^°i89i" ] PKOCEEDINGS OF THE NATIONAL MUSEUM. 509 



light (bein^" a mounted spi'cimoii), the pliiiiiugc of tlie head, neck, and 

 body l)einj;- considerably diiilrr tlian in other specimens of «S'. crithacus, 

 thongh considerably more yellowish than in any of the seventeen ex- 

 ami)les of S. ehdpadcnsis, but the paler under tail coverts, sharper out- 

 line of the yellowish spot on inner web of the fourth primary, and other 

 characters, render the identilication certain. 



2. Sittasomiis cliapadenais Kidgvv. (Sp. nov.) 



1! i>ill(tiiottniii irithncitii Sci,. and Salv., 1'. Z. S. 1H79, 622 (Bolivia).— SCL. ami IIUDS., 

 Arg. Oni. I, 1S8H, l«)s (Salta, Arg. Rep).— liEUi.., J. f. O. 1&H7, 1:52 (Paraguay). 



;'? Sitianomiix nlivacetts Wmitk, 1'. Z. S.,1882, «>i:J (Salta, Arg. Rep.)— Pei.z., Oni. Bias., 

 1«71, ryj (Eugenlio do Gaiua and E. do Pari, liiazil). 



Sp. Ciiak. — !Mucli less yellowish olive than >S\ erithacus, with rufous- 

 chestnut of wings more extended (spreading over at least terminal half 

 of outer webs of primaries), and yellowish spot on inner web of fourth 

 j)rimary less sharply outlined. (Type, No. 33741, Am. Mus. Xat. Uist. 

 Chai)ado, Matto Gros.so, Brazil, .'\Iay IG, 1.885, H. 11. Smith.) 



3. Sittasomiis amazonus Lair. 



Sitlti8omu8 ama:oHU8 IjAFR., Rev. Zoiil. 1850, oSK*. — Pel/.., Orn. Bra.s. 1871, 59 (Borba, 



Baria and Theotonio, Brazil). 

 Sitlasoniusolivaciits Scr.., Cat. B. Brit. Mus., xv, 1890, 119 (part). 



Sp. Char. — Much grayer than S. cluqyailcusif!, the under parts being 

 dull olivaceous gray, without the sligiitest yellowish cast, the top of 

 liead and hind neck similar, but darker; outer webs of primaries much 

 le.ss rusty, even the outermost secondaries being olivaceous rather than 

 rusty; pale band across inner webs of remiges less yellowi.sh ; bill and 

 general dimensions larger. 



4. Sittasouius sylvioides Lafr. 



Sittasointis sylviuidcs Lafi;., Rev. Zool. 1850, .590 (Mexico). 



Siitatiomiis jyectinicaduH Cau. and Heine, Mns. Hein. ir, Aug. 2G, 1859,33 (Mexico). 



Siltaxomun oliraceiti* 8cr.., Cat. B. lirit. Mus., xv, 1890, 119 (part). 



This form closely resembles />'. amazonitu in the grayness of its colora- 

 tion, Init is distinguished by smaller size, uniform brown back, and 

 much deeper chestnut of wings, tail, and under tail-(;overts. Possibly 

 Colombian specimens may belong here. 



5. Sittasomiis asquatoiialis Ridgw. 



SittasomnH amazonus Beulkpscm and Taczax.. P. /. S. 188;^, 562 (Chimbo, W. Ecua- 

 dor). 



Sp. Cii.ar. — Toj) of head and hiiul neck grayish olive; back, scapu- 

 lars, and wlng-coverts raw umbei- brown, rather deeper on the scapulars; 

 rump, upper tail-coverts, and tail clear tawny, or orange tawny ; second- 

 aries similar, but rather •luller. lender i>arts uniform pale grayish 

 olive, excei)t under tail coverts, which are clear ochraceous. (Type, No. 

 00712, U, S. Nat. Mus., Guayaquil, Ecuador, Dr. A. Destruge. 



