304 AYES : PASSERES. — XLVI. 



514. SEIURUS Swainson. (crftw, 1 wair; ovpd, tail.) 

 o. Crown oraiific hrown witli a black stripe on each side. 



984. S. aurocapillus (L.). Ovkn-iukd. (Joldex-cuowxed 

 "Thkusu." Hri^lit olive green, white below, sharply spotted on 

 breast ami sides like a thrush. L. 6}. W. 3. 7.2^. U.S.; 

 abundant in woodland, spending most of its time on the ground, 

 like the other species of this genus, and the next; remarkable for 

 its ringing song and its curious oven-shaped nest ; the largest of the 

 true Warblers. (Lat., aurum, gold; capillus, hair.) 



aa. Crown plain brownish. 



985. S. noveboracen9i8(GnK'lin). Water Wagtail. Water 

 Thrush. Dark olive brown above, pale yellowish beneath ; thiekly 

 streaked everywhere with the color of the back ; superciliary line 

 buffy ; bill about half inch long ; feet dark. I.. 6. W. 3. T. 2\. 

 N. Am., in thickets ; moves its tail like a Wagtail. The Western 

 form, var. notabilis Grinnell is larger and darker ; it ranges E. to 

 Ind, (Lat., of New York.) 



986. S. motacilla (Vieillot). Large-billed Water TiiRrsii. 

 Color of preceding, but paler below, the streaks below broader and 

 less sharply defined ; superciliary stripe white ; bill larger, about |- 

 inch ; feet pale. L. 6^. W. ^. T. 2J. E. U. S., scarce ; N. to 

 JVlass. and N. AVis. (Lat., wagtail.) 



515. GEOTHLYPIS Cabanis. (-yea, earth; 6\vmi, some small 

 liird like a warbler.) 



a. Tail evidently shorter than wing, more than half hidden by the coverts. 

 {Oporvrnh Baird.) 



987. G. formosa (Wilson). Kexti'cky Warbler. Clear 

 olive green, l)right yellow below; crown and sides of head and neck 

 black, with a rich yellow sui)erciliary strij)e, which bends around 

 the eye behind; 9 ^^i'^'' ^1"^ black rejjlaced by dusky olive. L. 5|. 

 W. 3. T. 2}. E. U. S., chiefly S. W., N. to Wis. and Conn. ; in 

 low thickets; a handsome and active species. (Lat., comely.) 



988. G. agilis (Wilson). Coxxecticut Warbler. Olive 

 green, ashy on head ; throat and breast brownish ash. otherwise 

 yellow below; no sharp markings ; in fall almost uniform olivace- 

 ous. L. 5f . W. 3. T. 2}. E. X. Am. ; a shy. (piiet bird, rarely 

 seen in spring. 



989. G. Philadelphia (Wilson). MouRXiNO Warbler. 

 Bright olive, ch-ar yellow below ; head ashy ; throat and Ijreast 

 black, the feathers usually ashy-skirted (as though the bird wore 

 crape, hence " Mourning Warbler ") ; 9 '*^n<l $ "ot •" f"'^ P^"" 

 mage ashy anteriorly, almost exa<^tly like G. agilii, but the tail 

 more nearly length of wings; no white spot on eyelid. L. 5^. W. 

 2 J. T. 2 J. E. U. S., rather rare, in dense thickets. 



