of one vertebra pramrta iU articulation between the sacrum and the four anchyloatd donalt, 

 but it* ppine KM coalesced with that of the sacrum. Than we 20 vertebra; between the 

 lull and the Mcrum, of which the but fix bear moveable ribs : of thee the Uit four |Mun 

 re articulated to the tternum by hvmapophyaei ; there ie a seventh pair of ribs attached U> 

 the sacrum. There are 6 caudal vertebra. 



Genus Penelope. 

 1402. The skeleton of the Crested (Juan (Penelope crutata). 



The sternum is narrow, with four deep posterior notches and a short but deep keel ; the 

 I is perforated both vertically and transversely. The arch of the furculum i 

 narrow. Four of the dorsal vertebne have coalesced into one bone ; a single frw 

 i this and the sacrum. The calcaneal ossicle is preserved in tin- 



left leg. The metatarsus of the back-toe is moderately strong and twisted ; the lacrymal* 

 are hugely developed. There are 21 vertebra! between the skull and sacrum, the last six of 

 which support ribs : of these the first two pairs are free ; the rest have hsEmapophysri which 

 join the sternum ; the last (seventh) pair of ribs are attached to the sacrum, and are also 

 joined to the sternum by luemapophyses that support rudiments of another pair. There are 

 5 caudal vertebne. 



Miu. Soitk. 



1403. The sternum and trachea of the Marail Guan (Penelope Mar ad}. 



This specie* is crestless, and the trachea, in both sexes, forms a curve at the upper ami 

 fore part of the sternum, before it divide* into the bronchi. See the ' Linnaean Transactions,' 

 vol. ir. pi. 9. fig. 2. 



Hunter tat. 



Genus Paw. 



1404. The skeleton of a Peacock (Pace crutahu). 



There is one vertebra with a free centrum between the four coalesced dorsals and the 

 sacrum, but the spine of thl i* partially anchylosed by the ossified bone-tendon* with both. 

 The terminal coalesced caudal vertebne, forming the so-called ' ploughshare-bone,' oevelopr 

 a flat osseous platform above, for the support of the long dorsal plumes, or ' tail-covert*,' 

 which the Peacock raise* and spreads by the action of the true tail-feathers, with the aid of 

 peculiar muscles. The calcaneal ossicle is preserved in the right leg : a strong bony |.nr i- 

 developed from the inner and posterior ridge of the coalesced metatarsus, which seems to 

 the proximal part of that element of the back toe. The number of vertebne be- 

 i the skull and sacrum is 20, ol which the last six bear moveable ribs : of these the first 

 two pairs are free ; the rest are joined to the sternum by haemapophyset ; a seventh pair of 

 rib* articulate with the sacrum. 



Mtu fionlk. 



