VIEEO. 189 



Central America and Colombia as far as the neighbourhood of Bogota. In Guiana, 

 the Amazons valley, the province of Bahia in Brazil, and Eastern Bolivia we find a 

 rather brighter-coloured bird, whose wing has the outer primary shorter than the fifth. 

 This appears to be V. agilis or V. chivi, as it seems probable that these names apply to 

 the same bird. On this latter point our materials are incomplete, as we have only one 

 skin from Buenos Ayres, and this hardly diff'ers from the more northern bird. On the 

 whole we are disposed to keep V. chivi (vel agilis) distinct from V. olivaceus, of which the 

 latter only immediately concerns us here. Prof. Baird, however, on the faith of a 

 single skin supplied him by Gould, traces V. agilis to Guatemala ^ ^^; but, in the absence 

 of any other testimony, we hesitate to follow him in this point. Accurate records of the 

 localities of his specimens of birds was never a matter of much consequence to Gould ; 

 and it may easily be that a mistake occurred in this case. 



Vireo olivaceus, as thus restricted, is a very common bird in the Eastern States of 

 North America, spreading westwards to the Kocky Mountains, and northward to the 

 shores of Hudson's Bay, outlying stragglers having reached Greenland, and even 

 England. In its southern migration, though it occurs in Texas, it has only once been 

 recorded from Mexico ^ ; and it is equally rare in Cuba i^. In Guatemala it, though 

 not common, has been more frequently met with, and as high as 5000 feet in the 

 Volcan de Fuego near Duenas. But it does not seek only a mountain retreat in 

 winter ; for the records of its occurrence in Honduras and Panama give places at or 

 near the sea-level where specimens have been obtained. In Costa Eica and Colombia 

 it again afiects the mountains. 



The pensile nest of V. olivaceus is well known in the States. It is placed between 

 twigs of a forest tree, and is composed of fine strips of bark, fibres of plants, webs of 

 spiders, &c. These are woven into a compact nest, which is always dependent from 

 the twigs to which it is attached. The eggs are clear white, marked (chiefly at the 

 larger end) with widely difi'used spots and dots of red-brown ^^. 



3. Vireo flavoviridis. 



Vireosylvia flavoviridis, Cassin, Pr. Ac. Phil. v. p. 153 ^ Scl. P. Z. S. 1856, p. 298'; 1859, 



p. 375 '; Scl. et Salv. Ibis, 1859, p. 12*; Baird, Rev. Am. B. i. p. 336 ^ Lawr. Ann. Lye. 



N. Y. vii. p. 323 ' ; ix. p. 96 ' ; BuU. U.S. Nat. Mus. no. 4, p. 17 ' ; Mem. Bost. Soc. N. H. 



ii. p. 272 " ; Salv. P. Z. S. 1867, p. 137 " ; 1870, p. 184 " ; Sumiclirast, Mem. Bost. Soc. 



N. H. i. p. 547"; v. Frantzius, J. f. Orn. 1869, p. 295''; Baird, Brew. & Ridgw. N.-Am. 



B. i. p. 366"; Tacz. P. Z. 8. 1874, p. 509"; Merrill, Pr. U.S. Nat. Mus. i. p. 125 "; BuU. 



Nutt. Orn. Club, iii. p. 152 ". 

 Vireo flavoviridis, Baird, U.S. Bound. Surv., Zool., Birds, p. 12"; Coues, B. Col. Vail. i. p. 490". 

 Phyllomanes flavoviridis. Cab. J. f. Orn. 1861, p. 93'°. 

 Vireosylvia agilis flavo-viridis, Ridgw. Bull. U.S. Nat. Mus. no. 21, p. 19''. 



V. olivaceo similis, sed hypochondriis et crisso multo leetius olivaceo-flavis distinguendus. (Descr. exempli ex 

 Panama. Mus. nostr.) 



