386 Annals of the Carnegie Museum. 



chocyclus, etc. Externally, the nest is formed of blades of dead grass 

 and finer vegetable shreds and fibers, lined with a large quantity of 

 soft plant down, varying in color from soiled white to deep rusty 

 buff. In some instances the nest consists principally of plant down, 

 mixed, especially externally, with enough fibrous material to give 

 firmness. 



" The vertical length of the nest proper is about 4 to 4% inches, 

 with sometimes in addition a pointed projection upward, forming the 

 attachment, one to two inches in length. In other cases support is ob- 

 tained by simply weaving into the outer wall on one side the slender 

 plant stems or twigs to which it is fastened. 



" The eggs [one to three in number] are clear dull white, nearly un- 

 spotted, or with only a few widely scattered rusty specks near the 

 greater end. They measure about 18 X x 3-" 



349. Onychorhynchus mexicanus fraterculus Bangs. 



Muscivora mexicana (not of Sclater, 1857) Salvin and Godman, Ibis, 1879, 

 202 (Manaure; crit.). — Sclater, Cat. Birds Brit. Mus., XIV, 1888, 193 

 (Manaure and Sierra Nevada de Santa Marta). — Bangs, Proc. Biol. Soc. 

 Washington, XII, 1898, 137 ("Santa Marta ").— -Bangs, Auk, XVI,' 1899, 

 137, in text (Sierra Nevada de Santa Marta; range). — Allen, Bull. Am. 

 Mus. Nat. Hist., XIII, 1900, 145 (Bonda, Minca, and Cacagualito). 



Onychorhynchus mexicanus fraterculus Bangs, Proc. New England Zool. Club, 

 III, 1902, 86 ("Santa Marta"; orig. descr. ; type now in coll. Mus. Comp. 

 Zool.; meas. ; crit.). — Allen, Bull. Am. Mus. Nat. Hist., XXI, 1905, 278 

 (ref. orig. descr.; syn.). — von Berlepsch, Ornis, XIV, 1907, 482 (ref. 

 orig. descr.). — Ridgway, Bull. U. S. Nat. Mus.. No. 50, IV, 1907, 356 (Santa 

 Marta localities and references). 



Onychorhynchus fraterculus Brabourne and Chubb, Birds S. Am., I, 1912, 

 295 (ref. orig. descr.; range). 



Twenty-five specimens : Bonda, Cacagualito, Mamatoco, La Tigrera, 

 Minca, and Don Diego. 



This southern race of O. mexicanus differs in averaging slightly 

 smaller and in being a little paler below, but the differences are not 

 so constant or well marked as the describer would have us believe, 

 judging from the present series. The propriety of referring Costa 

 Rican birds to this form may well be questioned. There is one male 

 specimen (No. 38,771, Mamatoco, April 22) in which the crest is 

 nearer orange than scarlet. 



A Tropical Zone species, ranging from sea-level up to 3,000 feet, 



