( 77 ) 



sides of the breast and abdomeu, leaviug a much smaller part of the middle of 

 the abdomen white than in typical swai/isoiii. The tarsns is perhaps slightly 

 longer, bnt otherwise the dimensions are the same. The greater wing-coverts 

 and innermost secondaries are more or less boldly marked with ante-apical black 

 spots, which we have not seen in specimens from the coast regions ; bnt there 

 are a few Orinoco skins that lack these spots. The presence of these black spots 

 is perhaps a sign of immatnrity. Tarsns in typical swainsoni (Cumana) : 27|, 28, 

 28, 29, 29J mm.; in ffiiseipectus, 29, 29^, 30, 30J, 31, 31 mm. 



The female of M. s. griseipectm is not so easy to distinguish, bnt the crown 

 of the head seems always to be of a darker colour, more brown, not so rnfous, the 

 sides of the breast and abdomen are strongly washed with olivaceous brown, and 

 all the specimens we have seen have strongly spotted wing-coverts. 



Specimens collected iu British Guiana by the late H. Whitel}' belong also to 

 M. s. griseipecttm. 



Caicara : c?(? 3, 17. iii., 22, 23, 28. ii., 3 juv. 26. ii., ? ? 22. ii., IT. iii. '98. 



Perico : S 30. ix. '98. 



Munduapo : S juv. 8. ii., c? ad. 13. ii., ? 22. ii. '99. 



" Iris bright chestnut (chestnut) ; feet pinkish white ; bill black (maxilla 

 black, mandibula slate)." 



(Nos. 10203, 10204, 10216, 10283, 10284, 10359, 10507, 10508, 11241, 11864, 

 11939, 12054 Cherrie coll.) 



Suapure : i ad. 8. xii. '99 ; 22. x. 1900 (Klages). 



La Pricion : S ad. 8. ii., S juv. 8. ii. 1901 (Andr(5). 



260. Myrmeciza atrothorax (Bodd.). 



Formkarius atrothorax Bodd., Tabl. PI. Enl. (1783) p. 44 (ex PI. Enl. 701, fig. 2— Cayenne). 



Munduapo: SS ad. 15. ii., 1. iv. '99. Al. 60, 60^, caud. 54, culm. 17 J, tars. 

 25i mm. 



(Nos. 11961, 12369 Cherrie coll.) 



La Union : c? 21. xii. 1900 (E. Andre). Al. 61, caud. 56, culm. 16J, tars. 

 23J mm. 



La Pricion : <? 3. ii. 1901 (E. Audr^). 



Nicare : S 18. i. 1901 (E. Andre). 



" Iris light seal-brown ; feet mouse-grey ; bill black " (Cherrie). 



" Iris light brown ; beak black ; feet blackish " (Andre). 



These agree well with BogotA skins, but we have no typical Cayenne skins to 

 compare. 



261. Hypocnemis flavescens Scl. 



Hypomemisjkirescens Scl., P. Z. S. 1864 p. GOO (Rio Negro— typ. Marabitanas, in Mus. Brit.). 



Suapure, Caura R. : c?t? ad. 10, 11. iv. 1900, 10. xi. '99 ; " S (?) " (<? jnv.an ?) 

 11. iv., ? ? 11, 12. iv. 1900. " cJ Iris grey ; feet dark yellow ; bill, maxilla black, 

 mandible greyish white " (S. M. Klages). 



Nicare, Caura R. : 3 c?c? (sexed ? !), 2 ? ? (sexed <? !) 18, 19. i. 1901 (E. Andr^). 



La Pricion, Caura R. : tj ? 31. i. 1901. " Iris blackish ; upper mandible black, 

 lower light grey ; feet and toes brownish yellow " (E. Andrti). Easily distinguish- 

 able from //. caiitator by the sulphur-yellow underside. 



La Union, Caura R. : t? 17. xii. 1900. 



