Measurement (26,374). 
gape, 1.35; nostril,. 
MELANOTIS—DONACOBIUS. 
dT 
Length, 10.75; wing, 4.80; tail, 5.40; bill from 
70; tarsus, 1.18 ; middle toe and claw, 1.10; claw alone, .30. 
| 
Smith-|Collec-. Sex When 
sonian| tor’s | and Locality. Gollenred Received from Collected by 
No. No. | Age. i 
26,374 oe Xalapa. John Krider. D Oca 
29,5094 | 4,282 et Mexico. Berlin Museum’ Oi ites 
29,719 He a6 et DeiSaussucey ey lee fetter. 
28,031 35 ae Mirador, Mex. Aor Des C'Sartorinsy ity oe secs 
29,355 99 fof Colima, Mex. Jan. 1863. J. kontus, ~~ - 2 |S Sie ercnre 
30,135 151 fof ee Feb. 1863. PPE oe > divas Nee Oe Basretstetase 
34,013 | 183 re) Mazatlan. ‘| June, 1862.} A.J. Grayson. |  .....- 
34,014 184 fof ee se baal Cwails eehetd WEIR: OCnO ic 
: 17 a Xalapa. Cab. Lawrence. D’0ca 
(29,355.) Length, 10. Iris brown. (30,135.) Length, 10.50. Iris brown. 
Melanotis hypoleucus. 
Melanotis hypoleucus, Hartuaus, R. Z. Oct. 1852, 460.—Is. Jour. f. 
Ornith. 1853, 30.—Sciarer & Sanviy, Ibis, I, 1859, 7 (eggs).—Is. 
II, 1860, 29.—Scrater, P. Z. 8. 1859, 337.—Is. Catal. 1861, 7, no. 43. 
Hab. Guatemala. 
Total length, 10.00; wing, 4.00; tail, 4.90; difference of tail feathers, 1.25; 
exposed portion of Ist primary, 1.50; of 2d, 2.40; length of bill from forehead, 
1.15, from nostril, .68; along gape, 1.32; tarsus, 1.26; middle toe and claw, 
1.10; claw alone, .30; hind toe and claw, .75; claw alone, .37. 
Smith- Collee-| Sex When 
sonian tor’s | and Locality. Gollected Received from Collected by 
No. No. Age. ; cy 
20.395 | 373 Coban, Vera Paz. OveSaliney eh ol lute oa steve wes 
16,843 Guatemala. JeGonldsy lela We ae teaser 
a 18 AD ve Cab. Lawrence. | _—......... 
DONACOBIUS, Swainson. 
Donacobius, Swarnson, Class. Birds, II, 1831, 236. (Type D. vociferans, 
Sw. = Turdus atricapillus, L.) 
Bill as long as head, notched. Bristles distinct, reaching to nostrils. Nasal 
groove broad, filled by a plane, tense, naked, thin edged membrane; the 
nostrils pervious, occupying the anterior extremity of the groove, bordered 
behind only by membrane ; broadly oval, the axis rather oblique. A large, bare 
naked space on each side the neck. Wings shorter than the much graduated 
tail. First primary about half the longest (fifth); 2d shorter than the 
secondaries. Tail feathers broad ; outer webs of lateral feathers having their 
outer webs half as wide as the inner. Graduation excessive; outer feather 
about half the middle. 
Tarsi little longer than middle toe and claw, with six scutelle anteriorly 
fused into a continuous ungrooved plate on the outer side. Claws lengthened, 
moderately curved. Inner toe cleft to base. 
