﻿76 Geological Society: — 



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 hone 

 in this segment in the matrix in which a paddle of Pliosaurus 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 Pliosaurus ; he drew attention to the very- 

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

 femora of Pliosaurus brachydeirus 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. Eor this creature, combining a long, truly Ple- 

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

 name of Plesiosaurus Manselii. 



4. " Notes on the Geology of the Lofoten Islands." By T. G. 

 Bonney, M.A., P.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 gra- 

 nite, but which, he stated, really consist of gneissic rocks. The 

 see aery 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- 

 marknses 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 Pjeld in Ost Yaago 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 Pjord. 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, &c. occurred in some of the islets ; and these were some- 

 times too regular to be explained by deposition in fissures. Near 

 the Svolvaer post-office there was gneiss coarsely foliated, containing 

 hornblende and mica, with pink orthoclase felspar. The author 

 concluded, from his observations, that, with few exc3ptions, the so- 

 called granites of the Lofoten Islands are stratified, highly meta- 

 morphosed rocks, quartzites, and gneiss, generally with much fel- 

 spar 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 same islands. He compares them with some gneiss 

 from Dalbeg on the west coast of the island of Lewis. 



5. " On Dorypterus Hofmanni, Germar, from the Marl-slate of 

 Midderidge, Durham." By Albany Hancock, Esq., E.L.S., and 

 Eichard Howse, Esq. 



The material for this paper consisted of four specimens of Do- 



