( 282 ) 

 32. Dendrocolaptes certhia iBortd.)- 



/■;.•!/.,■ rrrlhiii Boddaeit, Tail. PI. eiil. (17s3) p. :1S (Uiaed on Daubenton, /'/. tnl. C,-2l : " Le Picuiule. 



de Catfninr "). 

 Jhiiiliiiiohijilrg riii/eniieiixis Sclater & Salvin, P. Z. N. 18G7. p. blh (Pari! : specimeua examined). 



One ?, May 2, 1904. No. 21oS. Al. 122 ; caud. 121, l ; rostr. 36 mm. 



1 liave al.so before me another ? jiiv., cullecfed Ly Professor Steere near 

 JIargnary, August 23, 1879. 



Both tliese specimens belong to typical l>. rcrt/iin, of which I have a good 

 series from Cayenne, British Guiana, and the (Jriiidco region. They have the 

 lesser and meilian upper wing-coverts decidedly marked with blackish snbterminal 

 bars, the feathers of the pilenm show the characteristic jiale fulvous and l)lackish 

 cross-bars, and the lower parts are finely but distinctly undulated with lilackish, 

 only the lower tail-coverts being uniform ]iale olivaceous-brown. In all these 

 respects my Pani specimens, as well as those in the British Museum ( Wallace coll.) 

 agree perfectly with the typical bird from Cayenne. 



On the other hand, one specimen from Diamantina, near Santarem, for the 

 e.xamination of which I am much indebted to Mr. Kidgway, differs very markedly 

 from IK ccrtliia (thirty specimens examined) in the following details. The whole 

 pileum is nearly nniforin pale olivaceous-brown, without the fulvons subterminal 

 bars, and shows only traces of dark apical margins ; on the lower surface there 

 are but slight indications of dusky undulations on the fore-neck and middle of the 

 breast, the rest of the uuder-jiarts being uniform olivaceons-brown. In the coloration 

 of the lower parts tiiis bird approaches 1>. concolar Pelz., but differs from it ia its 

 black upper mandible, less rusty abdomen, dusky vermiculations on the fore-neck, 

 and in having blackish subterminal bars on the lesser and median wing-coverts like 

 ]).crrtliiii. The form from Santarem has been named Ji. obso/rf //■•>* by Mr. Ridgway, 

 but this name having been previously used by Lichtenstein,t it requires a new one, 

 and may be called 



Deudrocolaptes certhia ridg'wayi nom. nov. 



We have thus three distinct forms : 



1. 1>. /■eitliia «'/'^/«a (Bodd.), Cayenne, Surinam; British Guiana: Pard, 



Forte do Rio Branco and Barra do Rio Negro in North I'razili : 

 on the Orinoco and its tributary, the ('aura River. 



2. D. certhia riilgirai/i Hellm., Santarem. 



3. D. certhia concolor Pelz., Rio Madeira and Mattogrosso. 



33. Dendrornis spixii (Less.). 



Pi,i,l,i/,lr-^ xiili-ii Lesson, Tniilr il'Oni. (lx:ilj p. ;il4 [based ou l),mln„;,liijjl,-x Icniiin.shis (nee 



Licht.), Spix, Ai: lira^. i. (1K24) p. 88. tab. 'M. fig, 2—" Br^sil."— We substitute as the typical 



locaHty Parn~\. 

 Diiidrnnih xpixii Pelzoln, Zur Oniilti. Bnisil. i. (18il7) p. 4.5 [Ami.— Specimens in Mus. Vindob., 



examined]. 

 Ji. iiri-lltilit (nee Spix !) Sclater & Salvin, P. Z. »S. 18G7. p. '.ilb [Pani. — Specimen examined]. 

 1). fralen-iiliix Ridgway, Prnr. C. S. Xul. Mim. x. 1887 (1888) p. f)'2(j [Diamantina, near Santarem. 



Lower Amazon], 



One adult ?, Ajiril 13, 1004. AI. 98i ; caud. S4 ; rostr. 20 mm. 



• J'lvc. IJ. S. Aiit. Miis. X. 18S7 (1S88) p. .">L'7 (Dianiaiitiiia, Santarem). 

 t Ahhandl. Miail. Ikrlin 1818-19 (publ. 1820), p. -JOIi. 

 I Speciiiien.s in Mus. Vinclob. examined, 



