Sclater on the Systema Avium. 73 



12. Setophaga picta. Swain. Painted Redstart. — $ 

 and 9 . Chiracahua Mountains, April 7. 1S80. 



13. Pipilo aberti. Baird. Abert's Towhee. — ^, Big Sandy 

 Creek, Arizona, Feb. 7, 18S0. 



14. Aphelocoma sordida arizonae, Ridg. Arizona Jay. 

 — Three specimens, two $ , one 9 1 Chiracahua Mountains, taken 

 April 6-J, 1SS0. 



15. Empidonax fulvifrons pallescens. Coues. Buff- 

 breasted Flycatcher. — $ , Chiracahua Mountains. April. 

 12, 1880. 



16. Centurus uropygialis. Baird. Gila Woodpecker. — 

 $ . Tucson, March 8. 1SS0. 



17. Colaptes chrysoides (Malk.) Baird. Malherbe's 

 Flicker. — $ , Tucson. March 7. 1SS0. 



REMARKS ON THE PRESENT STATE OF THE 

 SYSTEMA AVIUM. 



BY P. L. SCLATER.* 



[Concluded from p. 37.] 



4. Coccyges. 



The remaining families of Nitzsch's Picariae (i.e. the Coccygo- 

 morphae of Huxley) stand associated together in our ' Nomencla- 

 tor' under the name Coccyges, given to them by Sundevall in 

 1835 (K. Vet. -Ac. Handl. 1835, p. 69), and are divided accord- 

 ing to the structure of their feet nearly after the plan suggested 

 by Prof Huxley (P. Z. S. 1S67. p. 466). I fear, however, that 

 this is not likely to be a permanent arrangement. Although we 

 may not at once go to the length of following Prof. Garrod in 

 separating the whole class of Birds into "Homalogonatas " and 

 k 'Anomalogonatae." there can, I think, be no question that some 

 weight must, in future, be allowed to the presence or absence of 

 the, ambiens muscle, and that it must be allowed that the Cuculidae 

 and Musophagidae, in possessing this character and in other 

 respects, standee/- sc among the Picariae of Nitzsch, and show 

 much affinity with the Gallime. I believe therefore that it will 



* From the " Ibis," 4th Ser., Vol, IV, pp. 399-411, Oct., if 



