4 6S 



MANUAL OF ZOOLOGY 



pn.Jor' 



Tiu. 



adult. The hyoid apparatus (Fig. 280), is of characteristic 

 form, having an arrow-shaped body (/'. hy) with a short pair 

 of anterior cornua (c. hy) derived from the hyoid arch, and 

 a long pair of posterior cornua {c. br., ep. br) from the first 



branchial. The colu- 

 mella is a rod-shaped 

 bone ankylosed to the 

 stapes, and bearing at 

 its outer end a three- 

 rayed cartilage or ex- 

 tra-cohtmclla fixed to 

 the tympanic mem- 

 brane. 



The shoulder-girdle 

 (Fig. 276) is quite un- 

 like that of other Cra- 

 niates. There is a pair 

 of stout, pillar - like 

 coracoids (cor) articu- 

 lating with deep facets 

 on the anterior border 

 of the sternum and 

 directed upwards, for- 

 wards, and outwards. 

 The dorsal end of each 

 is produced into an 

 acrocoracoid process 

 (acr. cor), and below 

 this, to the posterior 

 Fig. 281 — Coiumba Uvia. Skeleton of the left aspect of the bone, is 



wing. cp. mti-'p, carpo-nretacarpus; hu, hn- . . . 



menis; //;./, phalanx of first digit; pns , attached by ligament a 



p/1.2" , phalanges of second digit; ph.?, 1 1 j j 



phalanx of third digit; pn. for, pneumatic SaDre-Shaped SCOpl/hl 

 foramen; ra , radius; ra , radiale ; id, ulna; / ,\ i • i 1 



ui', uinare. \ SC P) which extends 



ph.1 



