202 MISS JOAN B. PROCTER ON THE VARIATION 



Example. 



Length of prrecoracoid 10 units. 



„ scapula (lower border) 5 ,, 



„ „ (free upper edge) 3 - l ,, 



„ shaft 2-2 „ 



Breadth of ,, (distal end) „ 3 - 5 ,, 



Length of supi'a-scapula 9 - 4 ,, 



Text-figure 5. 



Pectoral girdle of Discoglossus pictus, X2; from within. 



Bombinator Merr. 



B. igneus Laur. — Scapula much reduced, subtriangular in 

 shape ; upper edge shorter than distal edge. Shaft vestigial ; 

 pars acromialis much reduced, forming an oblique suture with 

 head of prsecoracoid ; pars glenoidalis much depressed, longer 

 than pars acromialis, from which it is separated by a notch 

 rather than by a cleft. 



Example. 



Length of praecoracoid 10 units. 



,, scapula (lower border) 4'3 ,, 



» (upper „ ) 2-6 „ 



.. .., S 11 £111 1 I ,, 



Breadth of „ (distal end) 3"2 „ 



Length of supra-scapula 9*1 ,, 



Text- figure 6. 



Pectoral girdle of Bombinator ma.vimus, X2; from without. 



B. pachypus Blgr. and B. orientalis Blgr. — Scapula as in 

 B. igneus. 



B. maximus Blgr. — Scapula as in B. igneus in shape and pro- 

 portions, but differing in that the upper border and adjoining 



