470 Annals of the Carnegie Museum. 



450. Icterus mesomelas carrikeri Todd. 



Icterus mesomelas (not Psarocolius mesomelas Wagler) Allen, Bull. Am. 

 Mus. Nat. Hist., XIII, 1900, 162 (Cacagualito). 



Icterus mesomelas carrikeri Todd, Proc. Biol. Soc. Washington, XXX, 19 17, 

 4 (Fundacion; orig. descr. ; type in coll. Carnegie Mus.). — Apolinar Maria, 

 Bol. Soc. Cien. Nat. Inst. La Salle. VI, 191 7, 146 (reprint orig. descr.). 



Five specimens: Fundacion. 



The type of Cassin's Icterus salvinii is a Costa Rican specimen, 

 agreeing- with a series from that country in the collection of the Carnegie 

 Museum. From these all the Colombian specimens examined (in- 

 cluding, besides the above, five skins from Jaraquiel, in the Depart- 

 ment of Bolivar, and one each from " Bogota " and the Rio Atrato) 

 differ at a glance in their evidently smaller size (the bill especially), 

 brighter, more orange general coloration, and more restricted black 

 throat-patch. In all these respects they resemble Icterus mesomelas 

 taczanowskii Ridgway, a series of which (including the type) has 

 been examined in this connection, but differ therefrom in having the 

 white edgings to the secondaries very narrow or wanting, precisely as 

 in /. m. salvinii. This difference is clearly not seasonal, because the 

 respective series compared were secured at the same time of year 

 (September and November), and if mesomelas and salvinii can be 

 separated on this basis, so also can tacsancnvskii and the present form. 

 Mr. Ridgway (Bulletin U. S. National Museum, No. 50, II, 1902, 

 307, footnote) refers to the peculiarities of birds from central Co- 

 lombia, intimating that they may be intergrades between salvinii and 

 taczanowskii. His measurements show that Panama birds (males at 

 least) average somewhat smaller than those from Nicaragua and 

 Costa Rica, and it is of course possible that they too may belong to 

 the form under discussion. 



Measurements. 

 No. Sex. Locality. Win?. Tail. Bill. Tarsus. 



49598 cf Fundacion 95 : °2 21 28.5 



4971 1 £ Fundacion (Type) 95 l °2 2I 3° 



49747 c? Fundacion 92 102 21 29 



49748 $ Fundacion 91 108 22 30 



52801 J 1 Jaraquiel 96 105 22 31 



52872 £ Jaraquiel 99 J o8 23 28 



52873 c?' m> Jaraquiel 92 102 21 29 



49599 ? Fundacion 92 100 22 28 



52802 $ Jaraquiel 90 103 22 29 



52871 Ojm. Jaraquiel 9° 99 22 27 



