404 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 
The occurrence of Jurassic rocks in the Sarawak river district was 
made known by the present writer in 1897 through the examination 
of material in the British Museum (Natural History) containing 
Alectryonia amor, an ostreiform shell of Middle Oolite age. 
BrerioGRaPHy. 
The literature on the Jurassic conchology of Borneo includes the 
following papers :— 
1890. Jartin, K.—‘‘ Versteinerungen der Sogenannten alten Schiefer- 
formation von West-Borneo”’?: Samml. geol. R.-Mus. Leiden, 
vol iv (1890). pp. 198-207, pls. xxii and xxiii. 
1895... Martin, K.—‘‘ Die Mesozoischen Schichten von West-Borneo’’: 
op. cit., vol. v (1895), pp 29-34. 
1896. Vogel, F.—‘‘ Mollusken aus dem Jura von Borneo’: op. cit., 
vol. v (1896), pp. 127-153, pls. ix and x. 
1896. rause, P. G.— ‘Ueber Lias von Borneo”: tom. cit., 
pp. 154-168, pl. xi. 
1897. Newton, R. Bullen.—“ On a Jurassic Lamellibranch and some 
other associated Fossils from the Sarawak River Limestones 
of Borneo; with a Sketch of the Mesozoic Fauna of that 
Island”: Geological Magazine, 1897, pp. 407-415. 
1898. Martin, H.—‘‘ Notiz tiber de Lias von Borneo”: Samml. 
geol. R.-Mus. Leiden, vol. v (1898), pp. 2538-256. 
1900. Vogel, K.—‘* Neue Mollusken aus dem Jura von Borneo”: 
op. cit., vol. vi (1900), pp. 40-76, pls. i-iv. 
1900. Cossmann, M.—{ Rectifications of nomenclature and an analysis 
of Vogel’s paper of 1900]: Revue Critique Paléozoologie, 
1900; pp: 12, 13, 162. 
List OF THE KNOWN Jurassic SHELLS FROM Borneo. 
Lias. Oo.iTR. 
CEPHALOPODA. 
Aptychus sp. mere 5s fe bo 508 ane * 
Huarpoceras sp. (group H. radians, Reinecke)... Pre * 
Perisphinetes sp. ... oe see 500 
* 
GASTROPODA. 
Acteonina ?) Martini, Vogel... 500 
Alaria ch. trifida, Phillips... 
Cerithium contortum, Vogel 
Cae sp. 
Euspira Borneensis, V ogel . 
Exelissa septemcostata, Vogel 
Ficula s 
Lunatia Sambasana, Vv ogel Bs 
Pseudomelania ct. abbreviata, Roemer 
Strombus sp. 
* exe KK KK KH KR 
LAMELLIBRANCHIA. 
Alectryonia amor, Pinte 
Aca sp. 
dstarte Bornee nsis, Vv ogel . 
ivianhe Eastoni, V ogel 
Alstarte sp. . ae sae Be ae en 
Corbula Vogel, Cossmann (= Bornecnsis, Vogel, preoccupied) 
kx Ke KK & 
