ceri/.rb 



ci*v/ ca r 



^fc^ep.cor 

 -cor 



h U./TI 



FlO. 1139. Skeleton of male Ornithorhynchus. Ventral view. The right fore-limb has been separated ai 

 turned round so as to bring into view the dorsal surface of the manus : the lower jaw is removed, ace. ta r , 

 accessory tarsal bone supporting the spur ; ant. pal. for. anterior palatine foramen ; all. atlas ; ast. astragalus ; o 

 axis ; bs. oc. basi-occipital ; bs. sph. basi-sphenoid ; calc. calcaneum ; cbd. cuboid ; cerv. rb. cervical rib ; clav. clavicl 

 cond.for. foramen above inner condyle of humerus ; cor. coracoid ; cun. cuneiform of carpus ; dent, position of hon 

 teeth ; ect. cun. ecto-cuneiform ; ent. cun. ento-cuneiform ; ep. cor. epicoracpid ; epist. episternum ; ep. pb. epipubi 

 fb. fibula ; fern, femur ; for. mag. foramen magnum ; glen, glenoid cavity of shoulder- joint and glenoid cavi 

 for mandible ; hum. humerus ; in. cond. inner condyle of humerus ; inf. orb. for. points to position of infra-orbii 

 foramen ; infr. proc. inferior processes of caudal vertebrae ; int. rbs. intermediate ribs ; isch. ischium ; mt 

 magnum of carpus ; max. maxilla ; max. for. maxillary foramen ; metat. I, first metatarsal ; metat. V, fifthmetat! 

 sal ; nas. cart, nasal cartilage ; obt. obturator foramen ; ol. olecranon ; out. cond. outer condyle of humeru 

 pal. palatine ; pat. patella ; post. pal. for. posterior palatine foramen ; pr. max. pre-maxilla ; pr. st. presternur 

 pter. pterygoid ; pub. pubis ; rad. radius ; scap. scapula ; scaph. scaphoid of tarsus ; scaph. lun. scapho-lunar ; s 

 sesamoid bones of wrist and ankle ; sp. tarsal horny spur ; sq. squamosal ; tib. tibia ; trd. trapezoid ; it 

 trapezium ; tym. c. tympanic cavity ; uln. ulna ; unc. unciform ; wm. vomer ; x, dumb-bell-shaped bone ; z 

 zygomatlc arch ; I V, digits of manus. 



