902 
are concerned at least, by the extensive co- 
hesion of the inner and middle toes, the 
reticulation of the posterior face of the tar- 
sus, and especially by the shortness of the 
first primary in the male, together with the 
slight hooking of the bill. 
126 A. PLATYPSARIS. (Gr. aris, 
platus, broad; ap, psar, a starling. Bona- 
parte, 1854; Sclater, P. Z.8.,1857, p.72. Type 
Pachyrhamphus latirostris, Bonap.) BECARDS. 
Nostrils hidden by bristly feathers; hook of 
bill very slight, and bill not much flattened; 
rictal bristles long ; head somewhat crested; 
Ist primary short; 2d emarginate in the 
male; tail rounded; tarsus with large scutella 
on the inner side. Sexes dissimilar. Two 
species occur on the Mexican border of the 
United States. 
No. 394 bis, p. 444. Add: Platypsaris 
aglaizw. Rosr-THROATED BecarpD. @ adult: 
above, slate-gray, with the crown glossy 
black; below, ashy-gray, with a rosy patch 
on the throat. © above dark rusty brown, 
becoming slaty on the crown. Length 6.60; 
wing 3.50; tail 2.75; bill 0.65. Eastern 
Mexico, north to the valley of the Rio Grande. 
(Pachyrhynchus aglaie, Lafresnaye, Rev. 
Zool., 1839, p. 98; Pachyrhamphus aglaie, 
Baird, Birds North America, 1858, p. 164, 
and Mex. Bound. Survey, 1859, II., pt. ii, pl. 
ix., fig. 1; Platypsaris aglaie, Sumichrast, 
Mem. Bost. Soc. Nat. Hist. I, 1869, p. 
558.) 
No. 394 ter, p. 444. Add: Platypsaris 
albiventris. WHITE-BELLIED BEcCARD. 
dé adult: resembling the preceding, but 
lighter and more ashy-gray above, the crown 
slaty, the under parts pale grayish, whitening 
on the belly. 9 correspondingly paler than 
that of P. aglaie. Western Mexico, north 
into southern Arizona. (Hadrostomus albi- 
ventris, Lawrence, Ann. Lyc. Nat. Hist., 
VIIL., 1867, p. 475; Platypsaris albiventris, 
Ridgway, Man. N. A. Birds, 1887, p. 325.) 
126 B. PACH YRHAMPHUS, (Gr. rayis, 
pachus, thick ; pdpdos, rhamphos, beak. G. R. 
Gray, List Genera Birds, 1888, p. 41.) Re- 
sembling the preceding; bill more flattened, 
with shorter rictal bristles; tail graduated 
about 4 an inch; tarsus naked on inner side. 
SECOND APPENDIX. 
Sexes very unlike. One species found on 
the Mexican border of the United States. 
No. 394 quater, p. 444. Add: Pachy- 
rhampus major. GREATER BecarpD. ¢ ad- 
ult : above, ashy-gray, becoming glossy black - 
on the back and crown, and white on the 
seapulars; below, pale ash, whitening on 
throat, belly, and crissum; wings black, 
with white edging or tipping of the coverts 
and some inner secondaries ; tail black, with 
white tips of the feathers. 9 mostly chest- 
nut brown, paler below, black on the crown 
and ends of the tail-feathers. Length 6.50; 
wing 3.25; tail 2.65; bill 0.60. Eastern 
Mexico, north to the valley of the lower Rio 
Grande ; introduced to our fauna by Baird in 
1858 under the name of Bathmidurus major, 
and figured in Report of the Mexican Boun- 
dary Survey, 1859, pl. ix, fig. 2, but like 
Platypsaris aglaie lost sight of for some years, 
and not yet recognized in the Committee’s 
list. (See Sclater, P. Z. S., 1857, p. 78; 
Ridgway, Man. N. A. Birds, 1887, p. 326.) 
No. 395, p. 450. Nyctidromus albicollis be- 
comes JV. a. merrilli, Sennett, Auk, Jan. 
1888, p.44. The Texan form is distinguished 
by its larger size (wing and tail each averag- 
ing 7.00 inches), prevailing gray coloration 
of the upper parts, and in the male the re- 
duction or extinction of the white on the 
outer tail-feather. 
No. 898 bis, p. 879. Phalenoptilus nuttalli 
nitidus, the Frosted Poor-will, is confirmed by 
the Committee. 
No. 398 bis, a, p. 4538. Phalenoptilus 
nuttalli californicus is proposed as a new 
subspecies from the coast of California by 
Ridgway, Man. N. A. Birds, 1887, p. 588, 
note, and confirmed by the Committee. Two 
skins are said to be “altogether darker than 
any from elsewhere.” 
No. 400 bis, p. 454. Add: Chordediles 
popetue sennetti, Coues, Auk, Jan. 1888, p. 
37. This is that pale subspecies of the Night- 
hawk which is characteristic of the un- 
wooded country from Texas to Dakota. It 
is recognized by the Committee under the 
name of Chordeiles virginianus sennetti after- 
ward bestowed by Chamberlain, Syst. Tabl. 
Canadian Birds, 1888, App. A, p. 14. 
