nr 



FIG. 1058. Skeleton of male Ornithorhynchus . Ventral view. The right fore limb has been separated and 

 turned round so as to bring into view the dorsal surface of the manus. The lower jaw is removed, oca 

 tars, accessory tarsal bone supporting the spur ; ant. pal. for. anterior palatine foramen ; atl. atlas ; <i*t. 

 astragalus ; ax. axis ; 6s. oc. basi-occipical ; bs.sph. basi-sphenoid ; calc. calcaneum ; cbd. cuboid ; cerv. rb. cervical 

 rib ; dav. clavicle ; cond. for. foramen above inner condyle of humerus ; cor. coracoid ; cun. cuneiform of 

 carpus ; ect.cun. ecto-cuneiform ; ent.cuit. ento-cuneiform ; ep.cor. epicoracoid ; ep.pb. epipubis ; fb. fibula ; f< m. 

 femur ; glen, glenoid cavity of shoulder joint ; glen, glenoid cavity for mandible ; hum. humerus ; il. ilium ; 

 < n. cond. inner condyle of humerus; inf. orb. for. points to position of infra-orbital foramen; inj'r. proc. 

 interior processes of caudal vertebrae ; for. mag. foramen magnum ; int. rbs. intermediate ribs ; itch, ischium ; 

 utacf. magnum of carpus ; max. maxilla ; max. for. maxillary foramen ; metat. /, first metatarsal ; tiutat. V, fifth 

 metatarsal ; post. pal. for. posterior palatine foramen ; pr.max. pre-maxilla'; pr.st. pre-sternum ; pv.h. pubis ; 

 out. cond. outer condyle of humerus ; rod. radius ; scap. scapula ; scaph. scaphoid of tarsus ; scaph.lv n. scapho- 

 lunar; ses. sesamoid 'bones of wrist; sp. tarsal horny spur; lib. tibia; trd. trapezoid ; trm. trapezium; (,-<></<. 

 ma). .greater trochanter of femur; troch. min. lesser trochanter ; tym. c. tympanic cavity; ttZrt.ulna; v.nc. 

 uncitorm ; vom. vomer; x, dumb-bell shaped bone ; zyg. zygomatic arch; IV, digits of manus. 



