and 

 coiling. The reasons for referring the form to Bostrychoceras are 

 discussed under B. ? sp. nov. (p. 252) of the Uuikwelaue Hill fauna. 

 Hamites sp., described and figured by Jimbo,f seems to belong to a 



* Ibid., p. 57. 



t Loc. cit., p. 40, pi. ix, fig-. 1 only. 



