194 Rulgway — Diagnoses of New Forms of Neotropical Birds. 



8. Drymophila grisea margaritensis subsp. now 



Type from Margarita Island, Venezuela; No. 151,709, coll. U. S. Na- 

 tional Museum; adult male; July 10, 1895; Lieut. Wirt Robinson, U. S. A. 



Similar in coloration to D. grisea tobagensis (Dahnas), but decidedly 

 smaller. Winy of adult male, 53-54.5mm. ; tail, 46-49; exposed culmen, 

 L4-14.5; tarsus, 20-21 ; middle toe, 11-11.5. 



0. Myrmeciza boucardi panamensis subsp. now 



Type from Panama (line of Panama Railway); No. 53,790, F. S. Na- 

 tional Museum; J. McLeannan. 



Nearest to M. boucardi swainsoni, hut adult male with gray outsides of 

 chest darker and more extensive, the tawny of Hanks and under tail-coverts 

 also deeper. 



10. Myrmelastes cassini sp. now 



Type from Turbo, northwestern Colombia; No. 21,739, coll. F. S. Na- 

 tional Museum; A. Schott. 



Similar to M. maculifer (Hellmayr),* but much paler, the adult male 

 having the back, rump, etc., light mars instead of deep vandyke brown, 

 the head (all round) dark slate color instead of slate-black, and the chest, 

 breast, and abdomen slate-gray instead of blackish slate. Wing, 69.5mm.; 

 tail, 42; tarsus, 29; middle toe, 17. 



Besides the type, there are in the National Museum collection an adult 

 female from Turbo and another (erroneously marked "d 1 " by the col- 

 lector) from Cascajal, Code, Panama. 



This form agrees with M. maculifer in its relatively very short tail (as 

 compared with M. exsul and M. exsiil occidentalism, and also in having 

 all the wing-coverts marked with a terminal white spot, and may he only 

 subspecifically distinct ; hut the coloration is so conspicuously different 

 that at present, or until actual intermediates are found, I prefer to desig- 

 nate it by a binomial. 



11. Gymnocichla nudiceps sancta=martae subsp. nov. 



Type from Santa Marta, Colombia; No. 28,11)3, U. S. National Museum. 



Similar to G. nudiceps nudiceps, but adult male with under wing-coverts 

 broadly margined with white, instead of being uniform black, and white 

 terminal margins to wing-coverts broader. Length (skin), 161mm. ; wing, 

 81; tail, 60; culmen, 21; tarsus, 30; middle toe, 10. 



12. Formicarius moniliger intermedius subsp. nov. 



Type from forest near Manatee Lagoon, British Honduras; No. 27,686, 

 coll. Carnegie Museum ; adult male; Feb. 28, L906; Morton F. Peck. 



Most like F. m. pallidus (Lawrence), from Yucatan, but general color 

 of upper parts darker and more rufescenl (raw-umber brown instead of 

 between broccoli brown and Isabella color), that of under parts clearer 

 gray (mouse gray instead of drab gray). 



* Mij r in i lash g exsul maculifer Hellmayr, Novit. Zool., xiii, no. •_', July, 1906, 340, 342 

 I Paramba, a. w. Ecuador; coll. Tring Mws.i. 



This form is evidently quite distinct specifically from Myrnu eiza exsul Sclater ( .'/. 

 immaculatu Sclater and Salvin = M. intermedia Cherrie!). 



