XXXVI 



INTRODUCTION. 



Fig. 19. 



(From P. Z. S. 1895, p. 171, fig. 5.) 



B 



Hyoid of Trichoglossus ornatus. Lettering as before. 



The humerus more nearly approaches the length of the ulna, while the latter is more 

 exceeded in length by the manus than in Psittacus ; but in the details of their structure the 

 bones of the wings offer no noteworthy differences in the two genera. 



The lielvis, seen dorsally, shows that the anterior ends of the ilia do not project 

 outwards so much in Xorius. Viewed laterally, the obturator foramen may be seen to be 

 completed by the junction of a small ventral sweep of the iscbium with a small process of 

 the pubis ascending to meet it. Of the former there is but a rudiment in Psittacus erithacus. 

 The ischium is relatively, as well as absolutely, shorter in Lorius flavopalliatus and descends 

 more postaxiad, so that its ventral margin forms a more decided angle with that of the ilium. 



The dorsal portion of the hinder margin of the ischium is gently convex, but develops no 

 ilio-caudal spine, which forms a marked prominence in Psittacus erithacus. 



