PLATE XVI. 



1. Par us cemltetts 1 (adult). 



2. Phasianus colchicus" (9 days incubation). 



3. Do. (do.) 



4. 



5. 



6. 



9. 



Do. 

 Do. 



Do. 



(do.) 

 (do.) 



(do.) 



7. Do. (do.) 



8. Gattus domesticus* (10 days incubation). 



Do. 



(do.) 



SIZE. 



Sternum; lower view . 3 diam. 



Sternum ; lower view . 6 do. 

 Section of fore part of sternal 



keel . . 24 diam. 

 Left Shoulder-plate; outer view 6 do. 

 Head of clavicle, with carti- 

 lage-segment . . 40 do. 

 Base of clavicle, with inter- 

 clavicle, and fibro-cartilagi- 

 nous rim ; side view . do. 

 do. front view . do. 

 Base of clavicles, with inter- 

 clavicle and fibre-cartilage ; 

 front view . . 20 do. 

 Head of clavicle, with cartilage- 

 segment; side view . do. 

 Sternum ; lower view . 3 do. 

 do. side view . do. 

 Section of sternal keel . 1 do. 

 Sternum ; lower view . 4 do. 

 Shoulder-girdle and Sternum ; 



side view . . do. 

 Upper part of clavicle and car- 

 tilage-segment ; side view . 10 do. 

 Lower part of furcula ; side view do. 

 do. hinder view do. 

 Section of sternal keel . 100 do. 

 do. . . 20 do. 

 do. .8 do. 

 do. . .100 do. 

 do. . . 20 do. 

 Lower part of furcula; hinder view do. 

 Furcula; front view . 10 do. 

 do. lower part . 30 do. 



See pp. 182 184. 

 See pp. 146148. 



See pp. 184 ] 86. 

 See p. 155. 



