VIREONID^ — THE VIREOS. 373 



1. L. solitarius. Spurious piiintiry exposed. Throat and orbital ring wiiite. 



a. 8[>uriou.s primary well developed, — .(JO or more long, .10 broad. 



Nape and side of neek plumbeous; upper tail-coverts oliv- green. 

 Cris.sum tinged with yellow, but none on side of throat, nor aero!«3 

 breast. Wing, 3.0'); tail, 2.40; bill, from nostril, .27; tarsus, .0(5. llah. 

 Eastern Province of Tnited 8tat«'s, strayfiiflin}; westward to the Pacilic 

 Cojist, especially in its migration southward into Mexico, where it pene- 

 trates in winter ius liir as (iuatemala \iiv. solitariust. 



Above continuous ohve-browu ; below ochraoeous-white, with a bully 

 tinge across breast, and deeply olivaceous along sides. Crissum tinged 

 with yellow. Wing, 2.80 ; tail, 2.1.') ; bill, 30 ; tarsus, GO. //a6. Pacilic 

 Province of United States, straggling in autunni eastward into the 

 Middle Province ......... var. cassini. 



Above continuous ashy-plumbeous. Beneath pure white, ashy along 

 sides, and very slightly so across breast. Wing, 3.2'> ; tail, 2.')0 ; bill, 

 .30 ; tarsus, .GO. Hah. Middle Province of United ^States, south, in win- 

 ter, through Western Mexico t(.'oolima .... \SLr. plu inhe It s. 



b. Spurious primary very minute, — about .30 long by .04 wide. 



Nape and side of neck olive-green ; upper tail-coverts {)lumbeous. 

 Crissum not tinged with yellow, but sides of the throat ami across the 

 breast are. Wing, 3.10 ; tail. 2.20; bill, .20 ; tarsus, .04. Hab. Coban, 

 Vera Cruz, Guatemala ; residtMit? xar. propinq n n s ^ 



2. I*, flavifrons. Spurious primary concealed. Throat and orbital ring yellow. 



Anterior half of body olive-green above, lemon-yellow below ; pos- 

 terior half plumbeou.s-;ish above, white below. Wing, 3.00; tail, 1.00 ; 

 bill, .32 ; tarsus, .70. Ilab. Eastern Province of United States, south, 

 in winter, to Costa Rica, and very rare in Cuba, 



Lanivireo solitarius, Baird. 



BLTTE-HEAOED VISEO. 



Muscicapa soUtaria, WiLS. Am. Orn. il, 1810, 143, j>l. xvii, fig. 6. Virco solUnrins, Vieill. 

 — Aun. I. — C.\ssix, Sc. — ScL-VTER, P. Z. 8. IS.'.ti. •_>S»8 (Cordova) ; 18'>9, 3()3(Xalapa) ; 

 375 (Oaxacji ?). — ScLATER & Salvin, Ibis, 18(50, 31 (Guatemala). — Car. Jour. Ill, 

 4G8 (Culu). — GuxDLACH, Cab. Jour. 18t>l, 324 (Cuba ; very ran'). — iSAMUKLs, Birds 

 N. Eng. 277. Vireo {La >ii circa) sul. Baikd, liirds N. Am. 18ri8, 329. I'ircosjlcia. 

 {Lanicireo) solitariit, Baird, Kev. Am. B. 1804, 347. 



Sp. Char. (No. 300 ^.) Above olive-green, including upper tail-coverts; the top 

 and sides of head and nape ashy-plumbeous ; sides of the neck plumbeous-olive. Broad 

 line from nostrils to and around eye, involving the whole lower eyelid, white. A loral line 



* Vircoayh'ia propinqna, Baird, E'V. 18(5'), p. 348. This appears to be merely a permanent 

 resident race of solitarius, which itself visits Ouatenuda only in winter. Closely resembling the 

 latter, it ditfers essentially in the respects pointed out alnive. The (litlVreuce in coloration is 

 produciHl by a shifting, as it were, toward the head of the yellow and olive, leaving the upper 

 tail-coverts clear ash, and the lower pure white, antl encroaching mwn the ash anteriorly to the 

 crown and ear-coverts, and the white alongsitle of the throat. In the U. pliimbcns these tints 

 are simply almost entirely reniovi'd, leaving clear ash and pure whit*', with a tinge, however, of 

 olive on the rump and of yellow on the sides. In V. cassnni the tints are darkemnl and browned 

 by the in-culiar iidluence of the region where found, there being neither clear ash, nor olive-gieeu, 

 nor pure yellow or white, in the plumage. 



