278 jMTOLOGY OF THE TONGUE OF PARROTS. 



PLATE XXIX. 



Fi". ;i7. Lorliis (lomicella. Tlyoifl apparatus romovefl from tho head and its muscles dissected from the vontral 

 aspect to sliow their rcLitioiis to tho various ])ortioiis of the liyoid bone. The anterior and 

 posterior uiylohyoideus and tho goniohyoidcus have heen removed. On tho left side the eerato- 

 iiyoideiis, hypoglossus obliiiuus, and rectus have been dissected olf, and ou tiie right the lateral 

 and inferior ceratoglossals were similarly removed. (Magnified ] J.) 

 Fi". ;i8. Lorius fl((vo-ji(tUintus. Ventral view of the hyoid apparatus after removal from the head. f)n tho 

 right the lateral and inferior ceratoglossals have been removed, and on the left the meml)rane of 

 the a])ical portion of the tongue and the ceratohyoideus. The anterior and posterior mj'lohyoideus, 

 geniohyoideus, and serpihyoideus have been dissected off. (llagnified 1},.) 

 Fi". '6'J. Eos riciniata. Ventral view after removal from the head. The anterior and posterior myloh3'oideus 

 (serpihyoideus and stylohyoideus) and sternohyoideua have been removed, and on the right the 

 ceratohyoideus and geniohyoideus also. (Magnified l.j.) 

 F'ig. 40. Fiin-hura leucotis. Ventral view. On the right the serpihyoideus, stylohyoideus, and stcrno- 

 hyoideus have been removed, and the uro-hypobranchial tendon and ceratoglossus inferior accessorius 

 reflected to the right. The geniohyoideus has been removed upon both sides. (Magnified 1|.) 

 Fi". 41. Psittacula iiasxerina. Ventral view. On the right, the posterior mylohyoideus, uro-hypobranchial 

 tendon, ceratoglossus inferior accessorius, and ceratoglossus inferior accessorius secundus havo 

 been removed. The sternohyoideus and geniohyoideus havo been similarly removed upon both 

 sides. (Magnified 2;^ nearly.) 

 Fig. 42. Loricuhts qah/idus. Ventral view. On the right, the posterior mylohyoideus, sternohyoideus, and 



ceratoglossus inferior accessorius have been removed. (Magnified 2.) 

 Fig. i''. Pionopsitlacus pileatus. Ventral view. On the left, the posterior mylohyoideus, the ceratoglossus 

 inferior anticus, and the uro-hypobranehial tendon have been removed. The geniohyoideus and 

 genioglossus have been removed upon both sides. (Magnified 1^.) 

 Fi". 44. Platycenus cximnts. Ventral view. On the right, the serpihyoideus and stylohyoideus have been 

 removed, and the uro-hypobranchial tendon has been cut through at its inner attachment, and 

 together with the ceratoglossus inferior accessorius reflected to the right. Upon both sides the 

 geniohyoideus and sternohyoideus have been removed. (Magnified IJ.) 

 Fig. 45. Bolljorhi/nchiis lineolatus. Ventral view. On the left, the serpihyoideus, stylohyoideus, sterno- 

 hyoideus, and geniohyoideus have been removed. The two latter muscles have also been removed 

 on the right. (Magnified li.) 

 Fig. 40. Nestor notabilis. Ventral view of the hyoid muscles after removal from the head. On the right, 

 the posterior mylohyoideus, sternohyoideus, and uro-hypobranchial tendon have been removed. 

 (Reduced |.) 

 Fig. 47. Pezoporus fomosus. Ventral view after removal of the hyoid apparatus from the head. On the 

 left, the posterior m}iohyoideus and the ceratoglossus inferior accessorius have been removed, and 

 the sternohyoideus and geniohyoideus have been similarly removed upon both sides. (Magnified 2.) 

 Fig. 48. Nasiterna pusio. Ventral view after extraction from the head and removal of the anterior and 

 posterior mylohyoideus. Ou the left, the ceratohyoideus, sternohyoideus, ceratoglossus inferior 

 anticus and posticus, and ceratoglossus lateralis have been removed in order to show the 

 hypoglossus obliquus. On the right, the ceratohyoideus and sternohyoideus have been removed. 

 Upon both sides the geniohyoideus has been dissected away. (Four times nat. size.) 

 Fig. 49. EdfcUis pectoralis. Ventral view. On the right, the serpihyoideus, stylohyoideus, eeratohyoideu.^, 

 and sternohyoideus have been removed, and the uro-hypobranchial tendon and ceratoglossus 

 inferior accessorius have been reflected. The geniohyoideus has been removed from both sides. 

 (Magnified 1^.) 

 Fig. 50. Lorius domicella' Lateral aspect of the hyoid apparatus, after extraction from the head and removal 

 of the membrane of the tongue. Tiie relation of the hypoglossus rectus to the mesoglossus is 

 better seen than in any other view. (Magnified 1^.) 

 Fig. 51. Lorkulus c/<ih/ulus. Ventral view. On the left, one-half of the lower bill and of the persistent 

 fascia (/.) has been cut away. (Magnified li.) 



