( 28fi ) 

 'M. " Myrinotherula longipennis Pdz. 



Mjiimi'iliiiiihi IiDit/ijieiDii.i Pelzelii, /Ciir Oni. /Iras. ii. (18('j8) p. 15:i [Marabitanas, Rio Xcgro]. 



One young S, Jaiuiary ~'0, 1904. No. l'.»44. 



.\lthniigli not qnitn adnlf, it belongs witliont doubt to tlie present species, 

 having the U])jier parts of the same dark shity grey as a series from the CJanra, 

 River, which I compared with the types in the Vienna Museum. 



41). * Myrmotberula ciuereiventris Scl. i Salv. 



.)/. liiid-iirriiU-h Sclater iS; Salvin, /'. Z. S. 1SG7. p. T.')!! (pt. Cayenne, Surinam— type ex Cayenne : 

 cf. C«l. Hirils XV. p. L'44). 



No. 1913. cf ad., Igarapd-Assii, Para, .January 19, 19u4. Al. iuih ; cand. ^C) ; 

 rostr. 16 mm. 



No. 1911. (? fere ad. Igarap6-Assii, Para, .Tannary 18, 10(14. Al. 5.5; 

 cand. 28J ; rostr. 1.5 min. 



No. 2028. ? ad., Igarape-Assii, Para, Aiiril 2, 19(i4. Al. 5:?J ; cand. 27; 

 rostr. 1.5^ mm. 



The males hardly differ from a large series of skins from the (Orinoco and 

 Canra rivers, but the female is very mnch darker fulvons on the lower parts. 



41. Cercomacra tyrannina (Scl.). 



Pj/rigletia tymnniiia Sclater. P. '/.. 8. 18.55. p. flO. tab. '.tS (Bogota coll.) descr. $ <? . 



Ciri-iinmrm hjrttnn'ma Pelzeln, Ziir Orn. Brim. ii. (1868) p. K4 (Panl); Layard, fhis, 187.^, p. 387 

 (Pant). ' 



Two J ad., two immature S <S , and two ? ?. IT. i., 13, 14, 22. ii., 2. iv. 1904. 

 Nos. 1907, 1971, 1972, 1974, 1989, 203ii. 



These specimens are not different from topotypical Bogota skins except in 

 averaging somewhat smaller. 



42. * Cercomacra sclateri nom. nov. 



One ? ad., taken April 28, 1904. No. 21.54. "Iris brun."' AVing, 01 ; tail, 04 ; 

 bill, 17 ; graduation of tail, 22 mm. 



This s]iecimen agrees in structure and colour witli a female from (.'hyavotas, 

 N.E. Peru (Bartlett coll.), in the British Museum. In both there is a distinct 

 white 2)atch on the shoulders, the upper wing-coverts have very distinct white 

 apical margins, and the tail-feathers (except the middle pair) have large white 

 tips. Robert's specimen differs from the Peruvian one in having the upjier 

 wing-coverts more mi.xed with blackish, the ti])s to the tail-feathers rather shorter. 

 and the upper surface a little duller, less brownish. These differences, however, 

 may be individual. 



I take this opportunity to give a short review of the three first species of 

 Ci'icomac/a — viz. C. caendescens, ('. riiierasceits, and C. Hupcitsis of the Cut. Birds 

 XV. I regret to say that the characters and disfribntion of these birds, as given 

 in the work alluded to, are ijuite incorrect and insufficient. I examined the 

 material iu the Vienna, Tring, and Bcrlejisch Museums, and have likewise carefully 

 gone over the series in the British Museum which foruic(l the basis of Jlr. Sclater's 

 conclusions. Altogether 1 was able to study fnrty specimens. 



