440 REPTILIAN REMAINS AND TRACKS IN THE TRIAS. [Aug. 1909, 



23. On some Reptilian Remains from the Trias of Lossiemouth 

 (Elgin). By D. M. S. Watson, B.Sc. (Communicated by 

 Prof. W. Boyd Dawkins, D.Sc., F.R.S., F.S.A., F.G.S. Read 

 June 16th, 1909.) 



[Abstract.] 



The fore limb of Ornitliosuclius ivoodiuardi is shown in a specimen 

 in the Manchester Museum. It is small, only about one-half the 

 size of the hind leg. The scapula is much expanded at both ends, 

 and is indistinguishably fused with the coracoid. The latter bone 

 is pierced by a large foramen. The humerus is a slender bone, 

 somewhat twisted, but not much expanded at the ends; it has a 

 distinct ectepicondylar groove. The ulna is very broad at the 

 proximal end, 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 meta- 

 carpals 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. 



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

 the head carried rather low. The proportions are identical with 

 those of JEtosaurus. 



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. 



24. On some Reptilian Tracks from the Trias of Runcorn 

 (Cheshire). By D. M. S. Watson, B.Sc. (Communicated 

 by Prof. W. Boyd Dawkins, D.Sc, F.R.S., F.S.A., F.G.S. 

 Read June 16th, 1909.) 



[Abstract.] 



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. 



