570 PEOCEEDINGS OF UNITED STATES NATIONAL MUSEUM. [1885. 



before us, and which, without exceptioD, differ uniformly and decidedly 

 in the two regions. 



Laying aside the males, which though themselves readily distinguisli" 

 able are much less obviously difierent than the females, we find, upon 

 comparison of two adult females from Yucatan (Merida) with thirty 

 from the Eastern United States, that while the former have a very rich 

 tawny ochreous general coloration and hlarlc capistrum, all of the latter 

 have the colors many shades paler and grayer and the capistrum gray 

 instead of black. In fact, coccineus presents exactly the opposite ex- 

 treme from igneus in regard to the color of the throat, the difference 

 from true G. cardinaUs being, if anything, even greater. Besides, cocchieus 

 is always a decidedly smaller bird, the average difference in length of 

 wing and tail amounting at least to .25 of an inch. 



An imjiortant factor in the case has been unfortunately misunderstood 

 by Messrs. Salviu and Godman, which is that of all birds possessing 

 the«power of flight the birds of this genus are perhaps the most seden- 

 tary. Even at the very northern extreme of its range, G. cardinaUs is a 

 winter resident, enduring, without apparent discomfort, a cold of —28°. 

 And it is perhaps not too much to say that, except where transported 

 accidentally, an individual of this species rarely, if ever, wanders so 

 much as ten miles from the place of its birth ! 



Family ICTEKID^. 



f34. DoUcJionyx orijzivorus (Linn.). Devis collection.] 

 -i' 35. Icterus cucullatus Swains. 



Two males, three females, the former apparently identical with Yuca- 

 tan examples, 



-/-36. Quiscalus macrourus Swains. 

 Two specimens. 



Family TYRANNID^. 



-f 37. Tyrannus dominicensis (Gmel.), 

 One example. 



-\ 38. Tyrannus melancholicus couchi (Balrd). 



Twelve specimens, not satisfactorily distinguishable from mainland 

 examples, although they have purer ashy heads, grayer backs, and 

 somewhat larger bills than most of the latter. 



-+ 39. Myiarchus platyrhynchus Eidgw. 



Miiiarchiis 2}la>yrJi}/nchus,Rii>GW. Descr. New Sp. B. Cozumel, February 26, 



1885, 3. 



Sp. char. — Similar to M. harhirostris, Swains., of Jamaica, but upper 

 parts much grayer, the pileum not so dark, and the upper tail-coverts, 

 Tcctrices, and wing-feathers edged with darker rusty. 



Adult 9 (No. 102,738, U. S. Nat. Mus., Cozumel) : Above dull brown, 



