( 384 ) 

 105. Myrniotherula cinereiventris Bel. & Salv. 



Afyrmotherula cinereiventris Sclater & Salvin, P.Z.S. 1867. p. 7. r ><> (Cayenne, Surinam, etc.— type 

 ex Cayenne, cf. Cat. Ii BrtT. Mits. xv. p. 244). 



No. 1414. rj ad., Borba, 28. xi. 06. " Iris brownish grey, feet plumbeous, bill 

 black."— Wing 51 ; tail 25 ; bill 14J mm. 



Agrees in the clear cinereous coloration with specimens from Cayenne anil 

 Para, but lacks the black snbapical baud on the rectrices. in the middle of the 

 lower throat there are a few minute, blackish spots to be seen, thus indicating 

 the close relation to M. menetriesii, to which I have called attention in my paper 

 on the birds sent by Mr. Hoffmanns from Tefle (supra, p. 69). 



106. Myrmotherula assimilis Pelz. 



Myrmotherula assimilis Pelzeln, Zm- Orntih. Bras. ii. p. 152 (1SGS. — Rio Amajati, a tributary of the 

 Rio Negro ; Poiares, Rio Negro ; Borba, R. Madeira) ; Hellmayr, Verliamll. zool. but. 

 Gesellsck. Wien, 1003, p. 212. 



Nos. 024, 017. S ad., c? imm., Humaytha, 13, 14. vii. 06. "Iris brown, feet 

 plumbeous, bill black."— Wing 53, 52 : tail 30^ ; bill 14 mm. 



Nos. 910, 034. ?? ad., Humaytha, 13, 16. vii. 06. "Iris brown, feet 

 plumbeous, bill black."— Wing 53 ; tail 30; bill 14 mm. 



As I have pointed out l.c, this species, though united to M. cinereiventris 

 by Mr. Sclater, is quite distinct, and differs at a glance by the presence in both 

 sexes of a large, concealed white dorsal patch. Besides this, the males may 

 immediately be recognised by the colour of the npper wing-coverts, which are dull 

 plumbeous with narrow white apical margins to the median and greater series. 

 In M. cinereiventris the lesser and median coverts are black tipped with white, 

 and the greater ones clear cinereous with a white tip, which is preceded on the 

 outer web by a distinct black snbapical spot. The females of M. assimilis may 

 also be distinguished from those of M. cinereiventris by their mnch purer grey 

 upper parts and by the median and greater upper wing-coverts being distinctly 

 edged with clear buff. 



I have examined specimens from the following localities : 



North Brazil : Rio Negro below Poiares (Natterer — cf ad. in Brit. Mus.) ; 

 Rio Amajau, tributary of the lower Rio Negro (Natterer — 2 <?<?, 2 ? ? in Vienna 

 Mus.) ; Santarem, Lower Amazons (Garbe — 1 ? ad. in Triug Museum); Borba, Rio 

 Madeira (Natterer— 1 ? ad. in Brit. Mus.) ; Humaytha (Hoflrnanus in Tring Mus.). 

 North Pern : Nauta (Hauxwell— 2 c? c? ad., 2 8 S juv., 1 ? ad. iu Mus. H. v. 

 Berlepsch). 



107. Myrmotherula haematonota (Scl.). 



Cf. supra, p. 70 ; Pelzeln, Zur Ornith. Bros. ii. 18l'>8. p. 81 (Borba). 



Nos. 1390, 1415. <?cT imm., Borba, 25, 28. xi. 00. " Iris yellow, feet grey, bill 

 black."— Wing 52, 51 J ; tail 44, 41i ; bill 14 mm. 



No. 1438. ? ad., Borba, 4. xii. 00. " Iris yellow, feet brownish grey, bill 

 black."— Wing 51; tail 42; bill 14£ mm. 



Nos. 942, 1040, 1082. cT juv., SS vix ad., Humaytha, 17. vii., 4, 14. viii. 00. 

 "Iris yellow, feet grey, bill' black."- Wing 51—52; tail 30, 37, 40; bill 134, 

 14 mm. 



