T-2ENI0PTERINA 6 



Neotropicalium,' is anything more than provisional. It is chiefly 

 hased upon that of the veteran ornithologist Dr. J. Cabanis of Berlin, 

 as propounded in the ' Museum Heineanum ' and elsewhere. Future 

 anatomical study on the lines pursued by Garrod and Forbes may 

 eventually succeed in giving us a much better system than anything 

 that cau be obtained from the study of the dried skins. 



I regret to say that I have quite failed in my attempt to draw up 

 anything like a key to the genera of Tyrannidae as they are here 

 arranged. I have therefore given under the head of each genus 

 some of the more salient points by which its members may be 

 recognized. Even as regards the subfamilies, I can only offer the 

 following rather vague sketch of what I conceive to be the best way, 

 so far as our present information goes, of arranging the principal 

 groups, which, however, must be regarded as purely provisional. 



Key to the Subfamilies. 



A. Feet strong ; tarsi stout, eloDgated ; 



habits more or less terrestrial ; co- 

 loration grey, black, and white .... 



B. Feet weak ; tarsi thin; forest-dwellers; 



coloration olive and yellow. 



a. Bill depressed ; rictus bristled .... 



b. Bill compressed ; rictus smooth . . 



C. Feet strong; tarsi short but strong; 



habits arboreal, but frequenters of 

 more open spaces ; coloration olive, 

 grey, white, and yellow 4. TYRANNINJE, p. 189 



1. TJENIOPTERINM, p. 3. 



[p. 64. 



2. PLATYRHYNCHINjE, 



3. ELAINE1NJZ, p. 109. 



Subfamily I. T^ENIOPTERIN^]. 



The Tceniopterince are nearly the equivalent of the group called 

 Fhivicolince by Swainson, and embrace the genera with strong, 

 ambulatorial feet, that frequent open spaces and sides of rivers, and 

 are not found within the forests. They are met with in such 

 situations principally in Southern America, being much less frequent 

 north of Panama, where forms of Tyrannince appear to take their 

 place, and being only represented in North America by one or two 

 species. 



Index to the Genera. 



Agriornis, p. 4. 

 Myiotheretes, p. 8. 



T^NIOPTERA, p. 10. 

 OCHTHODI^TA, p. 16. 

 OCHTHCECA, p. 18. 



Mecocerculus, p. 27. 



OCHTHORNIS, p. 31. 



Sayorkis, p. 32. 

 Fluvicola, p. 35. 

 Arundinicola, p. 37. 

 Alectrurus, p. 38. 



12. Cybernetes, p. 40. 



13. Sisopygis, p. 41. 



14. Cnipolegus, p. 42. 



15. Lichenops, p. 48. 



16. Mi t scipipra, p. 49. 



17. Copurus, p. 50. 



18. Machetornis, p. 52. 



19. Muscisaxicola, p. 53. 



20. Centrites, p. 60. 



21. Mtjscigralla, p. 63. 



b2 



