168 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxiv. 
19. MICRASTUR MELANOLEUCUS (Vieillot). 
BLACK AND WHITE MICRASTUR. 
One speciiiien, a male, secured at San Julian on July 28, It was in 
full molt, chang'ino- above from a brown and rufous to a ])laek and 
white plumage. Its stomach contained a sparrow {ArrenioiKJ'p.s). 
Cere greenish, irides brown, tarsi 3^ellow, 
20. RUPORNIS MAGNIROSTRIS (Gmelin). 
LARGE-BILLED RUPORNIS. 
This noisy hawk was common in the dryer foothills at La Guaira 
and at San Julian. A female shot on July 19 had its stomach filled 
with a mass of grasshoppers, crickets, roaches, and other insects, and 
parts of several scorpions. Its cere, lids, irides, base of lower mandi- 
ble, and tarsi were 3'ellow, A male shot Jul}^ 26 had orange cere itnd 
tarsi. Its stomach was tilled with a mass of insects and with parts of 
some small striped lizards. The diet of grasshoppers gives to these 
birds a characteristic odor which clings to their skins for some time 
after they have lieen cured. 
21. LEUCOPTERNIS ALBICOLLIS (Latham). 
WHITE HAWK. 
Several of these line hawks were seen at San Julian, but only one 
was obtained, a female taken July 16. Its stomach contained a varied 
assortment — pieces of a snake, crabs, beetles, and grasshoppers. On 
July 31 one was seen flying around its nest, a Inilk}' mass of sticks in 
the top of an immense thorny-trunked tree. 
Irides light brown, tarsi yellow. 
Family FALCONIDiE. 
22. GAMPSONYX SWAINSONI Vigors. 
SWAINSON'S PEARL KITE. 
At San Julian about sunset on July 29 this small hawk, which was 
at first taken for a gray kingbird, was seen to light in the dead top 
of a small tree near the road. On Ijeing shot it started oti' as if 
untouched, but after going some 80 yards spread its wings and settled 
gently to the earth, where it was found dead. Upon picking it up I 
was at once struck by its coloration, the absence of V)ars or stripes on 
its plumage, the glistening white luider surface of its wings, its rela- 
tively heav}' feet with the tarsi feathered halfway to the toes, the 
heron-like powder down patches on its hips, and its crimson irides. 
Its cere was green, tarsi yellow. This was the only one seen, although 
