TURDUS. 



2T 



only very slightly fulvous, without any well defined edging. This 

 is also the case with some Costa Rica skins. 



Mexican specimens seem to have shorter bills than Guatemalan. 

 In all there is a decided bare space behind the eye, less marked, 

 however, especially around the eye, than in T. gymnoiMhalmus. 

 The latter species is otherwise somewhat similar, diflfering mainly in 

 the absence of the cinnamon tinge to the under parts of the body. 



Male and female specimens from Panama, in Mr. Lawrence's col- 

 lection, exhibit both extremes of coloration of the quills as referred 

 to above. 



I do not consider the evidence before me favorable to the separa- 

 ration of T. csesius from the original grayi ; and therefore, for the 

 present, prefer to unite the two species. Planesticus luridus, Bon. 

 Notes Orn. Delattre, 28, New Grenada, probably, as suggested by 

 Sclater, belongs here also. 



It is difficult to say to which of the Mexican Planestici the Turdus 

 tristis of Swainson belongs. His description of "olive brown, be- 

 neath whitish ; chin with black spots ; under wing coverts pale fer- 

 ruginous ; bill and legs brown," really suits T. leucauclien better 

 than grayi, to which it has generally been referred, but is too far 

 from the truth to admit of being identified with either. 



1.3,664. 

 33,570. 

 22,359. 

 9 

 20,394. 

 30,646. 

 30,859. 

 30,481. 



1.25; 1.05. Inner edges of quills cinnamon ; sharply defined. 



1.10. " " 



1.13. Cinnamon ; not sharply defined. 

 1.15. " sharply defined. 



1.15. Paler, only a trace of cinnamon. 

 ; 1.17. 



1.12. Cinnamon; sharply defined. 

 1.10. 



1.05. Paler, not edtted with cinnamon. 

 1.10. " ' " 



' T. casius, Lawr. 



