102 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
of interscapular area with more or less of white at base; lateral rec- 
trices sometimes narrowly tipped with white; bare skin of head pale 
blue (azure or campanula blue back of eyes); bill, tarsi, feet, and 
claws plumbeous; iris dark red;* length (skins), 147-170 (160); 
wing, 76.5~81.5 (79) ; tail, 58-64 (60.9); culmen 20-23 (21.7) ; tarsus, 
29-32 (31.1); middle toe, 18.5-20.5 (19.4).° 
Immature male ( = Myrmelastes lawrencit Salvin and Godman) .— 
Similar to the adult male but entire pileum feathered (only the loral 
and orbital regions being naked) and greater wing-coverts wholly 
black. 
Adult female——Pileum and hindneck rufescent brown (nearly 
mummy brown), somewhat more rufescent anteriorly and laterally; 
back, scapulars, and rump plain deep olive, the upper tail-coverts 
more rufescent; tail dark warm-sepia brown; lesser wing-coverts and 
margin of wing deep tawny-ochraceous, the former with concealed 
base of feathers dusky; middle coverts black, broadly and sharply 
tipped with tawny-ochraceous; greater coverts bistre brown, passing 
into black subterminally, their tips sharply and rather broadly tawny- 
ochraceous; remiges russet-brown or vandyke brown, the edges of 
outermost primaries lighter (more russet); sides of head and neck 
and general color of under parts, including under wing-coverts, plain 
bright cinnamon-rufous or rufous-tawny, somewhat paler on abdomen 
and passing into olive-tawny on flanks and under tail-coverts; ‘‘ naked 
skin of head pale blue (azure back of eye); bill, tarsi, feet, and claws 
plumbeous; iris dark red;”* length (skins), 151-163 (156); wing, 
71-79 (75.9); tail, 59-60.5 (59.4); culmen, 19.5-21.5 (21.1); tarsus, 
28.5-30.5 (29.6); middle toe, 19—-19.5 (19.1) .¢ 
Young male——Similar to the adult female, but pileum and hind- 
neck duller and less rufescent brown, middle and greater wing-coverts 
without ochraceous or tawny tips, and the tawny-ochraceous which 
2©, W. Richmond. 
b Ten specimens. 
eC. W. Richmond, manuscript. 
d Six specimens. 
Locality. Wine: || matty ¢ Sue | ee eee 
MALES. 
Six adult males from Costa Rica.........-...--..2..-.2.22.--- 76.2 61.1 21.8 31.6 19.8 
Three adult males from Nicaragua..............2-.2.....--0005 78.8 60.8 21.7 30.8 19.3 
One adult male from Guatemala..................222. 0.020200 76.5 60 21.5 29 ig.5 
FEMALES. 
Three adult females from Costa Rica.............-..2+-.-22--- 75.7 59.5 20.8 30 19.2 
One adult female from Nicaragua...........---...2.2...----0-- 76 59 21.5 30.5 19 
One adult female from Honduras............-..22..22022220055 76.5 59 21 28.5 19 
One adult female from Guatemala..............22-..222-2200- 76 60 21.5 29 19 
