TROGLODYTIDZ. 539 
6’. Tail longer than wing, much rounded. 
c. Exposed culmen decidedly shorter than middle toe, without claw. 
a, Plumage varied, the wings and tail distinctly (often conspicuously) 
marked with white. 
Gonys straight, or sometimes even slightly concave; tarsal 
scutelle very distinct.............cceee Mimus. (Page 541.) 
d@’, Plumage plain, the wings and tail without white markings. 
e'. Larger (wing more than 4.00, tail 5.00, or more); gonys 
straight; tarsal scutelle very distinct. 
Color plain brown above, dull whitish beneath. 
Mimodes. (Page 542) 
e. Smaller (wing less than 4.00, tail less than 4.50); gonys appre- 
ciably convex; tarsal scutelle indistinct (sometimes nearly 
obsolete). 
f*. Exposed culmen shorter than distance between tips of 
longest and shortest tail-feathers; color slate-gray 
above, with black cap and tail, ash-gray below, with 
chestnut under tail-coverts. 
Galeoscoptes. (Page 542.) 
J’. Exposed culmen longer than distance between tips of 
longest and shortest tail-feathers ; color uniform glossy 
violet-black, the wings and tail more bluish or green- 
IS Dt ssgciss saeecta stations wecewbe dane iaeat sega nae oe Melanoptila. 
ce. Exposed culmen equal to or longer than middle toe, without claw. 
d'. Above plain grayish blue, the lores and ear-coverts deep black ; be- 
neath grayish blue or pure white................ secseeeee Delanotis? 
d?, Above some shade of brownish, grayish, or dusky; beneath, nei- 
ther grayish blue nor pure white. 
él. First quill very little, if any, longer than tarsus (sometimes 
shorter); throat and middle of breast neither red nor 
TULOUS .....ceeceeceeeeeteeeeeeees Harporhynchus. (Page 543.) 
é. First quill longer than tarsus and middle toe combined; throat 
and median lower parts rose-red (in male) or rufous (in 
formale)......cceceseseetereeeees seanensoees Seadvanean te Rhodinocichla? 
a’. Rictal bristles obsolete, or very indistinct; inner toe united at base to middle toe 
by at least half the basal phalanx; wing less than 3.50. (Subfamily Trogio- 
dytine.) 
. Wing more than 3.00........ Pieiet dacsieetcae ees peuncee Heleodytes. (Page 547.) 
1 Melanoptila Scuatzr, P. Z. 8. 1857, 275. Type, M. glabrirostris Sct. (Habd., coast of Yucatan and Hon- 
eee Bonap., Consp. i. 1850, 276. Type, Orpheus cerulescens Swains. Two species: (1) M. cxru- 
lescens (Sw.), of Mexico, which is grayish blue beneath, as well as above, ind (2) M. hypoleucus Hantt., of 
Guatemala, which is pure white beneath, except along sides and on under tail-coverts. 
8 Rhodinocichla Hartt, Journ. fiir Orn. 1853, 33. Type, Furnariue roseus Less. Two species: (1) R. 
rosea (Less.), from Costa Rica, Colombia, and Venezuela; and (2) R. schistacea Ripew., from western 
Mexico (Mazatlan, Colima, ete.). 
