140 PIC0-PAS8ERES. 



Xantholaema hsemacephala. 



591. Sternum of male (with right coracoid and scapnla). S. S. 



1919. Presented hy Dr. J. Anderson, F.R.S. 



592. Sternum of male (with right coracoid and scapula). S. S. 



1900. Presented by Dr. J. Anderson, F.R.S. 



Family EHAMPHASTID^*. 



\_Cf. Secbohm, t. c. p. 6.] 



A. Palate desmognathous. 



B. Vomer truncated. 



C. Post-scapular feather-tracts separated on lower back and 



rump. 



Genus RHAMPHASTOS f. 



Linnaeus, Syst. Nat. i. p. 150 (1706). 



Rhamphastos toco. 



Bhamphastos toco, P. L. S. MiiU. Syst. Nat., Suppl. p. 82 (1776) ; 

 Gould, Monogr. llhamph. pi. i. ; Scl. & Salv. Nomencl. Av. 

 Neotr. p. 108 (1873). 



The Toco Toucan. 



Hah. Guiana to Brazil. 



593. Skull (mutilated) 0. C. 1460. 



Presented hy the British Museum. 



594. Skull, with horny sheath of mandibles removed. 0. C. 



14G3. Presented hy the British Aluseum. 



Rhamphastos ariel. 



Rhamphastos ariel, Vigors, iu Zool. Jouru. ii. p. 466 ; Gould, 

 Monogr. llhamph. pi. 12. 



The Ariel Toucan. 



Hah. Brazil. 



* Cf. Garrod, P. Z. S. 1878, p. 462 ; Forbes, P. Z. S. 1882, p. 94 ; Sclater, 

 Cat. B. Brit. Mas. xix. pp. 124-160. 



t A skeleton of Rhamphastos dicolorus is tigured by Dr. A. B. Meyer, in 

 his ' Abbildungen von Vogel-Skeletten,' Lief. xv. Taf. cxlii. 



