256 LIFE HISTOEIES OF NORTH AMERICAN BIRDS. 



of the Boston Society of Natural History (Vol. II, p. 286). An egg taken by 

 him at the time is now hi the collection here, and undoubtedly belongs to this 

 species. 



Giraud's Flycatcher begins nesting in Costa Rica about the first of April, 

 and probably rears two broods in a season. The set of eggs presented by Mr. 

 Cherrie was taken on June 30, 1890, and was, more than likely from a second 

 laying. This gentleman describes a nest taken by him near Talamanca, Costa 

 Rica, on April 1, 1890, as follows: "It was placed in a thorny shrub, about 5 

 feet from the ground, the shrub growing in a clearing by the side of a river. It 

 is composed entirely of dry grass, externally of rather coarse stems, and lined 

 with "very fine, soft tops. It is somewhat retort shaped, resting in the forks of 

 the limb, but is also bound to one of the branches of the fork for almost the entire 

 length of the nest. Long grass stems hang from the front of the nest for 12 

 inches below the bottom; the nest measures externally 10 inches in depth by 

 6 inches in horizontal diameter." 



The one sent to the United States National Museum, taken at the same 

 place on April 8, 1890, is similarly constructed; it resembles the nests of our 

 Cactus Wren very much, and might readily be mistaken for one of them. 



The eggs are two or three in number, ovate in shape, rather thin shelled, 

 and without luster; their ground color is a delicate creamy white with a faint 

 pinkish tint, and they are sparingly marked, especially about the larger end of 

 the egg, with minute spots of prune and heliotrope-purple and lavender. 



The average measurement of five eggs in the United States National Museum 

 collection is 23.11 by 16.76 millimetres, or 0.91 by 0.66 inch. The largest egg 

 measures 25.91 by 16.76 millimetres, or 1.02 by 0.66 inches; the smallest, 21.34 

 by 16.51 millimetres, or 0.84 by 0.65 "inch. 



The type specimen, No. 25283 (PI. 1, Fig. 22), from a set of three eggs, 

 was taken by Mr. George K. Cherrie, near San Jose, Costa Rica, on June 30, 

 1890, and represents an average-marked egg. 



94. Myiodynastes luteiventris Sclatee. 



SULPHUR-BELLIED FLYCATCHER. 



Myiodynastes luteiventris Sclater, Proceedings Zoological Society, 1859, 42 (ex Bonaparte 

 Compte Rendu XXX VIII, .1854, 657, nomeu nudum). 



(B— , O— , R 310, C 365, U 451.) 



Geographical range: Mexico and Central America; north to southern Arizona; 

 south to Pauama. 



We are indebted to Mr. W. H. Henshaw for the addition of this handsome 

 Flycatcher to our avifauna. He says: 



"This peculiar Flycatcher appears to be a summer resident of the Chirica- 

 hua Mountains in southern Arizona, where I obtained a pair of old birds, together 

 with three young, August 24, 1874. These, though indistinguishable in size 



