158 Mr. J. II. Gurncy's Notes on 



Hypotriorchis to be referred to^ the remarkably long-winged 

 and elegant H. concolor. In regard to tliis I may mention 

 that in Mr. Sharpens list of its synonyms be omits '' F«/co 

 schistaceus" of Hempricb and Ehrenberg's ' Symbolae Phy- 

 sicse/ pi. 19, under whicli name good figures are given of the 

 m'ale, female, and Q^g of this species ; also tliat since the 

 publication of Mr. Sharpe's volume, H. concolor has been 

 described and figured in adult and immature dress and with 

 osteological details in Milne-Edwards and Grandidier's work 

 on the birds of Madagascar, vol. i. p. 37, and plates 11, 12, 

 and 12 a. 



Mr. Sharpe, in his article on H. concolor, states that 

 'Wery old examples become leaden black ;'^ but no specimens 

 answering to this description have ever come under my obser- 

 vation. 



Mr. Sharpe has included amongst the synonyms of H. 

 concolor '^ jEsalon tibialis, Kaup/' which seems to me not to 

 be based upon this species, but to be compounded of Le 

 Vaillant's " Faucon a culotte noire '' (a bird which I cannot 

 identify) and Dissodectes ardesiacus. 



It may be worth mentioning, in conclusion, that an appa- 

 rently authentic record of the occurrence of a specimen of 

 H. concolor near Gaillac, in the south of France, on the 3rd 

 October 1873, will be found in the ' Bulletin de la Societe 

 Zoologique de France ' for 1876, p. 91 . 



Of the three American species of the genus Hypotriorchis, 

 H. fusco-cceruleus, H. rvfigularis, and H. deiroleucus, the first 

 has been erected by Mr. Ridgway into a separate subgenus, 

 under the name of " Rhynchofalco " "^ ; but I confess that I 

 do not find sufficient grounds for removing it from its accus- 

 tomed position in the genus Hypotriorchis. 



Mr. Sharpe does not mention the colour of the iris in this 

 species, which is recorded as " dark hazel "'' in the P. Z. S. 

 for 1869, p. 155. 



The geographical range of H. fusco-cceruleus is given by 

 Mr. Sharpe as extending from Mexico to Peru and the 

 Argentine Republic ; but it is found further to the northward 

 * Vide Land Birds of North America, vol. iii. p. 154. 



