( 391 ) 

 32'^. Bucco hyperrhynchns Scl. 



Bucco h)jpei-i-liiiii<:hu.s Sclater, P/v/c Z„„l. Hw. Lmnl. xxlii. IH.'iS. p. 193. pi. cv. (Jan. 185G.—" Upper 

 Amazons") ; Hellmayr, Nov. Ziml. xiv. p. 399 (Humaytha). 



No. 785. ? ad., Allianoa, 13. xi. 1907.— Wing 110 ; tail 9i) ; bill 4nJ- mm. 



"Iris yellowish red, feet ami bill lilack." 



This bird, as well as tlie two from Ilnmaytlia obtained l)y Jlr. Ilnlt'manns on 

 liis first Madeira jonraey, lielong undoubtedly to the same form as a series from 

 Par:!. 15nt whether the so-called 7.'. tJijsom Scl. from Central and 'Western Sonth 

 America is really separable ai)pears to be very questionable, since there is much 

 individual variation as regards size of the bill and amount of white on the fore- 

 head. Yet I have never seen any specimen from Central America, Ecuador, etc., 

 that had so powerful a bill as is often found in collections from Para. 



On the other hand, B. macrorhtjnchos Gm. (e.K Cayenne, British Guiana, Kio 

 Branco and Manaos) is quite distinct specifically, and easily recognizable by the 

 lack of the white forehead, its shorter bill, and by having the feathers of the 1)lack 

 pectoral band narrowly margined with white. 



[329. Bucco tamatia tamatia Gm. 



Ducea Tamalin Graelin, Si/nt. Xut. 1. i, p. 405 (1788.— ex D'AubentoD, PI. enl. 741',. fig. 1 : Cayenne) ; 

 Pelzeln, Oni. Bras. i. p. 22 (Engenho do Gama, S. Vicente, Borba). 



Right bank : Borba ; Engenho do Gama and Sao Vicente, Rio Guapore 

 (Natterer). 



Thanks to the kindness of Dr. Lorenz, Natterer's series has been submitted to 

 my inspection. Besides four examples from the upper Rio Negro, there are two 

 adult females from Borba, an adult male and a youug female from S. Vicente, 

 and the Munich Museum possesses an adult male obtained at Engenho do Gama. 

 This series agrees, in the deep tawny colour of the throat, amount of black spotting 

 on the lower parts, size, etc., with numerous specimens I have from Cayenne, British 

 Guiana, Maipures (Orinoco), and Surinam, and unquestionably represents typical 

 B. t. tamatia.^ 



[330. Bucco tamatia pulmentum Scl. 



Bucro piilijieiiliun Sclater, Prnc. Znat. Sni; I.nniL xxiii. IS.';:'), p. 191. pi. cvi. (Jan. 18,',fi. — "Upper 



Amazons"). 

 B. t. puliiicnlnm Hellrnayr. Xnr. Zool. xiv. p. 409 (Humaytha). 



Left bank : Humaytha (Hoffmanns). 



The single adult female obtained by Mr. Hoffmanns during his first expedition 

 agrees perfectly with Sclater's type and other Upper Amazonian skins in the 

 British Museum. It differs from tamatia, of the right bank, by having the throat 

 very much paler, light butT (instead of deep ochraccous or tawny). The other 

 characters, viz. greater amount of rufous on forehead and coarser spotting of the 

 breast, claimed by Dr. Sclater, do not prove to be constant. 



This is another instance of the Madeira Valley dividing the ranges of two 

 nearly allied forms. 



A tliird race of the tamatia group inhabits the Pani, district, N.E. Brazil. It 

 has the throat fully as dark or even deeper tawny than ]>. t. tamatia, but may be 

 recognized by the much larger, more crowded, black spots on the breast and sides 

 of the belly, many of the feathers showing, besides the apical sjjot, a broad black 

 cross-band in the middle 



