253 REVIEW OF AMERICAN BIRDS. [PAET I. 



attenuated towards the end than in any other Sylvicolidse, and re- 

 sembling somewhat species of Todirostrum. The excessive gradua- 

 tion of the outer quills is another marked feature, although the wing 

 is rather pointed. The peculiarities of the scutelte, if real and not 

 apparent, point towards the Tyrannidm; although, as far as I can 

 determine, there are but nine primaries. The type species belongs 

 to the Andean region of Ecuador and New Grenada, and is olive 

 green above and on sides, yellow beneath; loral spot, and patch 

 on top of head, black. (30,910. Quito. C. R. Buckalew.)' 



' In the Smithsonian collection is a female bird, collected in Paraguay, by 

 Capt. Page, which resembles somewhat the description by Bonaparte of Myo- 

 thli/pis luteo-viridis, from Bogota, in being entirely olive green above, the under 

 parts, with a line from bill over eye (becoming duller behind), yellow ; bill 

 horn color ; legs yellow. If the luteo-viridis, however, be the female of M. 

 nigricristatus, as suggested by Bonaparte and Sclater, this specimen cannot 

 belong to it, as it differs entirely in form. The bill resembles that of Euthlypis 

 lachrymosa, though not quite so long ; it is like that of M. mitratus, also, in 

 the straight culmen and gape, but is wider at base, and entirely lacks the 

 Todirostrum character of MyioMypis nigricrislatus. The wings are consider- 

 ably shorter than the tail, which is narrow, the feathers much pointed and 

 graduated, as in Myiothlypis, but longer (very much as in Geothlypis). The 

 wings are less rounded than in M. nigricrislatus, the 2d quill being a little 

 longer than the 6th, not about equal to the 9th. Length, 5.50 ; wing, 2.45 ; 

 difference between 1st and 4th quills, .40 ; tail, 2.90, its graduation, .35 ; 

 tarsus, .86 ; middle toe and claw, .65 ; bill from gape, .64. There is no indi- 

 cation of crest. (16,334. <j . Paraguay, June, 1859. Capt. Page, U. S. N., 

 No. 53.) 



The relationships of this species are certainly nearest to Myiothlypis, differ- 

 ing mainly in longer tail, less graduated wing, and differently shaped lateral 

 outline of bill. To include the two together, the characters of the genus 

 must be considerably modified ; somewhat as follows : " Bill much depressed, 

 very broad at base, but thickened ; the culmen and commissure straight to 

 near the tip ; bristles prominent. Wings shorter than the tail, graduated ; 

 the 1st quill not longer than the secondaries. Tail considerably graduated, 

 the feathers acutely pointed." 



Both this bird and M. nigricrislatus would be taken for Geothlypis, but for 

 the broad, depressed, bristled bill. The Paraguay bird may be called, pro- 

 visionally, M. fiaveolus if not luteo-viridis. 



