Reports and Proceedings — Geological Society of London. 381 



but narrows distally ; its proximal portion forms a thin plate of bone. 

 The radius crosses the ulna, its proximal end lying entirely in front 

 of it, while the distal ends of the two bones lie side by side. The 

 carpus cannot be made out. Only metacarpals 1, 2, and 3 are 

 functional ; but a possible representative of 4 lies closely pressed to 

 the back of the other three. Both phalanges of digit 1 are preserved, 

 the last being a strong claw. 



Ornithosuchus is restored as an animal walking on all fours, with 

 the head carried rather low. The proportions are identical with 

 those of JEtomnrus. 



A description is given of the skeleton of a very small reptile, 

 interesting as recalling JEtosaurus in its armour, and because it shows 

 the whole of the animal except the tail. 



5. " Some Reptilian Tracks from the Trias of Runcorn (Cheshire)." 

 By D. M. S. AVatson, B.Sc. (Communicated by Professor W. Boyd 

 Dawldns, D.Sc, F.R.S., F.S.A., F.G.S.) 



Very little information exists as to the tracks of the smaller 

 reptilia of the Trias, although several types of footprints have been 

 described from isolated examples. Four types of tracks which occur 

 on the slab of sandstone from Weston Point, described in 1840 by 

 Dr. Black, are discussed in this paper. They belong to forms 

 generally included in the Rhynchosauroid types and to the footprint I, 

 Beasley. 



Both pes and manus are impressed in three of the cases, the other 

 being so small that it is doubtful whether the manus would have 

 made a recognizable impression if it did touch the ground. 



Footprint A 2, Beasley, has a manus very similar to the pes, but 

 showing some traces of the palm. 



Footprint A 8, sp. nov., has five toes in the pes connected by a web. 

 The manus is also five-toed, but corresponds to some extent to I, 

 Beasley. There is a well-marked tail-streak in the track. 



E, Beasley, which is very similar to I, really has five digits, the 

 fifth being directed backwards and only just touching the ground. 



A very small footprint is described as A 9. 



It is suggested that some of these prints may quite well belong 

 to such Thecodonts as Ornithosuchus. 



6. "The Anatomy of Lcpidophloios larici7ius, Sternb." By 

 D. M. S. Watson, B.Sc. (Communicated by Professor W. Boyd 

 Dawkins, D.Sc, F.R.S., F.S.A., F.G.S.) 



A specimen of Lepidophloios laricinus, found in one of the coal-balls 

 of Lancashire, shows the internal structure. The species is new, and 

 is of the ordinary lepidodendroid type, but is remarkable for the great 

 size and strength of the corona and the leaf-traces. 



Lepidophloios acadianus, Dawson, which is identical with L. laricmus, 

 appears to diff'er in its internal structure, in having still stronger 

 protoxylem-points and leaf-traces. 



Lematophloios crassicaule, Corda, which is L. acerosus, L. & H., 

 appears to resemble greatly the Lancashire specimen of L. laricinus 

 in its structure, and is quite distinct from the specimen of the same 

 form described by Cash & Lomax. 



