Geological Society of London. 391 



served, is a long, slender-necked Plesiosaur, exceeding 16 feet in 

 length. Its limbs are much larger in proportion to the whole length 

 than in the typical Liassic forms of this genus; but what particularly 

 distinguishes it from these are the massiveness of the humerus and 

 femur, the longer size of the wing-like expansion of the postaxial 

 border, a well-developed trochanter, and especially three articular 

 facets at the distal end of the femur, corresponding to which the 

 second segment of the paddle, representing the leg, contains three 

 coequal bones. The author noticed the impression of a third bone 

 in this segment ia the matrix, in which a paddle of PUosaurus port- 

 landicus is imbedded, and the ossicle on the postaxial border of the 

 fibula in Plesiosaurus rugosus. He compared the paddle-bones of 

 the Kimmeridge Plesiosaurus with those of Ichthyosauri and of the 

 Liassic Plesiosaurs and of PUosaurus, he drew attention to the very 

 close resemblance of the humerus and femur to type specimens of the 

 femora of PUosaurus Irachydeirus and P. trochanterius in the British 

 Museum, and traced a similar resemblance between the elements of 

 the cnemion and tarsus, and those of the Dorchester and Portland 

 Pliosaurian paddles. For this creature, combining a long truly Ple- 

 siosaurian neck with Pliosaurian-like limbs, the author proposed the 

 name of Plesiosaurus ManseUi. 



4. " Notes on the G-eology of the Lofoten Islands." By T. Gr. 

 Bonney, M.A., F.G.S., Tutor of St. John's College, Cambridge. 



The author described the general appearance of the Lofoten 

 islands, which have commonly been described as composed of 

 granite, but which he stated really consisted of gneissic rocks. The 

 scenery of some of the islands, on which he did not land, resembled 

 that of the Cambrian and Cambro- Silurian districts of Wales and 

 Cumberland ; and the interior of Hassel showed dark rounded fells, 

 resembling in outline some of the softer Welsh slates. At Stok- 

 markuEBS and at Melbo there is a granitoid rock of pinkish-grey 

 colour, consisting of felspar and platy hornblende, with some mica 

 and quartz. The Svolvaer Fjeld in Ost Vaago shows a distinctly 

 bedded structure in the cliffs near Svolvaer, the debris at the foot of 

 which consist of a rock resembling syenite, and a quartzite contain- 

 ing a little hornblende and felspar. Bedding was also observed 

 towards the Oxnses Fjord. The islets near this coast consisted 

 chiefly of a granitoid rock resembling a syenite, showing traces of 

 bedding to the west of Svolvaer. Seams and veins of quartz, horn- 

 blende, etc., occurred in some of the islets, and these were sometimes 

 too regular to be explaiaed by deposition in fissures. Near the 

 Svolvaer post-ofSce there was gneiss coarsely foliated, containing 

 hornblende and mica, with pink orthoclase felspar. The author 

 concluded, from his observations, that, with few exceptions, the so- 

 called granites of the Lofoten islands are stratified, highly metamor- 

 phosed rocks, quartzites, and gneiss, generally with much felspar in 

 the latter, and with more or less hornblende in both, and that they 

 are inferior in position to the gneiss and schists of the mainland, and 

 to the more slaty rocks of the southern and western parts of the 



