26-4 RIRDS OF BRITISH GUIAXA. 



522. Scotothoriis olivaceus. 

 Ridgway's Manakin. 



Heteropel ma amazonum Salvin, Iljis, 1885, p. 301 (lioraima, Caraacusa, 

 Bartica Grove). 



Heteropelma icallacii (nee Scl. & Salv. 18G7) Sclater, Cat. B. Brit. 

 Mus. xiv. p. 319, pi. XX., 18SS (Bavtica Grove, Camacusa, Koraima). 



Scofofhorus olivaceus Ridgw. Proc. Biol. Soc. AVashiiigton, xix. p. 118, 

 190G (Rio Ma to, Venezeula) ; Bra bourne & Chubb, B. S. Amer. i. 

 p. 312, no. 3184, 1912. 



Scotothorus icallacii (nee Scl. & Salv.) Beebe, Our Search for a Wilder- 

 ness, p. 322, 1910 (Aremu River J. 



Adult. Head, sides of the face, hind-neck, back, lesser upper 

 wino-coverts, scapulars, and upper tail-coAerts dark olive-green ; 

 wings and tail golden brown with a tinoe of the same colour on 

 the crown of the head ; inner webs of flight-qnills dark brown, 

 paler on the inner edges ; under surface paler than above and 

 pervaded by a yellowish tinge — especially on the under wing- 

 coverts ; under surface of flight-quills and lower aspect of tail 

 pale brown. " Bill and feet born-colour'' (Cat. B. Brit. Mus.). 



Total length l.o-l mm., exposed culmen 14, wing 87, tail C4, 

 tarsus 21. 



The s{)ecimen described was collected on the Ituribisi liiver in 

 October 1 i)OcS. 



There appears to be no difference of plumage between the male 

 and female. 



Breeding-season. Unknown in British Guiana. 



JSest. Unrecorded in British Guiana. 



Eggs. Undescribed from British (hiiana. 



Range in British Guiana. Mount Koraima, Ituribisi Rivei-, 

 Supenaam River, Bartica, Kamakabra River, Makauria River, 

 Abary liiver, Arwye C^reek, Tiger Creek (McConnell collection) ; 

 Mount Roraima, Kamakusa, Bartica {Whitehf) ; Aremu River 

 {Beehe). 



Extralimital Range. Venezuehi. 



Hahits. Unrecordeil in Britisli Guiana. 



Genus NEOPELMA Scl. 

 Neopelma Sclater, P. Z. S. 1860, p. 467. Type N. avrifronn (Wied). 



This genus is easily distinguished by its orange-yellow crest. 



