Ridgway — Diagnoses of New Forms of Neotropical Birds. 193 



impossible to tell whether this represents the Atlantic or the Pacific form, 

 it seems better to give the present form a new name. 

 (3) Thamnophilus doliatus yucatanensis Ridgway. 



3. Thamnophilus doliatus pacificus subsp. nov. 



Type from Chinandega, Nicaragua; No. 210,721, coll. U. S. National 

 Museum ; adult male ; F. Hicks. 



Similar to T. d. me.ricanus Allen, but adult male with under parts de- 

 cidedly paler, the black bars decidedly, sometimes very much, narrower 

 than the white interspaces, black streaks on throat very narrow. Length 

 (skin), 144mm.; wing, 67; tail, 58.5; culmen, 18.5; tarsus, 25; middle 

 toe, 15. 



4. Thamnophilus doliatus yucatanensis subsp. nov. 



Type from Temax, Yucatan ; No. 147,405, coll. U. S. National Museum; 

 adult male; 1883; G. F. Gaumer. 



Similar to T. d. pacificus, but adult male with black bars on under 

 parts usually narrower; adult female with upper parts (except pileum) 

 averaging more ochraceous (less rufescent), the wings (sometimes back 

 and tail also) showing more or less distinct indications of dusky bars. 

 Length (skin), 168mm. ; wing, 73; tail, 65; culmen, 10.5; tarsus, 27; mid- 

 dle toe, 16. 



5. Dysithamnus, mentalis septentrionalis subsp. nov. 



Type from Choctum, Vera Paz, Guatemala; No. 30,784, U. S. National 

 Museum; O. Salvin. 



Similar to D. mentalis semicinereus (Sclater), of Colombia, but decid- 

 edly smaller; adult male with upper parts paler, adult female with sides 

 and Hanks paler olive. Wing, 58.5mm.; tail, 38.5; culmen, 15; tarsus, 

 19; middle toe, 11.5. 



Range. — Panama to Guatemala (to western Ecuador also?). 



6. Dysithamnus mentalis oberi subsp. nov. 



Type from Tobago; No. 115,046, U. S. National Museum; adult male; 

 May; F. A. Ober. 



Similar to D. mentalis semicinereus but still larger, and coloration paler 

 and duller. Wing, 64.5mm.; tail, 44; exposed culmen, 15 ; tarsus, 20; 

 middle toe, 11.5mm. 



7. Thamnistes anabatinus saturatus subsp. nov. 



Type from Bonilla, Costa Rica (Atlantic side, 2,600 ft, alt, ) ; No. 199,066, 

 U. S. National Museum; April S, 1905; R. Ridgway. 



Differing from T. anabatinus anabatinus, of Guatemala and southern 

 Mexico, in much darker and less ochraceous coloration, the wings much 

 browner (less rufescent). Length (skin), 129mm.; wing, 67; tail, 48.5; 

 culmen, 19; tarsus, 20.5; middle toe, 12. 



