118 
Transactions of the Royal Society of South Africa. 
species to G. pulchrum, Crick, which has the dimensions of van Hoepen's 
species, but six labial ridges on the outer whorl. 
5. Gaudryceras cinctum (Crick MS.), Spath. 
(Plate IX, figs. 3a, b.) 
1921. Spath, Pondoland, loc. cit., pp. 41-2, and table to p. 50. 
This species is represented by a single, well-preserved example (No. 
C 19415), the dimensions of which are 64-5 — 40 — 37 — 34. Mr. Crick's 
long description of this form is not given, since the species is extremely close 
to G. varicostatum, v. Hoepen, and may only be the adult of the latter form. 
G. varicostatum, however, at a smaller diameter, has H > Th, and has a 
larger umbilicus. Crick also had compared his species to Griesbach's 
A. kayei, Forbes. The whorls of G. cinctum, however, are fewer, and the 
striation is coarser than in the typical Pondicherry examples of G. kayei in 
the British Museum. 
The writer compared this species to G. mite (Hauer), which is very close, 
but according to de Grossouvre * belongs to the Santonian. 
G. varagurense, Kossmat, which had been thought by Crick to be very 
close to 67. cinctum, has much finer ornamentation, and a different rib- 
curve. G. varagurense, var. patagonica, Paulcke,f is comparatively in- 
volute. 
6. Gaudryceras amapondense, v. Hoepen. 
1920. v. Hoepen, loc. cit., p. 143, pi. xxiv, figs. 4 and 5. 
1921. Spath, loc. cit., table to p. 50. 
The holotype of this species, compared by the writer to G. colloti, 
Grossouvre, and G. glaneggense (Redtenbacher), has its inner whorls too 
badly preserved for exact determination, but is more involute than G. 
cinctum. Its ornament is also far less regular. 
7. Gaudryceras sigcau, v. Hoepen. 
1921. Loc. cit., p 9, pi. ii, figs. 13-16, text-fig. 5. 
This species is based on immature specimens, compressed already at a 
very early stage, and thus different from any of the known Pondoland 
forms of Gaudryceras. 
* Craie Super., 1894, pp. 227-8. 
f "Ceph. d. Ob. Kreide S. Patagon.," Ber. Naturf. Ges. Freiburg i. B., xv, 1907. 
p. 6, pi. xvii (viii), figs. 1-2. 
