76 Transactions of the Boijal Society of South Africa. 
figs. 6-8, p. 444), which, however, differs from Sowerby's type in 
possessing a much stronger concentric sculpture, shows a rounder 
and wider posterior region ; otherwise it is probably the form which 
comes nearest to the present species. A remarkable resemblance 
may also be noted with the figure of Moricke's Venus (Cytherea ^) 
pacifica from the " Quinquina- Schichten (= Aturian or Upper 
Senonian) of Chili, South America {Neites Jahrh. — -Beilage-Band, 
X., pi. 7, fig. 7, p. 103). 
Locality. — Tributaries of the Manuan Creek. 
Family CAKDIID^ 
Genus PEOTOCAEDIA, Beyrich, 1845. 
K. T. Menke's Zeitschrift fiir Malakozoologie, pp. 17-20. 
PflOTOCARDIA HILLANA, J. SoWCrby. 
Plate v., fig. 16. 
Gardium hillanum, J. Sowerby, Mineral Conchology, 1813, vol. 1, 
pi. 14 (upper figure), p. 41 ; Orbigny, Pal. Frangaise, Terr. 
Cretaces, Lamellibranchia, 1843, pi. 243, p. 27 ; E. Forbes, 
Trans. Geol. Soc. London, 1846, ser. 2, vol. 7, p. 146. 
Protocardia hillana, Geinitz, Grundriss Versteinerungskunde, 
1846, vol. 2, pi. xix., fig. 4, p. 421. 
Gardium hillanum, Coquand, Geologie et Paleontologie, Con- 
stantine, 1862, p. 291. 
Gardium {Protocardia) hillanum, Zittel, Denkschr. h. Ah. Wiss. 
(Vienna), 1864, vol. xxiv., pi. 7, figs. 1, 2, p. 146. 
Protocardium hillanum, Stoliczka, Cretaceous Pelecypoda, 
Southern India, Pal. Indica, 1871, pi. xii., figs. 8-10, pi. xiii., 
figs. 1-3, p. 219. 
Gardium hillanum, Griesbach, Quart. Joitrn. Geol. Soc, 1871, 
vol. 27, p. 62. 
Gardium hillanum var. moabiticwn, Lartet, Explor. Geol. La Mer 
Morte, 1877, pi. xi., fig. 5, pi. xii., fig. 9, p. 130. 
Gardium hillanum, Seguenza, Atti B. Accad. Lincei (Eoma), 
1882, ser. 3, Mem., vol. xii., p. 149. 
Protocardia hillana vars. typica and grandis, Blanckenhorn, Beitrage 
zur Geologie Syriens, 1890, pp. 89, 90. 
Protocardia hillana, Peron, Desc. Mollusques Cretaces, Explor. 
Scieiitif. Tunisie, 1891, part 2, p. 276. 
Gardium hillanum, Jukes-Browne and Hill, Cretaceous Eocks 
of Britain, Gault, &c., Mem. Geol. Surv. United Kingdom, 1900, 
p. 465. 
