370 Hans Graf von Berlepsch : 



neciioii remigibus griseo-albo (nee olivaceo-griseo) extus 

 marginatis, rostro quoque graciliore. 



Observât lo. Mares juniores quoad picturam corporis infe- 

 rioris inaribus Th. dinellii Beri, smallimi sed pectore obsolete 

 transfasciato vel maculato, necnon pictura rectricum externa- 

 rum etc., différant. 



S <S al. 73-68^ caud. 71-65*, culm. 16Ì-15, tars. 24Ä-22* 

 mm. 



Habitat : Bolivia < mentalis (Samaipata, Holguin). 



Typus: in Mus. H. v. B. {<$) ad. Samaipata, 24th July 

 1890. [G. Garlepp leg. No. 761.] 



The species described above is of considerable interest, as 

 by its coloration it forms a link between the group with a 

 plain undersurf ace, including Th. caerulescens, Th. gilvigaster, 

 Th. dinellii, etc., and the Th. aspersi vent ris Lafr. et D'Orb. 

 group with heavily banded underparts. 



In fact, the adult male of Th. conneetens has the region of 

 the lower neck and upper breast irregularly banded with 

 black, while it otherwise resembles Th. dinellii from 

 Tucuman, differing from it in the breast and upper belly 

 being greyish-white instead of fulvous, and in the lower belly 

 and under tail-coverts being but slightly suffused with fulvous. 

 It further differs by the black cap descending to the nape and 

 involving the forehead ; by the back being mostly black, only 

 slightly mixed with greyish (the bases being snowy- white to a 

 large extent) ; by the upper tail-coverts being mostly black 

 with greyish bases and much larger white apical spots ; by the 

 wing-feathers being bordered with greyish-white externally ; 

 by the white spots on the outer webs of the outer rectrices 

 being of much larger extent ; and the white apical spots also 

 larger, and lastly by the bill being rather narrower. 



Young males come very close in coloration to the adult 

 male of Th. dinellii, especially in the coloration of the under- 

 parts ; but they show more or less indications of blackish 

 bands and spots on the lower neck and upper breast. No. 

 756 from Samaipata (coll. Grarlej>p) in the coloration of the 

 lower neck and breast is truly intermediate between the old 

 male described above and the young males from the same 

 locality. 



