Annals of the Transvaal Museum 
29 
more conspicuous than the rest. There are no tubercles. The preceding whorls 
are smooth. 
The other specimen present consists of the complete involute portion to- 
gether with the beginning of the e volute portion. Not a vestige of tubercles 
is seen on this specimen. 
The lobe-line so strikingly resembles, even in 
detail, that of Sc. Cunliffei drawn by Pervinquiere, 
that its reproduction here may be regarded as suf- 
ficient. The only difference between our specimens 
and those of Pervinquiere seems to lie in a greater 
involution, which is one-third in the latter and more 
than one-half but less than two- thirds in the former. 
However, the species seems to be so variable, that this 
can scarcely be of any consequence. 
Measurements : 
I. 
Text-fig. 16. Scaphites 
Cunliffei. Lobe-line 
of plesiotype up to 
the umbilical suture 
on a radius of 6 mm, 
x3*5- 
Diameter 
Height of last whorl . . . 
Thickness of last whorl 
Diameter of umbilicus 
13-2 mm. (i-oo) 
5-8 „ (0-44) 
4-6 „ (0-35) 
3-8 „ (0-29) 
II. 
14*5 mm. (i-oo) 
7-3 » (0-50) 
5-5 (0-38) 
3-1 ( 0 - 21 ) 
The measurements of II. are taken on a diameter exactly before the e volute 
portion begins. 
Scaphites sp. PI. V, figs. 8, 9. 
Two other specimens in the collection, greatly resembling each other, have 
also been referred to Scaphites. The shells are completely coiled and if Scaphites, 
the uncoiled portion has broken off. The preserved portion is discoidal, umbili- 
cated. Sides of last whorl convex, external surface slightly flattened, especially 
near the end. The beginning of the last whorl is much thicker than high; at 
the end of the last whorl of the large specimen the height and thickness are 
about equal; in the small specimen the end of the last whorl is broader than 
high. The shell is covered with very coarse transverse ribs, which start on the 
umbilical edge without forming a tubercle. Most of these long ribs curve 
slightly forwards on the middle of the flanks, where they are thicker than 
anywhere else and from whence they generally bifurcate. Sometimes they do 
not bifurcate, but then a short rib, beginning on the middle of the flanks and 
running outwards, is intercalated between two long ones. All these ribs cross 
the external surface. On the last portion of the last whorl of the large specimen 
the ribs are slightly thickened on passing from the flanks on to the external 
surface. It will be seen from the figure, that the large specimen is not a regular 
spiral. There is nothing to show that this irregularity is not normal. Its 
umbihcus is much larger on one side than on the other. 
Measurements : 
Diameter 
Small specimen 
i 6'3 mm. (i-oo) 
Large specimen 
20 mm. 
Height of last whorl ... 
7‘3 » 
(0-45) 
II 
Thickness of last whorl 
9 
(0-55) 
9*6 
Height of penultimate whorl . . . 
3 
(o-i8) 
4 
Thickness of penultimate whorl 
4 
(0-25) 
5 
Diameter of umbilicus ... 
4 
(0*25) 
4*5 —3 mm- 
The ornamentation of these specimens shows great resemblance with that 
of Scaphitesl andurensis Stoliczka sp. However, there is no conspicuous row 
