736 DR. J. MURIE ON THE HORNED'TRAGOPAN. [Juue 18, 



exceedingly lithe conical body, which springs from the post frontal 

 bone. It is composed of densely packed nbro-cellular tissue, with a 

 great quantity of pigment distributed throughout. 



8. Growth of the pseudo-horn is apical; and elevation is through 

 a musculo-aponeurotic act, not by vasculo-ereetile tissue. 



( J. Deflection and exposure of the wattle follows from its arterial 

 injection, being provided with a rete mirabile whose vessels run chiefly 

 longitudinal aud parallel. The occasional rich red hue is a san- 

 guineous effect. 



10. Retraction of the wattle is partially an involuntary act, the 

 sequence of its containing abundance of nbro-eiastic tissue and un- 

 striped muscular fibre. 



EXPLANATION OF THE PLATES. 

 Plate LX. 



Fig. 1. A view of the dissected occiput and back of the neck of a young female 

 Honied Tragopan, showing the nuchal and temporal muscles, above 

 which are the two rudimentary horns, h, It *. 



2. Profile of an adult £ Geriornis satyra, Linn., the erectile horns. // being 



partially exposed by the feathery crest being slightly raised. 



3. An under view of the same head, with the wattle as it appears when the 



adjoining marginal feathering is tucked out a little way. 



4. Exhibits a second stage of the mandibular region, with a full view of the 



contracted wattle, as the cheek- and throat-feathers are thrust widely 

 out. 



All the above figures are of natural size, and drawn from the 

 specimen immediately after death. 



5. Reduced sketch of the full facial display of the male bird, after Mr. T. 



W. Wood, in ' Int. Obs.' as quoted, antca, p. 730. 



Plate LXI. 



Fig. 6. Side view of the head of the second male spoken of in the text. The 

 feathers aro partly removed ; the blue skin cut open on one side of the 

 pseudo-horn brings into view the dark core beneath. Wattle seen late- 

 rally and from behind, as if injected. 



7. Dissection of the posterior half of the side of the head, the skin &o. being 



cut away, and exposing the pseudo-horn and tissues connected there- 

 with. 



8. A mesial longitudinal section of the horn, and its blue investment of 



skin. 



9. A transverse section of the same near its root. 



10. Another cross section from about the middle. 



11. A third slice, cut transversely near the tip of the horn. 



12. A magnified view of the core of the pseudo-horn cut horizontally. Il 



shows the meshwork of pigment-material and other substance of 

 which it is composed. 



13. A small portion of the elastic fibro-cellular tissue, with its pigmental- \ 



granules teased out. Shown as a microscopic preparation under a 

 moderate power. 



14. The under surface of the mandible and throat of the same <? Tragopan, 



displaying the outspread membrano-vaseular wattle. On t he left 

 moiety the skin is intact, and one portion shows the natural wrinkled 

 condition without injection; the other coloured, as if engorged with 

 blood. On the right side of the figure the anterior layer of skin has 

 been dissected off to display (he rete mirabile when injected. 



Excepting nos. 12 and 13, the figures in this Plate are represented 

 of nearly natural dimensions. 



