Geological Society of London. 379 



are depressed ; the transverse processes are at first directed back- 

 ward, but soon become directed outward, retaining their upward 

 direction ; the facet for the head of the rib is at first large, placed at 

 the base of the transverse process and bounded behind by a sharp 

 ridge which runs to the hinder margin of the neural arch ; but after- 

 wards the rib-head rises higher, so as to be chiefly above the zyga- 

 pophysial facets, and then it becomes smaller, the ridge behind it 

 disappears more or less, and the transverse process becomes vertically 

 compressed and thin. The author referred to other vertebra showing 

 similar characters contained in the Fox Collection in the British 

 Museum, but stated he had seen neither cervical nor caudal vertebra 

 of this type. The animal indicated by these remains was regarded 

 by the author as constituting a new genus most nearly allied to 

 Itjuanodon, for which he proposed the name of Sphenospondylus ; but 

 he abstained from giving the type a specific name " in view of the 

 likelihood of these vertebree pertaining to the Iguanodon Seelyi." 



3. " On Organic Remains from the Upper Permian Strata of 

 Kargalinsk in Eastern Eussia." By W. H. Twelvetrees, Esq., E.G-.S. 



In this paper the author described the Kargalinsk steppe, north of 

 Orenburg, as consisting of a grassy, treeless, undulating steppe, with 

 sluggish, winding streams, in the banks of which, and in ravines, 

 the exposui'es of subsoil show only red marl or sandstone devoid of 

 fossils. Mine-borings and shafts go down through red, yellow, and 

 grey sandstones and red and white marls, which are fossiliferous 

 wherever the beds of copper-ore exist. On the eastern border of 

 the steppe there are two protrusions of limestone, with Terehratida 

 elongata, Loxonema, etc., on outcrops running nearly N.W. and S.E., 

 which throw off the cupriferous sands east and west. The western 

 of these outcrops in its southern continuation near Sakmarsk is 

 charged with Permian fossils, including the above ; the same lime- 

 stone, regarded by the author as belonging to the Zechstein, crops 

 up in other places and apparently underlies the whole basin of the 

 steppe, the upper sandstones resting conformably upon it. From 

 the latter the author gave the following list of fossils : —Cardiopteris 

 Kutorgcs (= Aroides crassispatha), WalcJda biarmica and piniformis, 

 Lepidodendron, Schizodendron tvbercidatum, Anomorrhcea Fisclieri, 

 Caidopteris ?, Calamites infractus, Suchowi, gigas, and leioderma, TJnio 

 umbonatus, Platyops Richardi (a Labyrinthodont), Bhopalodon Wan- 

 genhauseri, GliorJiizodon orenburgensis, Deiiterosaurus, and various 

 Labyrinthodont and Reptilian remains. Upon these the author 

 remarked that the list of plants has a Palaeozoic aspect, while the 

 Reptilian remains seem to be more of a Secondary character. After 

 consideration of all the facts, the author came to the conclusion that 

 possibly some of the beds in the central part of what is known as the 

 Permian basin may be passage-beds between the Permian and Trias, 

 but that the Kargalinsk series includes the uppermost beds of the 

 Permian. 



4. " The Rhsetics of Nottinghamshire." By E. Wilson, Esq., F.G.S. 

 During the last few years several sections of the Rhaetic beds, in 



addition to those already known near Gainsborough and Newark, 



