Cretaceous Gastropoda, and Pelecypoda from Zulidand. 
16, and pi. 41, figs. 4-6, p. 433), the shell from Zululand seems to 
show a favourable relationship although the absence of specimens for 
purposes of comparison militates against any investigation to prove 
such a point with absolute success. 
Dimensions. — 
Length 17 mm. 
Height 19 
Locality. — Tributaries of the Manuan Creek. 
Genus SYNCYCLONEMA, Meek, 1864. 
Check List of the Invertebrate Fossils of North America. — Smith- 
sonian Miscellaneous Collections, 1864, p. 7. 
Syncyclonema oebiculaeis, J. Sowerby. 
Plate III., figs. 3, 4. 
Pecten orbicularis, J. Sowerby, Mineral Conchology, 1817, vol. 2, 
pi. 186, p. 193. 
Pecten laminosa, Mantell, Geology of Sussex, 1822, pi. 26, figs. 8 
and 22, p. 128. 
Pecten (Syncyclonema) orhicidaris, Stoliczka, Cretaceous Pelecypoda, 
Southern India, Pal. Indica, 1871, vol. 3, p. 428. 
Syncyclonema orbicularis, E. B. Newton, Proc. Dorset Nat. Hist. 
Antiq. Field Club, 1897, vol. 18, pi. 3, fig. 9, p. 84. 
Pecten {Syncyclonema) orbicidaris, H. Woods, Cretaceous Lamelli- 
branchia, England, Mon. Pal. Soc, 1902, pi. 27, p. 145. 
Observations. — This species is represented by a single valve 
attached to the matrix exhibiting external characters, which from 
its apparently smooth surface and the nature of its auricles may be 
regarded as an upper or left valve. The height slightly exceeds the 
length ; it is gently convex ; the left ear, although fractured, is 
observed to be longer, rather narrower, and more oblique than the 
other, and both have sub-angulate dorsal extremities. The orna- 
mentation, only distinguishable with a lens, consists of closely set, 
minute, concentric ridges and sulcations beautifully preserved, 
especially on the dorsal half of the valve, otherwise in the ventral 
region the original shell structure appears to be absent, except 
perhaps near the margin, where evidence of similar sculpture can 
be also obtained. The surface of the right auricle is seen to possess 
the usual delicate transverse striations or growth-lines of the species. 
Dimensions. — 
Length 27 mm. 
Height 30 „ 
The type is recorded from the Greensand " of Devizes, and is 
