Cretaceous Gastropoda, and Pelecypoda from Zululand. 75 
Lulworth, in Dorsetshire ; the Isle of Wight ; and from Blackdown, 
Haldon, and Sidmouth, &c., in Devonshire. Judging from the 
numerous specimens occurring at Blackdown, it is probably more 
characteristic of that locality than any other. The French example 
figured by Orbigny is an internal cast without any vestige of 
ornamentation ; its. locality being given as from the neighbourhood 
of Tours (Indre-et-Loire). There appear to be few records of this 
species, and so far as can be ascertained no specimens have been 
reported from either Africa or India. 
Locality. — Tributaries of the Manuan Creek. 
Meeetrix andersoni, sp. nov. 
Plate YI., figs. 7-9. 
Description. — Shell sub-oval, moderately convex; umbones anterior, 
small, contiguous ; anterior margin short, rounded, prominently 
excavated beneath the beaks to form the lunule, the latter being 
small, well inscribed and cordiform ; posterior margin depressed, 
oblique, produced, enclosing a long, narrow escutcheon groove ; 
postero-ventral end narrow and sub-angulate ; ventral margin ovally 
curved, extensive ; sculpture consisting of numerous, close, 
equidistant, concentric ridges and deeply impressed sulcations. 
Dimensions. — 
Small Example Large Example, 
with Closed Valves. Eight Valve. 
Length 25 30 mm. 
Height 19 23 
Diameter 10 8 
Observations. — This shell appears to be of an intermediate character 
between J. de Carle Sowerby's Venus faha and V. oralis, originally 
described from the Blackdown deposits (= Albian) of England. 
From the first-named it differs in possessing more oblique or 
cuneiform and less compressed valves, and from V. oralis, it can be 
separated by its lesser convexity and straighter posterior margin. 
The sculpture of the African shell is also a good deal more regular 
and decided than that characterising the two species just mentioned. 
Certain shells have been described and figured by Stoliczka 
(Cretaceous Pelecypoda, Southern India, Pal. Indica, 1871, pi. xvi., 
figs. 31-33, p. 174), which show a similarity of ornament, among them 
being Cytherea (Callista) fahulina of that author which exhibits all 
the regularity of sculpture seen in the fossil from Zululand, but 
which has a relatively shorter contour and a much smaller tendency 
to a postero-ventral attenuation. The Venus faha of Orbigny (Pal. 
Fran9aise Terr. Cretaces, Lamellibranchia, 1843-1846, pi. 385, 
