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T\]iical 'J'. cr/staUifi, IVom (-'ayeiine, is very dift'creiit, liaviug but a very s]nall 

 dark ocLraceous gular spot aud the crest reddish orange, bordered anteriorly and 

 laterally with creaiuy-buff. 



I have before lue forty-seven adult SS, and it may not lie out of jjlare to say 

 a few words about the subspecies of 7". cristntus. 1 can distinguish the i'uUowiiig 

 forms : — 



1. 'rai-liifjihoiius cristatiis cristatui (Giu.). 

 Typifal locality : Cayenne. 



Crest small, reddish orange, broadly bordered in front and laterally with 

 creamy-buff. Gnlar spot very small, dark ochraceous. 



2. T. cii.studis criiifafi'llHS Scl. 

 Typical locality : Bogota. 



Crest small and bordered with creamy-buff as in No. 1, but bright orange-red. 

 Galar spot variable. 



Hab.: " Bogota "—coll. : N.E. Peru (Loretoyacu, Pebas, etc.), N.W. Brazil; 

 Marabitanas, Barcellos, Borba, Engenho do Gama in Mattogrosso ; Venezuela : 

 Caura River, a tributary of the Orinoco. 



3. T. cristatiis intercedens Berlejjsch. 



The type is of the so-called " Orinoco " make. 



Crest pure oninge-i/elloir, without any reddish adiiii.xture, but as in Nos. 1 and 2 

 bordered with creamy-buff. 



llab. Orinoco Delta and the adjoining parts of British Guiana. 



4. 2\ ciistatus hrummis (Spi.^). 

 Typical locality : Rio de Janeiro. 



Crest much longer and fuller than in Nos. 1, 2, 3, and of a beautiful tiery-red. 

 There is only a faint indication of a fulvous margin on the anterior border, (iular 

 spot very large, pale ochraceous. 



Hah. Eastern Brazil, from S. Paulo to Para. 



lo. Tachyphonus surinamus TLiun.) 



Tunhis Kuniiamtfs Linnaeu.s, Si/^t. X<if. x'u. 1. (IVifi) p. '_".'7 (ex Brisson : Surinam). 

 Tachyphonus suriuamtis .Sclater t^ Salviii, P. Z. N. 1H07. p. .'»71 (Para, MarcU ami May). 



One male, in moult, taken April 27 ; two ? i taken 11). i., 27. iv. 19u4. Nos. 

 2148, 2153, 1916. "Iris brun." 



An adult i, collected by Prof Steere near Bemfica, has a large, bright 

 ochraceous patch, mixed with ferruginous, on each side of the chest, agreeing in 

 that respect with three SS from Borba (Natterer coll.). In one specimen from 

 Cayenne — unforluuately not quite adult — there is only a small white spot with a 

 slight buft'y admi-\ture. Topotypical .Surinam birds are not av;iilabie for comparison. 

 More material is reiinired tu settle the ijuestion whether the Para form is separable. 



10. Arremon silens (Bodd.). 



TixiMcjra silem Boddart, Tubl. PI. enl. (17813) p. 41} (baaed on Daubenton, /'/. ml. 74l' : Cajeune). 

 An-emoii silens Sclater \- Salvin, /'. Z. S. 1807. p. 572 (Capim River) ; Layard, Ihk, 187:!. p. ;j80 

 (Para). 



One male and one female, January 31 and April 27. Nos. 1953, 2153. 

 These specimens agree very well with examples from British Guiana and tiic 

 Orinoco region, the male differing only in its much narrower jugular baud. 



1!) 



