208 NORTH AMERICAN BIRDS. 



Only a trace of white on wings, or none at all 

 Above indigo-blue. Wing, 2.10 ; tail, 1.70. Hab. Costa Rica and Gua- 

 temala var. inornata .' 



CompsotUypis guthimlis, Cab.vxis {Panda gvi., Baiep, Rev. Am. B.), and 



Conirostrum mpcreiliosum, H.vrtlal'B (Prirula 

 superciliosa, Baikd, Eev.), liave been referred 

 by later systematists to this genus ; but they 

 are much more closely related to Conirostrum, 

 — a genus usually assigned to the Cwrcbidw. 

 The " P." gutturaUs is confined to Costa Eica ; 

 but " P." superciliosa is a species of tlie 

 table-lands of Mexico, and likely to be de- 

 I'aruia americana. Bonap. tectcd iu Arizoua or Xcw Mcxico. The char- 



acters of this species are as follows : — 



Conirostrum supereiliosum, H.irtl. R. Z. 1844, 21.'). Whole dorsal region, including 

 rump, olive-green ; rest of upper parts ashy. Anterior half beneath yellow, with a cres- 

 centic bar of chestnut-brown across the jugulura ; posterior lower parts white, ashy later- 

 ally. A conspicuous superciliary stripe of white. Wing, 2.60 ; tail, 2.10. 



Pamla americana, Buxap. 



BLUE YELLOW-BACKED WAHBLEB. 



Parus americaniLS, Lin.v. Syst. Nat. Kith cJ. 1, 175S, li)o. Motacilla am. Gmelin. Sylvia 

 am. Lath., Aud. Sylvicola am. EiCH., Ato. — Jones, Nat. hi Bermuda, 1839, 59. 

 Panda am. BoN. List Birds N. Am. 1838. — GossE, Birds Jam. 1817, 151 (Jamaica). — 

 Baiud, Birds N. Am. 1858, 238 ; Kev. 169. — Sclater, P. Z. S. 1857, 202 (Xalapa). — 

 Ib. Ibis, 1859, 10 (Guatemala). — In. Catal. 1861, 26, 163. — Newton, Ibis, 1859, 143 

 (Santa Cruz ; winter). — Cassin, Pr. A. N. S. 1860, 376 (St. Thoma-s). — Gundlacii, 

 Cab. Jour. 1861, 326 (Cuba ; very common). CompsolMypis am. Cab. Mus. Hein. 

 1850, 20. — 1b. Joui'. Ill, 1855, 476 (Cuba). Fitxdula ludovicitma, BuissoN. J/wto- 

 cilla lud. Gm. Motacilla cqiies, BoDD. Sylvia torquala, ViElLL. Thryothoriui t<trq. 

 Stephens. Sylvia pusUla, Wils. Sylvicola pus. Swains. 



Figures : AuD. Om. Biog. I, pi. xv. — 1b. Birds Am. II, pi. xci. — Vieill. Ois. Am. II, 

 pi. xcix. — WiL.';. .4m. Orn. IV, pi. xxviii. — BuFFON, pi. enl. dccxxxi, fig. 1 ; dccix, 

 fig. 1. 



Sp. Char. Above blue, the middle of the back with a patch of yellowish-green. Be- 

 neath yellow anteriorly, white behind. A reddish-brown tinge across the breast. Lores 

 and space round the eye dusky ; a small white spot on either eyelid ; sides of head and 

 neck like the crown. Two conspicuous white bands on the wings. Outer two tail-feath- 

 ers with a conspicuous spot of white. Female similar, with less brown on the breast. 

 Length, 4.7-5 ; wing, 2.34; tail, 1.90. Nest of long moss. 



Hab. Eastern Province of United States, north to the Lakes (" Greenland "), west to 

 the Missouri Valley ; in winter, south to Guatemala (not .seen on the west coast of Mexico). 

 West Indies; Bahamas; Cuba; Jamaica; St. Croix; St. Thomas; Jalapa, Guiitemala 

 (Sclater) ; Orizaba, winter (Sumichrast) ; Yucatan (Lawrence) ; Porto Rico aud Inagiia 

 (Bryant). 



1 Panda inornata, Baird, Rev. Am. Birds, I, 1865, 171. 



?V ^a,- . 7i^c: 



