74 Rldgway — Formicariidx, Furnariiclas and Dendrocolaptidie. 



Campylorhamphus chapmani sp. nov. 



Type from unknown locality in South America. No. 43,296 Am. Mus. 

 Nat. Hi.«t. 



Somewhat like C. pusiUns (Sclater) but streaks on inider parts, as well 

 as those on pileum and liindneck, broader; color of ))ack lii^hter and 

 more olivaceous; chestnut of wings and tail decidedly lighter, and Itill 

 smaller and more .slender. Wing, 103 mm.; tail, 93; culnien (chord), 

 54; tarsus, 21; middle toe, 18. 



Myrmeciza* zeledoni sp. nov. 



Ti/pe from (iuayabo, Costa Eica. No. 209,558 U. S. Nat. INIus. Adult 

 male. March 7, 1908. Museum-Zeledon Expedition. 



Similar to ^f. hnmaculatus (Lafresnaye), of central Colombia, Ijut wing 

 and tail nuicli shorter, forehead much more scantily feathered, bill much 

 larger, general color of adult male much deeper black, and white margin 

 towing much broader; adult female less rufescent above, tail more black- 

 ish, chin, malar, suborbital, and auricular regions blackish, and chest 

 and foreneck brown instead of grayish. Adult male (type): Wing, 70 

 nun. ; tail, 74; culmen, 24.5; tarsus, 34; middle toe, 23. t 



Myrmeciza berlepschi sp. nov. 



Type from Chimbo, western Ecuador. No. 97,774 U. S. Nat. Mus. 

 Adult male. November, 1882. J. Siemiradzki. 



Similar to M. zeledoni, from Costa Rica, but the adult male with much 

 more white on anterior portion of wing, nearly the whole of the lesser 

 covert area being white instead of the anterior margin only. Adult male 

 (type) : Wing, 83 mm.; tail, 76; culmen, 24 ; tarsus, 36.5 ; middle toe, 22. 



This species apparently occurs also in Central Colombia, since Messrs. 

 Von Berlepsch and Taczanowski compared specimens from Chimbo with 

 others from Bogota and pronounced them identical ( Proc. Zool. Soc. Loud., 

 1883, p. 565). Thamnophilus immaculatus Lafresnaye, of which I have 

 examined three adult males and one adult female from the Lafresnaye 

 coll(H'tion in the Boston Society of Natural History, is, however, a very 

 diti'erent bird, and consequently authors have erred in identifying the 

 species from western Ecuador and Costa Rica with T. immaculatus. 



* I am unable to find characters justifying the recognition of a genus Myrmelast.es, 

 as distinguished from Myrmeciza, and therefore place the present bird and its near 

 allies, M. berlepschi iiud M. immaculata (Lafresnaye), in the latter. Myrmelastes Inw- 

 rencii Salvin and (ifxlman is the immature male (in second year?) of Gymnocichla 

 chiroleiirn and M. cori'iiiui< Lawrence (^ M. ccterun Hangs) is the same of G. nudiceps. 



+ Measurements of the type of M. immactthitiis are as folloAVs: Wing, S2; tail, SI; 

 culmen, 20; tarsus, ;i:i; middle toe, 21. 



