Cretaceous Gastropoda, and Pelecypoda from Zulitland. bl 
has been regarded as of Cenomanian age entirely, but its occurrence 
in the Haldon and Blackdown Cretaceous deposits would suggest a 
greater antiquity, so that its range in time would be acknowledged 
as extending from x\lbian to Cenomanian, the latter in Britain being 
found in the Pectcn asper zone of Warminster, Ventnor, Maiden 
Newton, &c., whilst those from European and other foreign 
localities have been reported from such countries as France, Ger- 
many, Holland, Austria, Switzerland, United States (Texas), &c., a 
key to which is to be found in the very complete synonymy of this 
species offered by Mr. H. Woods in his Monograph of British Creta- 
ceous Lamellibranchia, published by the Paleontographical Society. 
It IS of further interest to note that N. quadricostata occurs in Syria 
(Lartet, Hamlin, and Blanckenhorn), as well as in Northern Africa, 
such as Algeria (Coquand) and Tunis (Peron), whilst M. H. Douville 
has reported it from the north-west of Madagascar in rocks of Albian 
age, and several years since the late Dr. P. M. Duncan identified it 
among some fossils from the south-east of Arabia and also from Bagh 
on the Nerbudda in Afghanistan, which he attributed to tlie 
Cenomanian. According to Dr. Edgar Dacque,* the species occurs in 
the Santonian beds of Egypt (Abu Eoash, near Cairo), but this is 
probably an uncertain determination, because in the synonymy 
is included Bayle's Pecten tricostatus, as quoted by Blanckenhorn,! 
from the same locality, a species differing in certain features from 
Sowerby's quadricostata, and which, moreover, belongs to a much 
higher horizon of the Cretaceous series. As mentioned by Mr. 
H. Woods, the Senonian form figured by Orbigny as quadricostata 
being different from Sowerby's shell of the same name, was altered 
by Pictet and Campiche (Desc. Foss. Terr. Cret., St. Croix — Mat. Pal. 
Suisse, 1870, ser. 5, p. 253), to NeitJiea [Janira] faujasi, although 
this has since been regarded as synonymous with the regularis 
of Schlotheim (Choffat, Faune Cret. Portugal, 1901-1902, vol. 1, 
ser. 4, p. 119). Pictet and Campiche distinguished the Senonian 
shell by the presence of seven or eight ribs on the anterior and 
posterior outer surfaces instead of a fewer number as in the true 
quadricostata of J. Sowerby. It may also be recognised as a less 
angulate shell, the six leading costae being of lesser elevation, soth 
the divisions are not so clearly separable. NeitJiea faujasi is very 
characteristic of the Upper Senonian deposits (Msestrichtian) of 
Holland, and from rocks of similar age in Baluchistan, Dr. F. Noetling 
having recorded its occurrence, but under the wrong specific deter- 
mination of Sowerby's quadricostata [Pal. Indica, Mem. Geol. Surv. 
* PalceontograpMca, 1903, vol. 30, part 2, p. 361. 
t Zeitschr. deutsch. geol. Ges., 1900, vol. 52, p. 39. 
