( 358 ) 



skins from British Guiaua, Uiianoco (Orinoco delta) and the L'aura Itiver iu having, 

 on the sides of the chest, a small white patch slightly washed witli bufi'y towards 

 the inner edge. 



In three 6S ;id. i'roni Para tiiis ])afcli is inucli larger, dccj) ochreous yellow 

 and mixed with ferruginous interiorly. Three c?cj, collected by Natterer near 

 Borba on the Rio Madeira, are perfectly alike. I propose, therefore, to separate 

 these birds as a different form. 



Type in Tring Museum : d ad., Bemfica, Pan'i. Cnllccted by Professor Steerc. 

 AVing 87 ; tail TO.} ; bill 18 mm. 



Five (?c? ad, from Barra do Rio Negro (Manaos), collected by Natterer, how- 

 ever, represent typical 7'. .«. sKiinamtm^ agreeing iu all resjiects with specimens 

 from Surinam, etc. 



Two SS ad. from Marabitanas, and another from the Rio Iranna, Ujjper Kio 

 "Negro, are again diflercnt, and belong to T. s. napensis. I can tind no diflerenccs 

 between them and a series from the Rio Napo, N.E. Peru and Bogota collections. 

 This form differs from T. s. siirinamns in the i}atch on the sides of the chest being 

 much smaller and pure white like the axillaries, and iu having the uropygium of a 

 darker ochreous colour. 



The range of these tliree forms is thus as follows : 



fi. T. s. surinamus (Linn.), t'ayenne, Surinam, British Guiana, Orinoco dellii 

 (Gnanorii; Andre coll. — Mus. Tring), westwards to the Canra River, E. Venezuela, 

 south wards to Manaos on the northern ))ank of the Amazons (Natterer). \_S 6 ad. 

 examined : 4 from Surinam ; British Guiana ; Vi, (!aura River ; 1 Orinoco delta ; 

 5 Barra do Rio Negro.] 



b. T. s. napensis Lawr. From Eastern Colombia (Bogota coll.) south through 

 Eastern Ecuador (Napo) to N.E. Peru, east to Marabitanas, etc., on the Upper Rio 

 Negro. [(?c? examined: 3 Rio Napo; 3 Upper Kio Negro; 1 Chjavetas, N.M. 

 Peru ; fi Bogota coll.] 



c. T. s. insignis llellm. Lower Amazons, from Para westwards to Borba on 

 the lower course of the R. Madeira. [c?cj ad. examined : 3 Pard ; 3 Borba.] 



A\hile the females of T. s. surinajnus and T. s. insignis are not distinguishable, 

 that of T. s. napensis can easily be recognised by the much deeper colour of the 

 throat and breast, which are ochraceous buff (Ridgw. JS'amenr/. v. 7), instead of 

 being cream-buff (v. 11). 



I compared twenty females of the eastern forms with nine of V. .s. naj/rnsis 

 (3 Marabitanas ; 4 Bogota; 2 (ihyavetas, N.E. Peru). 



15. Arremon silens (Bodd.) 



Cf. Nor. Zool. xii. 1005. p. 275. 



4 6 6 ad. and 1 ? IVmn Prafa, 31. x., 3, 4, 10, 14, 31. xi. In.-.. Nos. 0, 48, W,, 

 74, 11)1. " Iris brown." 



Like the s|)ocinien sent by I\I. Robert, tlie males liavc^ tlie black jugular band 

 rathrr luirrow, but one is hardly distinguishable in this respect from Guiana 

 examples. 



10. Saltator magmis (Gm.) 

 Xoi-. Xnol. xii. (1905) p. 27fi. 



•Z 66 ad., 7, 12. xii. 0.5. Nos. 288, 321. " Iris brown," 



