METEIOEHYNCHTTS SUPEECILIOSUM. 185 



Pelvis : 



Ilium : length of dorsal border 5-3 



,, acetabular border 5"8 



Ischium: length of sjTnphysial border 11-9 



„ from articular surface to posterior angle . 12-5 



Pubis: length ll'O 



width of distal expansion 4-6 



Hind limb : 



Femur : length in straight line 25'4 



greatest diameter of head 4-1 



Tibia: length 8-3 



Fibula : length 3-2 



First metatarsal : length 7*8 



R. 3016. Skull (imperfect), mandible, right coracoid and scapula? (text-tip;. 70, B), humeri, 

 (?) radii, and ulna (text-fig. 70, A) of a large individual, probably belonging to the 

 present species. 



The skull is much broken, but the palate is nearly all preserved. The mandible is 

 well preserved and the teeth, of which several are in situ, show the well-developed 

 ridging of the enamel usually found in the present species. The bones of the for? 

 limb (see text-fig. 70, A) are the only specimens in the whole collection which definitelv 

 prove that the paddle-like form, similar to that found in Geosaurus, also occurs in 

 Metriorhynckus, though perhaps in a less modified condition. 

 The dimensions (in centimetres) of this specimen are : — 



Mandible : length (approx.) 88-0 



length of symphysis 38 - 



depth at coronoid angle 9"6 



Coracoid (text-fig. 70, B) : length 9-7 



width of lower end . . (approx.) 6*0 



neck 2-0 



„ articular end 2-8 



Scapula (text-fig. 70, B) : length 8-7 



width of articular end, 2-5 



„ upper end l - 9 



Humerus (text-fig. 70, A) : length 9"8 



width of head 2-5 



,, at deltoid crest 3-4 



,, of distal end 2-1 



Eadius(?) (text-fig. 70, A): length 3-2 



width 2-7 



Ulna (?) (text-fig. 70, A) : length 3-7 



width 2-7 



I'AKT II. 2B 



