Reports and Proceedings—Geological Society of London. 98 
By loss of foliation the gneisses tend to pass into granites, and the 
series is accompanied by pegmatites. 
The second group is distinguished by the wide distribution of 
quartz-schists, with which occur quartz-mica-schists, mica-schists 
(locally containing sillimanite), and hematite-schists. A partial 
analysis of a specimen of the last-named showed 67:77 per cent. of 
iron-peroxide. 
The district is compared with the Oban Hills of the Eastern 
Province. 
Il.—January 9th, 1907.—Sir Archibald Geikie, D.C.L., Sc.D., 
Sec. R.8., President, in the Chair. 
The following communications were read :-— 
_ 1. ‘On the Cretaceous Formation of Bahia (Brazil) and on the 
Vertebrate Fossils contained therein.”? By Joseph Mawson, F. oe Sy 
and Dr. Arthur Smith Woodward, F.R.S., F.L.8., F.G.S. 
This paper relates to a series of SE and fresh-water deposits 
originally described to the Geological Society by the late Samuel 
Allport, in 1859. The results of thirty years’ collecting of fossils 
are summarized, and the distribution of the formation, so far as 
determined, is marked on a map. The strata are disturbed by 
numerous dislocations and discordant dips, and no regular succession 
of zones or horizons can be discovered. All the more important 
vertebrate fossils collected are now in the British Museum (Natural 
History). From these a few remains of new species are selected for 
special description. A mandibular symphysis of a very large 
crocodile, with a long garial-like snout, belongs to one of the 
Goniopholide. Some Dinosaurian vertebre seem to belong to the 
Iguanodont group. A large fish-skull represents a new genus allied 
to Macropoma, and indicates a species five or six times as large as any 
Ccelacanth previously discovered. The discussion of a complete list of 
the fossil Vertebrata proves that the formation is of Cretaceous age, 
and suggests that it may be Lower Cretaceous, as supposed by Hartt. 
[Mr. R. B. Newton stated that Mr. Mawson’s collections contained 
some interesting molluscan remains, among which were a number of 
Anodont—or Unioniform—shells suggestive of Unio porrectus and 
U. antiquus of British Wealden areas, associated with Vivzpara- and 
Helania-like Gasteropods, all of which had been studied by Professor 
Hartt and later by Dr. C. A. White, both being of opinion that they 
belonged to the Lower Cretaceous. The vertebrate evidence now 
brought forward by Dr. A. S. Woodward, especially the newly 
recorded occurrence of Goniopholis, together with the Lepidotus-scales 
originally determined by Egerton, was strong confirmation as to the 
Lower Cretaceous age of these deposits. ] 
2. ‘‘On a New Dinosaurian Reptile from the Trias of Lossiemouth, 
Elgin.” By Arthur Smith Woodward, LL.D., F.R.S., F.L.S., F.G.S. 
Mr. William Taylor, of Elgin, has Ural discovered two 
skeletons of a small new reptile in the Triassic sandstone of 
