588.] PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 539 



itli either the type of C.castaneus or a specimen of the same form 

 ■orn Guatemala.* The distinctly larger bill of C capistratus is well 

 hown by these two specimens, which measure as follows: 



Collection. 



Costa Rica NV. Mus. 

 do 



Sex 

 and 

 age. 



cfad 

 ?ad 



Lenstli 



(skin). 



Wins 



C. 90 3.15 

 C. 40 2. 95 



Tail. 



Cul- 

 men. 



2. 85 1. 02 

 2.50 1.08 



Ex- 

 posed 



cnl- 



men. 



.85 

 .90 



Tar- 



8118. 



1.00 

 .95 



Trojas, February, 1880. 

 San Mateo, January 



(- tficrocerculus orpheus, sp. nov. 



Sp. Char.— Somewhat like M. philomela (Salv.), but larger, with 

 nucli longer bill, grayer under parts, and chiefly unbarred upper 



surface. 



Adult (type, No. 115037, U. S. Nat. Mus., Pacuare, Costa Rica, 1876; 

 Juan Cooper).— Above plain burnt-umber brown, duller anteriorly, 

 larker on rump and upper tail-coverts, some of the more posterior 

 scapulars showing very indistinct dusky terminal bars, and upper tail- 

 uoverts very indistinctly barred with dusky; wings dusky blackish, the 

 coverts and tertials broadly bordered with umber brown; tail dusky 

 black. Sides of head light grayish brown, fading into dull brownish 

 white on chin and throat. Chest dull brownish gray, many of the 

 feathers with a darker central spot; breast and middle line of belly 

 with these central dark spots considerably larger and darker, triangu- 

 lar or sagittate in form, the broad terminal margins of the feathers 

 paler brownish gray than the general color, producing a decidedly 

 varied effect; sides, flanks, and under tail-coverts uniform deep van- 

 dyke brown. Bill black, the basal half of gonys and lower half of 

 mandibular rami whitish ; legs and feet brownish black. Length (skin), 

 4.30; wing, 2.30; tail, .95; exposed culmeu, .70 ; gonys, .48; tarsus, .98; 



middle toe, .65. 1 , 



This bird is clearly distinct from both M. philomela (Salv.) and M. 

 Imcmia SALV., with both of which I have carefully compared it ami 

 it is still less like M. daulias, recently described by me in these Pro- 

 ceedings, Vol. X, p. 508, also from Costa Rica, but inhabiting the oppo- 

 site side (Atlantic coast). No other species of the genus, apparently, are 

 sufficiently related to require comparison. 



. Geothlypis caninucha icterotis, subsp. nov. 



Subsp. CHAR.-Similar to true G. caninucha, but auriculars olive- 

 yellow or yellowish olive, instead of dull gray. 

 Hab. — Costa Rica. , ,- 



Adult male (No. 94415, Costa Rica; Dr. Van Patten .-Forehead ; u 

 about .12 of an inch above exposed base of culmen), lores and orbits, 

 deep black, this ending very abruptly beneath posterior port ion ol ej i s, 

 I * lathe Ibis for April, 188 9~(pT^, Messrs. Sal vuT^^dman maintain that this 

 character is inconstant. 



