412 XOVITATES ZOOLOGICAE XXIV, lfll7. 



not so deep black, the terminal bar to the rcctrices, especially on the lateral 

 feathers, is less wide and, as a rule, somewhat less blackish. Wing: <J 112-115, 

 $ 104-1085 mm. The young is paler than the adult. 



Type of H. h. pallidior : 3 ad. Salta, Cachi, 2,500 m. 5. iv. 1905. Jose 

 Steinbach coll., No. 49. "Iris yellowish brown, feet and bill black." 



5. Tyrannus melancholicus occidentalis subsp. nov. 



Lilvc T. m. satrapa, but underside paler yellow, upper tail-coverts appar- 

 ently lighter also smaller. 



Wing: S 111, lllS, ? 106, 106 mm. 



Hab. San Bias, Tepic, N.W. Mexico. 



Type : 3 ad. San Bias, 20. iv. 1897. 



Our specimens, two males and two females, were all shot from April 20th 

 to 23rd, and are in rather worn plumage. Therefore the paler colour of the upper 

 tail-coverts is open to doubt, but the shorter wings and paler yellow underside 

 are undeniable Probably specimens from Sinaloa belong to the same form, 

 as Ridgway (B. N. and Middle America, iv. p. 701) gives for males from 

 there the length of wings as 11 2' 9, while in the other specimens of his large 

 series they vary from 11 3 to llS"5and 120, and are nearly all over 114 mm. None 

 of Ridgway's females range below 1095 (one only !) and they mostly go from 

 110 mm. upwards. The^ from Jahsco with a wing of 1129 mm. must of course 

 belong to our new form, as that place is not far from San Bias. 



6. Myiozetetes cayanensis hellmayri subsp. nov. 



Differs from M. r. cayanensis from Cayenne and North Brazil (24 speci- 

 mens from Cayenne, Surinam, Para, and Goyaz in the Tring Museum) in having, 

 as a rule, more rufous on the outer webs of the primaries and the upperside 

 not so dark and more olivaceous. 



Hab. West Ecuador, Cauea Valley in Colombia, and in Bogota collections. 



Type : c? ad. Cachabe. N.W. Ecuador, 10. xi. 189G. W. F. H. Rosenberg, 

 coll. (Tring Museum.) 



Examined : 6 Cachabi, W. F. Rosenberg coll. ; 2 San Domingo, W. Ecuador, 

 W. Goodfellow coll. ; 2 Nanegal. W. Ecuador, W. Goodfellow coll. ; 1 Guayaquil, 

 Dr. Powell coll. ; 1 Cauea Valley, T. W. Paine coll. ; 8 Bogota skins. 



In Birds of North and Middle America, iv. p. 444, Mr. Ridgway united M. c. 

 ruflpennis with M. c. cayanensis which he accepted as ranging from " Panama 

 through Colombia, Venezuela, Trinidad, British Guiana, Surinam, Cayenne, to 

 Ecuador, Eastern Peru, and the entire Amazon Valley, Bolivia, and South-western 

 Brazil." To this distribution we cannot agree. We separate, as explained, the 

 birds from Colombia and Ecuador (at least the western parts !), and there is no 

 doubt at all that 31. cayanensis rufiqie.nnis from Venezuela is quite distinct. 

 On Trinidad it has never been found, and the specimen in the Strickland collec- 

 tion, said to come from Trinidad, is almost certainly wrongly labelled, like so 

 many other skins, which Mere collected in Venezuela and shipped from Trinidad. 

 Mr. Hellmayr, after whom we are naming our new subspecies, has given a review 

 of the subspecies of M. cayanensis in his Revision of the Spix types (Ahh. Bayer. 

 Akad. Wiss., 11. Kl., XXII. Bd., III. Abt., 1906, p. 649). He already mentioned 

 differences of the birds from Western Ecuador, but he considered Bogota speci- 



