()n Some Birds from Saiifa Jfarta, Colomhta. 107 



Rrmarls. — Tlie discovery of this wren in tlie higher Sierra Nevada car- 

 ries the range of the group of house wrens having conspicuously colored 

 superciliaries into South America proper. The species is very different 

 from either of the two before known. 



Microcerculus marginatus Sol. 

 One adult male from Chirua, Mar. 13, 1899. 



Hylocichla ustulata swainsoni (Cab.). 

 One female from Chirua, Feb. 16, 1899. 



Merula gigas cacozela Bangs. 



Eighteen s])ecimens, taken at San Miguel, Paramo de Chiruqua, and 

 Paramo de Macotama. All agree with the original pair from Macotama, 

 upon which I based the subspecies. 



Merula olivatra Lafr. 



Two males from La Concepcion ; altitude, 3,000 feet. 



I have compared these with the types of Merula olivatra which are in 

 the collection of the Boston Society of Natural History. There are two 

 specimens in fine condition and apparently only a little faded, tliough 

 they were for some years exposed to the light as mounted specimens. 

 In color they agree with the two skins taken by Mr. Brown, when due 

 allowance is made for the slight finding that has undoubtedly taken place. 

 They are, however, smaller in every proportion. The wing measurement 

 of the two Lafresnaye types is 115 and 118 mm. respectively, while in 

 the La Concepcion birds, both males, it is 122 and 124 mm. 



When we know more about the range and variations of this rare thrush 

 it may be found that there are two races. For the present I prefer to 

 leave the Colombian bird with true M. oUcatra. 



Merula albiventris fusa * subsp. nov. 



Fourteen specimens, both sexes, from Chirua, La Concepcion, San 

 Miguel, and San Francisco. Taken in Jan., Feb., and Mar., 1899. 



Ti/pe, from Chirua, Colombia; altitude, 7,000 feet. No. 0080, $ adult, 

 coll. of E. A. and 0. Bangs. Collected Feb. 11, 1899, by W. W. Brown, 

 Jr. 



finbspecific characters. — Much larger than true M. albiretitrls Spix, of 

 Brazil ; colors and pattern of coloration similar, except that the head is 

 grayer — shading from grayish olive on forehead and crown to olive gray 

 on cervix, where the gray meets the olive of the back much more aljruptly. 

 ' Bill dull green ; iris brown ; 'f sexes alike. 



* Fusus, large, plump, full. 



t Noted by Mr. Brown from fresh specimen. 



24— Biol. Soc. Wash., Vol. XIII, 1899 



