( G8 ) 



Mattogrosso : Engenho do Gama on the Rio Guaiiore (Natterer), Urncuin, 

 Conimbii on the Rio Paragnay (Borelli), C'hapaJa, south of f'nyaba (Smith). 

 S. Paulo : S. Jeronymo, Tiete (Garbe — c? ad. in Mns. H. v. Berlepsch), Rincao 

 (Lima coll. — cJ ? in Mus. H. v. Berlepsch), Jaboticabal (Lima coll. — <? ad. in 

 Tring), Itapura, at the junction of the Rio Tiet6 and R. Parana (Garbe coll. — 

 ? in Tring). Goyaz : city of Goyaz (Natterer, Bacr, Castcluau & Deville), Rio 

 Araguaj'a, Faz. Esperan^a (Baer). 



113. Thamnopliilus doliatus diflScilis Hellni. 



[Lmiius doliatus Linnaeus, Mus. Ad. Frid. ii. Prodr. p. 12 (1764. — loc. ign.)] 



Thumiinphilus niffriirisiatus difficilis Hellmayr, Verhamll. Zuul. But. Gescllsch. Wieii, 1903. p. 210 

 (Rio Claro, Goyaz). 



Nos. 2192, 2222, 2233, 2237, 2324, 2325, 2356, 2367, 2380. <SS ad., Rio 

 Aragnaya, June, July, and August, 1906. — Wing 74 — 80; lail 64 — 70; bill 

 19—20 mm. 



No. 2358. c? jnv., Rio Araguaya, Angnst 1906. 



Nos. 2181, 2238, 2244, 2303, 2355, 2360, ? ? ad. and imm., Rio Araguaya, 

 Jnne to August 1906.— Wing 73|— 78 ; tail 61—06; bill 18— 19 mm. 



This large series confirms the distinctness of T. d. difficilis, although the 

 colour-characters of the female as set forth in my description do not hold good. 

 The males differ from those of T. d. subradiatus Berl. by having the forehead 

 more densely striped with white, the ground colour of the uuder-parts purer white, 

 and the bill distinctly weaker and slenderer (not stouter as stated in the original 

 diagnosis lapsii calami). 



The crest feathers are as a rule uniform black ; but in one specimen (No. 2192) 

 they are white at the extreme base. Both webs of all rectrices are banded with 

 white. 



The females from Goyaz differ from those of T. d. subradiatus merely by their 

 slenderer l)ill. 



114. Thamnophilus torquatus Sws. 



Tluiimiopliiliiis torqualus Swainson, Zuul. Juuni. ii. p. 89 (182u. — Urupe, Bahia). 



No. 2139. c? ad., Rio Thesouras, May 1906.— Wing moulting ; tail 64; bill 

 15J mm. 



Agrees with several skins from Rahia. 



115. Myrmelastes luctuosus araguayae n. subsp. 



ILaniiis luctuoms Lichtenstein, Verz. Dull. Berliner Mus. p. 47 (1823. — PariS).] 



Nos. 2366, 2381, 2398, 2390, 2406. 66 ad., Rio Araguaya, August 1906.— 

 Wing 79—82 ; tail 70—73 ; bill 20—22 mm. 



Nos. 2230, 2372, 2377, 2379, 2397. ? ? ad., Rio Araguaya, June and August 

 1906.— Wing 77—81 ; tail 68—73; bill 19—21 mm. 



No. 2405. ((?) juv., Rio Araguaya, August 1906.— AVing 78 ; tail 70i ; bill 

 21 mm. 



Differs from -1/. I. luctuosus, oHhe Lower Amazons and Rio Madeira, in having 

 ranch shorter white tips to the tail-feathers, and broader white edges to the outer 

 webs of the scapular leathers. The former, too, are restricted to tiie three outer 



