23 



Figs. 42-46. Hemignathus procerus. 



42. Right nostril and base of bill ; enlarged. 



43. Right view of tongue ; enlarged. 



44. The dorsal or spinal feather-tract. 



45. The intestinal convolutions. 



46. Ventral view of the bones of the palate; enlarged. f\ = vomer; tr.pl. = transpalatine 



expansion of palatine; p. int. pi. = posterior interpalatine spur of palatine; /tf.— pterygoid, 



Figs. 47, 48. Hemignathus olivaceus. 



47. The pectoral feather-tracts. 



48. The intestinal convolutions. 



Figs. 49-54. Oreomyza bairdi. 



49. Side view of bill and nostril ; enlarged. 



50. Dorsal view of tongue; enlarged. 



51. Lateral view of left metatarsus. 



52. The spinal feather-tract. 



53. The intestinal convolutions in situ, seen from the right side. 



54. Diagram of the convolutions. 



Fig. 55. Dictum pectorals. Dorsal feather-tracts, after Nitzsch. 

 Fig. 56. DfCEUM trigonostigma. Dorsal view of the tongue ; enlarged. 



FigS. 57, 58. CtEREBA longirostris. 



57, Dorsal view of the tongue ; enlarged. 



58. Ventral view of the tip of the same tongue ; still more enlarged. 



