88 Ridgway — New Species of Birds from Tropical America. 



Venezuela, and the Guianas, in deep russet, instead of olive-yellowish, 

 pilemn and darker color of tail and remiges. 



Measurements of type. — Wing (outer primaries wanting); tail, 35; cul- 

 men (from base), 24.5; tarsus (feet wanting). 



Aulacorhynchus prasinus virescens subsp. now 



Type from Chasniguas, Honduras. No. 120,263, V. S. Nat. Mus., 

 adult female. Collected by E. Wittkugel, .Tan. 2, 1891. 



Differing from A. p. prasinus, of southeastern Mexico, in smaller size 

 (except hill and feet), relatively much shorter tail, deeper chestnut of 

 under tail-coverts, and more yellowish green of under parts (the chest 

 never tinged with blue), and white of throat of a yellowish hue, especially 

 next to the green of lower foreneck. 



Measurements of type. — Wing, Hi); tail. 104.5; culmen, 58; tarsus, 34; 

 outer anterior toe, 26. 



The average measurements of four adult males of the same form from 

 northern Nicaragua, compared with those of six adult males of A. p. 

 prasinus from Vera Cruz and rive from Chiapas and Guatemala, are as 

 follows: 



Four adult males from Nicaragua: Wing, 122.1; tail, 108; culmen, 

 74.7 ; tarsus, :'>4.4. 



Five adult males from Chiapas and Guatemala: Wing, 132.5; tail, 

 122.2; culmen, 74. f>; tarsus, 33.0. 



Six adult males from Vera Cruz: Wing, 120.2; tail, 113.4; culmen, 

 7:;.l ; tarsus, 34.1. 



Pteroglossus torquatus erythrozonus subsp. nov. 



Type from Temax, Yucatan. Xo. 106,310, T T . S. National Museum ; 

 adult; collected by <ieo. F. Gaumer. 



Similar to P. t. torquatus, but much smaller, and color of thighs and 

 under tail-coverts paler (dull cinnamon-rufous instead of chestnut ). 



Measurements of type. — Wing, 140; tail, 136.5; culmen, 89.5; tarsus, 

 32; outer anterior toe, 27.5. 



Monasa rikeri sp. nov. 



Type from Dianiantina, lower Amazon, Brazil, .June 30, 1887. No. 

 121,033, U. S. National Museum, adult male. Collected by C. B. Riker. 



Agreeing with M. grandior Sclater and Salvin, of Costa Rica and 

 Nicaragua, in black malar apex combined with white or light rusty chin 

 and forehead, but decidedly smaller, with the lower throat, crown, and 

 occiput slate color or deep slate-gray instead of black; and white (or pale 

 rusty) capistrum rather more restricted. Differing from M. peruana 

 Sclater, of the Upper Amazon Valley, in the black ( instead of white) 

 malar apex. 



Measurements of type. — Wing, 121.5; tail, 115.5; exposed culmen, 32; 

 tarsus, 20.5 ; outer exterior toe, 17.5. 



