606 Bulletin American Museum of Natural History. [Vol. XXXVI, 



northern representative C. s. antioquioe in the more northern parts of the 

 Central Andes and, as said above, indicates the probable mergence of that 

 form with the strongly differentiated C. s. victorini on the eastern slope of the 

 Central Andes. 



Specimens from La Sierra, near Almaguer, in that part of southern 

 Colombia where the Andes form one complicated range, agree with Quito 

 specimens and are thus typical of cyanoptera in which the back is black, the 

 rump shghtly and rarely not at all tinged with green, the margins to wings 

 and tail but little hghter than the color of the shoulder. This form persists 

 on the Western Andes (Cerro Munchique, La Florida, Gallera, Cocal, San 

 Antonio) but on the western slope of the Central Andes an approach toward 

 antioquioe is evident in specimens from Miraflores, which while having the 

 wings and tail-margins little if any lighter, have decidedly more green in the 

 back, this color encroaching on the interscapulum, a feature which in addi- 

 tion to the paler blue wing and tail-markings characterizes antioquioe. The 

 intergradation of cyanoptera with antioquioe is shown by these specimens. 



In three specimens from Rio Toche and El Eden, on the eastern slope of 

 the range, the green in the back is still more extensive than in antioquioe 

 reaching to the nape and they are therefore intermediate between antioquioe 

 and victorini. The Subtropical Zone doubtless extends along the eastern 

 slope of the Central Andes continuously from El Eden to La Candela, where 

 we have taken dark colored specimens of victorini, connecting the ranges 

 of these birds and doubtless the birds themselves. 



This case is interesting, for while victorini and somptuosa are obviously 

 representative forms, it has not heretofore been suspected, I believe, that 

 they intergrade, and the virtual proof of this fact indicates the import- 

 ance of intensive collecting in a limited area. 



San Antonio, 10; Cerro Munchique, 7; La Florida, 3; Gallera,!; Cocal, 

 1; La Sierra, 2; Miraflores, 7; Salento, 2. 



(4267) Compsocoma notabilis (Jard.). 



Tanagra notabilis Jard., Edinb. N. Phil. Journ., II, 1855, p. 119 (e. Ecuador). 

 Compsocoma notabilis Hbllm., P. Z. S., 1911, p. 1111 (Tatamd Mt., 6700 ft.). 



Two specimens from the Subtropical Zone of the Western Andes agree 

 with one from Ecuador. 

 N6vitaTrail(7200ft.),2. 



(4268) Dubusia taeniata (Boiss.). 



Tanagra tceniata Boiss., Rev. ZooL, 1840, p. 67 (Bogotd). 

 Dubusia tcmiata Sol. & Salv., P. Z. S., 1879, p. 500 (Sta. Elena). 



