Todd-Carriker : Birds of Santa Marta Region, Colombia. 471 



The four races of this species here recognized may be diagnosed 

 as follows: 



a. General coloration more yellowish ; black throat-patch more extended. 



b. Smaller; secondaries with decided white edgings. (Mexico to Hon- 

 duras.) Icterus mesomelas mesomelas. 

 b'. Larger; secondaries without white edgings. (Nicaragua to Panama.) 



Icterus mesomelas salvinii. 

 a'. General coloration more orange ; black throat-patch more restricted. 



b. Secondaries with white edgings very narrow or wanting. (Colombia 



and Venezuela.) Icterus mesomelas carrikeri. 



b'. Secondaries with conspicuous white edgings. (Western Ecuador and 



Peru.) Icterus mesomelas taczanowskii. 



Mr. Smith sent in one specimen of this bird from Cacagualito, and 

 the writer searched for it at all localities visited, and was almost on 

 the point of giving up getting it. when it was finally discovered on the 

 last trip to Fundacion. First a pair were taken in a few trees near 

 the shore of the marsh, and later four more were shot, also in the 

 vicinity of the marshes. The Magdalena basin is evidently its center 

 of abundance in this region, and the individual taken at Cacagualito 

 was probably a rare straggler on that side. 



451. Icterus nigrogularis nigrogularis (Hahn) 40 . 



Icterus xanthornus (not Coracias xanthomas Linnaeus) Lawrence, Ann. Lye. 

 Nat. Hist. N. Y., IX, 1869, 272. in text ("Santa Marta")- — Wyatt, Ibis, 

 1871, 329 (Santa Marta). — Salvin and Godman, Ibis, 1880, 123 (Santa 

 Marta; habits). — Sclater, Ibis, 1883, 368 (Santa Marta, in range). — Ridg- 

 way, Proc. U. S. Nat. Mus., VII, 1884, 174, in text ("Santa Marta"). — 

 Sclater, Cat. Birds Brit. Mus., XI, 1886, 380 (Santa Marta). — Richmond, 

 Proc. U. S. Nat. Mus., XVIII, 1896, 675 ("Santa Marta"; meas.). — Bangs, 

 Proc. Biol. Soc. Washington, XII, 1898, 138 ("Santa Marta"). — Allen, 

 Bull. Am. Mus. Nat. Hist., XIII, 1900, 162 (Santa Marta and Bonda) ; XXI, 

 1905, 290 (Bonda; descr. nest and eggs). 



Icterus xanthornus xanthornus Ridgway, Bull. U. S. Nat. Mus., No. 50, II, 

 1902, 300 (Santa Marta; crit. ; references). 



Sixteen specimens : Santa Marta, Bonda, Mamatoco, Punto Caiman, 

 Fundacion, and La Tigrera. 



No characters exist for separating the Colombian birds from more 

 eastern examples of the species, as suggested by Mr. Ridgway. The 

 examination of a large series from various parts of its range shows 



40 Cf. Hellmayr, Verhandlungen der Ornithologischen Gesellschaft in Bayern 

 XIV, 1919, 132. 



