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 r{forb. ; for 

 age 

 .jyost.palj'or 



ses 



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enl.curt 

 mcteztJ- 



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

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

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

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

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

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

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

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

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

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

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

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

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

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

 trapezium ; turn. c. tympanic cavity ; uln. ulna ; unc. unciform ; vom. vomer ; x, dumb-bell-shaped bone ; zm 



