510 NOTES ON THE GENUS SITTASOMUS RIDGWAY. 



The peculiarly light tawuy -rufous, almost orange-rufous, hue of the 

 tail, rump, secondaries, etc., strikingly different from the deep chestnut 

 or chesnut-rufous color of the same parts in other forms, is the most 

 obvious character of this well-marked species or race. 



6. Sittasomus griseus Jard. 



Sittasomus griseus Jard., Ann. and Mag. N. H., xix, 1847, 82 (Tobago). 

 Sittasomus olivaceus ScL., Cat. B. Brit. Mus., xv, 1890, 119 (part). 



With the exception of 8. stictolcemus this is the most distinct species 

 of the genus, differing conspicuously from all the other forms in the 

 light olivaceous back and scapulars (concolor with the head and abruptly 

 defined against the tawny-rufous of the rump), and in the very much 

 restricted pale (white instead of buffy yellowish) band across the inner 

 webs of the remiges, this band furthermore becoming nearly obsolete on 

 the secondaries, which likewise are without the distinct blackish sub- 

 sterminal space. Its characters were accurately and minutely given by 

 Jardiue in the description above cited. 



7. Sittasomus stictolaemus Pelz. j 



Sittasomus stictolmcvus Pelz., Orn. Bras., 1871, 59 (Borba, up. Amazon). — SCL., Cat. B. * 

 Brit. .Mus., XV, 1890, 120. 



This species, which 1 have not seen, differs from all the others in its 

 spotted throat. Possibly it is not strictly congeneric with them. 



