Vol. '69.] SKELETON OF ORMTHODESMUS LATIDENS. 41 9 1 



Pre-postaxial diameter at the proximal end of the radius 30 



The same at the distal end 38 



■ The same at the centre of the shaft 7 



Pre-postaxial diameter of the proximal end of the ulna 60 



The same at the distal end 52 



The same at the centre of the shaft lj> 



Length of the pteroid 96 



Breadth of expansion at the proximal end of the pteroid 10 



Length of the lateral carpal 25 



Pre-postaxial diameter of the proximal carpal 49 



Pre-postaxial diameter of the distal carpal .-... 4& 



Length of the carpus v 28 



Pre-postaxial diameter of the proximal end of the wing- 



metacarpal 56 



Length of portion of the proximal end of the first wing-phalange, 



Atherfield specimen No. 2 318' 



Dorso-ventral diameter of the proximal end 54 



Dorso-ventral diameter of the distal end 44 



Dorso-ventral diameter of the proximal end of the second wing- 

 phalange 44 



Length of the proximal portion of the third wing-phalange, 



Atherfield specimen No. 1 127 



Length of the sternal plate 65 



Breadth of the same 45 



Length of the keel 70 



Depth of the same 60 



Depth of the ischium from the acetabulum to the anterior 



ventral angle 76 



Length of the femur as preserved. (Distal end slightly water- 

 worn, but showing thickening for the articulation.) 200 



Pre-postaxial diameter of the centre of the shaft of the femur... 9 



Dorso-ventral diameter of the same 12 



The following measurements have been obtained by accepting 89 mm. 

 as the length of the missing block from Atherfield specimen No. 1 : — 



Length of the skull 560 



Length from the tip of the muzzle to the centre of the orbits ... 500 



Length of the mandibles 423 



Length of the radius 368 



Length of the ulna 381 



Length of the first wing-phalange 393 



Length of the second wing-phalange 388 



Estimated spread of wing, from tip to tip, and allowing 



for the natural curve about 5 metres. 



I have much pleasure in acknowledging the ever-ready assistance- 

 in the preparation of this paper afforded to me hy Dr. A. Smith 

 Woodward, F.R.S., and Dr. C. W. Andrews, F.R.S. 



Bibliographies are to be found in : — 



E. T. Newton, ' On the Skull, &c. of Scaphoqnathus pwdoni ' Phil. Trans., 



Eoy. Soc. ser. B, vol. clxxix (1888) p. 503. 

 K. A. Zittel, ' Traite de Paleontologie ' vol. iii (1893). 

 F. Plieninger. 'Die Pterosaurier der Juraformation Schwabens' Palas- 



ontographica, vol. liii (1907) pp. 210-17. 



