VIREO PHILADELPHICUS VIEEO GILVUS. 97 



in England (near Derby, May, 1859 ; Mosley, N. H. Tutbury, 1863, 385, pi. 6; Zoologist, 

 1864, p. 89()5 ; Hahting, Br. Biitls, 1872, 99). ^ 



' Lieutenant Wurieii's Expedition. — 8695, Fremont, Platte River, 

 Kot obtained by Captain Eaynolds' Expedition. ^' '' ' 



There is a very great uniformity among the eggs of our Vireonidw ; with 

 specimens before me of olivaoeus, gilvus, beliii, noveboracentda, soUtarius, 

 and Jiavifrons, I can see no difference, except in size. They are all pure 

 white, very sparingly sprinkled, chiefly about the larger end, with fine 

 sharp dots of dark brown. Solitarms and flavifrons, on the whole, may 

 average a little the heaviest spotting : in one case of novehoraceiwis there 

 are no spots, but its fellow from the same nest is spotted. Likewise, a 

 whole set of V. beliii are immaculate, and in another set there is but a 

 mere speck here and there ov^- the surface. Eggs of beliii, the smallest, 

 measure 0.70 or less by about 0.50 ; those of noveboracensis are a trifle 

 larger ; a specimen of gilvus is 0.74 by 0.54 ; flavifrons, soUtarius, and 

 olivaceiis, are 0.80 to 0.85 by 0.55 to 0.60. Nidiflcatiou is essentially the 

 same throughout; a thin- walled, cup-shaped nest, of various fibrous 

 material, is suspended by the brim betwixt the forks of a twig. 



VIREO PHILADELPHICUS, Oass. 



Brotherly-love Virco. 



. Vireoaylvia pMladelphica, Cass., Pr. Phila. Acad, v, 1851, 153 ; vi, pi. 1, fig. 1. — Scl. & 



Salv., Ibis, 1859, 12 (Guatemala).— Bd., Rev. 1866, 340.— Lawk., Ann. Lvc. N. 



Y. ix, 1868, 96 (Costa Rica).— Salv., P. Z. S. 1870, 187 (Veragua).— B. B. & E., 



N. A. B. i, 1874, 367. 



Yireo philadelphious, Bd., B. N. A. 1858, 335, pi. 78, flg. 3 (Wisconsin and Ohio). — Wheat., 



Ohio Agric. Rep. 1860, No. 114.— Coc;es & PiiEKT., Smiths. Rep. 1861, 410.— ,'/, , ^ 

 Hamlin, Rep. Maine Board Agric. 1865 (Waterville, Me. ; only New England ' ' 

 record).— Codes, Pr. Ess. Inst, v, 1868, 277.— Allen, Mem. Bost. Soo. i, 1868, - 

 517 (Illinois).— TUKNB., B. E. Pa. 1869, 19 (very rare).— CoUES, Key, 1872, r . 

 120, fig. 62. if,-' , 



Fireosylvia cobanensis, Scl., P. Z. S. 1860, 463 ; Ann. Mag. N. H. 1861, 328. (Vera Paz.), , 



Sab. — Eastern North America. North to Hudson's Bay ; south to Central America. 

 No Mexican or West Indian quotations. , 



From the rarity of this species along the Atlantic coast, and its7 

 comparative frequency of occurrence in the interior, it would seem prob- "^ 

 able that it migrates chiefly through the Mississippi, and I confidently 



anticipate that it will be found breeding in the Missouri region. It is 

 more than likely that Mr. Trippe's queried citation (Minnesota, Pr. Ess. 

 Inst, vi, 1871, 117) really does belong here, and not to gilvus. Dr. Brewer 

 informs me by letter that one was shot near Calais, Maine, by Mr.. Board- 

 man, in the spring of 1872, and others found the latter part of May in 

 northwestern Maine, by Mr. Brewster — an occurrence not mentioned by 

 Mr. Maynard in his late excellent paper. Dr. Brewer adds that it is 

 "abundant" every spring, about May 24th, in Wisconsin. I found it 

 quite common along the feed Kiver of the North, about Pembina, in 

 June, and it doubtless breeds there. It frequented the heavy timber of 

 the river-bottom, in company with V. olivaceous and V. gilvus. 



^ VIKEO GILVUS, (Vieill.) Bp. d - ^- 



WarMing Vireo, 



a. gilvus. 



Muscieapa rjilra, ViBiLL., Ois. Am. Sept. i, 1807, 65, pi. 34. 



Vireo gikux, Bp., Obs. Wils. 1825, No. 123 ; Syn. 1828, 70 ; List, 1838, 26.— Nutt., Man. i, 

 1832, 309.— AuD., Orn. Biog. ii, 1834, 114 ; v, 1839, 433 ; Syn.. 1839,. 161 ; B. Am. 



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