486 APPENDIX. 



of tail 3 feet 3 inches, from one extremity of the wing to the 

 other 4^ feet. Tail square, and of a greyish-white colour, con- 

 sisting of 12 feathers, length 1^ inches. Legs of a blood-red 

 colour, feathered to about the middle of the tibia. Tarsus, 

 length 4 inches. Hab. Banks of the Murray River, interior of 

 New Holland. From the slender bill, the head, and small part 

 of the neck being destitute of feathers, this bird, the Professor 

 remarked, formed a connecting link between the two divisions 

 of the genus Ibis, Cuv., the specific term spinicollis was applied 

 to it from the forepart of the neck being covered with spines. 



Tanagra nigricephala — Bill bluish-black, conical, and much 

 shorter than the head ; length 5 lines, gap 7 ; upper mandible 

 notched at the point, and slightly hooked. Nostrils circular 

 and naked, inserted into the base of the hill. Head of a bluish- 

 black colour ; from the outer angle on both sides of the nostril a 

 band of bluish-black extends across the temples to the root of the 

 neck ; from the inner, one of greyish-white extends across the 

 ophthalmic region down to the nape. Throat white, with a blu- 

 ish-black band on both sides, extending narrow from the base of 

 lower mandible, and becomes very broad as it reaches the neck. 

 Body, above of a saffron-yellow, approaching to siskin-green ; 

 below of a bright golden-yellow, mixed with orange. Wings of 

 a bluish-black colour, with all the primary and secondary quills 

 tipped with greyish-white, the first primary quill excepted ; 

 third quill-feather longest, second and fourth nearly equal, and 

 longer than the first ; upper wing-coverts bluish-black, mixed 

 with greenish-yellow ; under, yellowish-white. Tail greyish- 

 black, and nearly square ; length 3^ inches, and consisting of 9 

 feathers; upper wing-coverts greenish-yellow, under greyish- 

 white ; feathered to the tarsi." Tarsus, length 8 lines, and co- 

 vered by 5 very broad scutell^ ; middle toe 9 lines. Hab. West 

 India Islands. In the shortness and form of the bill, in the 

 length of wings in proportion to the tail, in the arrangement of 

 the quill-feathers of wing, the external toe united to middle by 



