(7 ) 

 11. Calospiza mexicana boliviana (Bp.) 



[Tanagra mexicana Linnaeus, Syit. Nat xii. 1. p. 315 (17G6. — ex Brisson : Cayana (excl. syn. 



Hernandez — Mexico)] . 

 Callospisa boliviana Bonaparte, C. Rend. Ac. Sci. Paris xxxii. p. 80 (1851. — Guarajos, East Bolivia, 



coll. D'Orbigny. — Type in Paris Museum examined). 

 Calliste boliviana Sclater & Salvin, P.Z.S. 1807. p. 571 (Capim River) ; Chapman & Riker, 



Auk, 1890, p. 267 (Santarem). 

 Callilteflaviventris (nee Viellot !) Pelzeln, Zur Orn. Brasil. xii. (1809) p. 207 (Guapore, Borba, 



Barra do Rio Negro). 



No. 499. ? ad., Itaituba, 28. i. 00. " Iris brown." 



This specimen agrees perfectly with others from Para (coll. Steere — Mob. Tring) 

 and those collected by batterer near Borba, Rio Madeira, and on the banks of the 

 R. Guapore.* "When lately in Paris I compared some of these skins with Bonaparte's 

 type, and found them identical. All have the shoulder-patch of a dark azure blue, 

 only some of the innermost smaller wing-coverts being slightly tinged with turquoise 

 blue. Examples from N.E. Peru, East Ecuador and Bogota have, as a rule, this 

 patch quite uniform azure blue, but some of them agree with the Brazilian ones. In 

 the intensity of the yellow belly there is no constaut difference between specimens 

 from various localities. 



Three skins from Barra do Rio Negro (=Man;ios) differ in having the shoulder- 

 patch decidedly more mixed with turquoise blue, thereby forming the transition to 

 C. m. mexicana, of Cayenne and Surinam, C. m. media Berl. and Hart, of the Orinoco 

 valley, and C. m. tieilloti (Scl.) of Trinidad. In these three forms, however, the 

 shoulder is uniform nile blue, without any trace of azure blue, and in the two first 

 named the belly is very much paler yellow. 



12. Tachyphonus luctuosus Lafr. & D'Orb. 



TaehyphomtB luctuosus Lafresnaye et D'Orbigny, Syn. Ar. i. in Mag. Zool. 1837 cl. ii. p. 29 

 (Guarayos, Bolivia) ; Chapman & Riker, Auk, 1890, p. 207 (Santarem). 



No. 526. S ad., Itaituba, 31. i. 08. " Iris brown." 



Not different from Bolivian specimens, perhaps a little more glossy on the lower 

 surface. 



13. Pitylus grossus (Linn.) 



Cfr. Nov. Zool. xiii. p. 359. 



Pitylus grossus Chapman & Riker, Auk, 1890, p. 267 (Santarem). 



No. 517. 8 ad., Itaituba, 30. i. 06. "Iris light brown." 

 No. 519. ?, Itaituba, 30. i. 06. "Iris brown." 



14. Sporophila castaneiventris Cab. 



Sporophila castaneiventris Cabanis in Schomburgk, Reisen Brit. Guiana iii. (1848) p. G79 (Cumaka, 

 coast of British Guiana) ; Chapman & Riker, Auk, 1890, p. 268 (Santarem). 



Nos. 531, 556. c? t? ad., Urucurituba, 0, 9. ii. 05. " Iris brown." 



No. 464. ? , Itaituba, 18. i. 00. " Iris brown." 



The males are not different from Gniauan and Upper Amazonian skins, except 

 for the tail being a very little shorter. The female also agrees very well with those 

 from other localities. 



* I am much obliged to Dr. von Lorenz for kindly sending mc the whole series of the Vienna Museum. 



