118 RidgwayNeiv Forms of Oligomyodian Birds. 



More closely resembling P.p. coracina* in coloration, but the black de 

 cidedly less bluish and size much less: 



Scotothorus olivaceus sp. nov. 



Type, No. 75,520, Am. Mus. N. H., adult female, Rio Mato, Venezuela, 

 Jan. 25, 1901 ; S. M. Klages. 



Most nearly resembling S. rosenbergi (Hartert) of northern Ecuador, but 

 much lighter in color throughout (above clear olive, the wings and tail 

 sepia brown, beneath light olive, tinged with pale yellow, the throat tinged 

 with buff), and wifli wing, tail, and tarsus decidedly longer (wing 88, tail 

 62, tarsus 22 mm.). 



Venezuela. 



Scotothorus furvus sp. nov. 



Type, No. 62,070, U. S. Nat. Mus., adult male, Boquete de Chitra, Ver- 

 agua, Panama, 1869 ; E. Arce. 



Most like S. rosenbergi, but much darker and more uniform in color 

 (decidedly the darkest member of the genus), the upper parts dark olive- 

 brown or bister, under parts nearly uniform deep olive (more grayish on 

 under tail-coverts), bill much larger and tail much longer; also somewhat 

 resembling S. wallacii Sclater and Salvin, but very much darker through 

 out (especially on lower parts), bill much larger, and tail relatively longer 

 (wing 89.5, tail 66.5, exposed culmen 16 mm.). 



Pacific slope of western Panama. 



Attila tephrocephala sp. nov. 



Type, No. 64,624, U. S. Nat. Mus., adult female, Talamanca, Costa Rica ; 

 Jose C. Zeledon. (Collector's No. 442.) 



Somewhat like the grayer or more olivaceous examples of A. citreopyga 

 cilreopyga but pileum brownish slate-gray or mouse gray, lower throat, 

 chest and sides of breast uniform light mouse gray or olive-gray, throat 

 with fewer and less distinct dusky streaks, and larger wing-coverts much 

 less distinctly tipped with brown. 



Southeastern Costa Rica (Talamanca). 



Attila citropyga salvini subsp. nov. 



Type, No. 177,358, U. S. Nat. Mus., adult male, Pasa Nueva, Vera Cruz, 

 Mexico, March 23, 1901 ; A. E. Colburn. 



Similar to A. c. citreopyga, of Nicaragua, Costa Rica, and Panama, but de 

 cidedly browner above (the pileum and hindneck never olivaceous), rump 

 and upper tail-coverts ochraceous instead of light chrome, naples, or maize 

 yellow, tail more cinnamomeous or tawny, and size averaging decidedly 

 larger. 



Southeastern Mexico to Honduras. 



This is the form usually known by the name Attila citreopygia (Bona 

 parte) ; but the type of the latter came from Nicaragua, and therefore be- 



* Pipra coracina Sclater, Proc. Zool. Soc. Lond., 1856, 29 (Bogota, Colombia). P [ipra] 

 leucocilla coracina Berlepsch and Hartert, Novit. Zool., ix, April, 1902, 53, in text. Pipra 

 leucocilla coracina Hellmayr, Ibis, 1906, 26 (monogr.). 



