10 Mr. P. L. Sclater on the Genus Spermophila. 



caudse 2"2. Fem. fusca, alis ct cauda nigricantibus : subtus 

 pallide ochraceo-albicans. 



Hab. Brit. Guiana {Schoinb.) ; Wood region of S. E. Brazil 

 {Max.) ; Rio Parana and Cuyaba {Natt.) ; Paraguay [Az.) ; 

 Bolivia, Moxos and Guarayos {jyOrb.). 



I have only been able to recognize one species under the 

 various synonyms given above ; but my series of specimens is not 

 very large, and it is possible there may be two allied forms con- 

 founded under the present head. Herr v. Pelzeln (Orn. Bras, 

 p. 223.) keeps S. cucullata and S. atricapilla distinct, remarking 

 that the latter differs in the greater part of its body beneath 

 being white, and perhaps in its rather larger size. I have one of 

 Natterer's Cuyaba skins of the former species; and on com- 

 paring it with an example from Bio (which would certainly be 

 S. atricapilla of Max.), I find that it is decidedly larger (not 

 smaller), and has the belly suffused with fulvous. But the dif- 

 ferences are not such as would induce me to separate the two 

 birds specifically. 



I have examined a marked specimen of S. lafresnaiji of Bona- 

 parte in the Paris Museum. It appears to me to be only a 

 young male of the present species. 



11. Spermophila moreleti. 



Spermophila moreleti, Bp. Consp. p. 497 ; Sclater, P. Z. S. 

 1856, p. 302, et 1859, pp. 365, 378, Cat. A. B. p. 105; Sclat. 

 et Salv. Ibis, 1859, p. 17; Salvin, Ibis, 1859, p. 468, Cab. 

 Mus. Hein. p. 150; Baird, B. N. Am. p. 506. 



Sporophila moreleti, Cab. Journ. f. Orn. 1861, p. 4, Mus. 

 Hein. i. p. 150. 



Spermophila albogularis, Lawr. Ann. Lye. N. Y. v. p. 124. 



Supra nigra, uropygio speculo alari et tectricum alarium margi- 

 nibus albis : subtus alba, torque jugulari nigro : rostro 

 nigro : long, tota 3*8, alse 2, caudse 1'2. Fem. Olivacea, 

 alis et Cauda obscuris, tectricum marginibus rufescentibus : 

 rostro pallido. 



Hab. Texsis {Lawrence) ; New Leon, Mexico (Co^^c/^); Southern 

 Mexico {Salle et Botteri) ; Guatemala {Salvin) ; Honduras 

 {Whitely). 



