APPENDIX. 



159 



crombec. Prof. Reichenbach, not satisfied with this, has gone so far 1 as to establish a new genus 

 (Crombus) on the female, and to place it in a different part of the system ! In his ' Conspectus,' 

 Prince Bonaparte retains this form near the Cuculida, but makes an independent family of it 

 (Leptosomidee}. In his more recent ' Conspectus Systematis Ornithologise ' 2 he has removed it 

 into the neighbourhood of the American Bucconida. Before attempting to solve the question as 



FIG. 1. 



Head of male Leptosoma 



to which of these two views is most correct, I must ask leave to call the Society's attention to 

 some remarkable points in its structure, which appear to have been hitherto unnoticed. 



FIG. 2. 



Outline of the skull of Leptosoma. 



The first thing which strikes one as remarkable in examining the external characters of Lepto- 

 soma discolor is the extreme elongation of the feathers of the lores and their projection forward over 



' Handb. d. Sp. Orn.,' ii, p. 51. 

 - ' Ann. d. Sc. Nat., 5 ser. 4, ' Zool.,' i, 1854. 



