(22 ) 



known by having the throat also ochraceous, ami by the under mandible being 

 black like the upper one. 



The birds collected by Natterer near Borba, on the lower Rio Madeira, 

 belong probably also to this form. 



40. Myrmotherula ornata hoffmannsi Hellm. 



il. o. hoffimumi Hellmayr, Bull. Brit. Orn. CI. xvi. (April 190G), p. 84. 



No. 512. c? ad., Itaituba, Santarem, 29. i. 06. " Iris brown, feet greyish 

 blue, bill black."— Wing 53; tail 39 ; bill 15 mm. 



No. 521. ? ad., Itaituba, 31. i. 00. "Iris brown, feet and bill black."— 

 Wing 51 ; tail 36; bill 14i mm. Type of subspecies. 



The c? ad. is very much like that of M. o. ornata of Bogota, but is of a 

 clearer, more bluish slate-grey on the head and mantle ; the chestnut-red patch 

 on the rump is less extended, the brownish wash on the flanks more restricted, 

 and the cheeks and malar region are of a darker cinereous colour. The upper 

 tail-coverts are olive grey in the new form, pale brown in M. o. ornata. 



The ?, however, differs very strikingly from the same sex of the typical 

 form. The throat, instead of being black with large white spots, is bright 

 ochraceous like the cheeks and malar region ; the apical spots on the upper 

 wing-coverts are buff instead of pure white. While the typical form has the 

 whole back (except the nape and pileum) and rump nuiform bright chestnut-rufous, 

 in the new form there is only a small irregular spot of this colour in the middle 

 of the back, the rump being mainly olive-brown. In other respects the ? of 

 M. o. hoffmannsi agrees well with Bogotd skins. The top of the head and the 

 mantle are olive-grey, the tail and the outer edges of the quills are also olive-grey, 

 and the colour of the abdomen exactly the same as in .1/. o. ornata. 



50. Myrmotherula axillaris axillaris (Vieill.) 



Cfr. Nov. Zool. xiii. p. 368. 



Myrmotherula axillaris melanogastra Chapman & Riker, Aide 1891, p. 28 (Santarem). 



No. 451. $ ad., Itaituba, 1(1 i. 00. "Iris brown." 



No. 474. ? ad., Itaituba, 21. i. 00. "Iris brown." 



Identical with examples from Par^, and Cayenne. Chapman (I.e.) says that the 

 specimens from Santarem are intermediate between " M. a. melanogastra " of Bahia 

 and U M. axillaris " of Bogota. Bogota, skins, however, belong to M. a. melaena (Scl.), 

 while those from the Lower Amazons represent typical .1/. axillaris. Near Bahia, 

 again, a different form is found, which has much less white on the flanks. This 

 is entitled to the name M. a. luctuosa Pelz. Cfr. my revision of Spix' types, 

 p. 665. 



51. * Conopophaga nielanogaster (Menetr.) 



Cvuiijuijihuna mrhmof/asi, r Mrin'trii-s, Mini. Acad. Sci. St. Petersb. (6) i. (1835) p. 537, pi. 15 fig. 2 



(= {J ad.) (Cuyaba, Mattogrosso). 

 C. >" byi Allen, Bull. A mer. Mus. ii. (1889) p. 90 descr. orig. (= ? ) (Reyes, N.E. Bolivia). 



No. 505. & ad., Itaituba, 20. i. 00. " Iris reddish brown, feet greyish bine, bill 

 black."— Wing 84; tail 44 ; tars. 33 ; bill 20 mm. 



No. 514. $ juv., Itaituba, 30. i. 00. " Iris brown, feet grey, bill black." 



The adult male agrees perfectly with Menetries' types, kindly lent by 



