236 AVES : HERODIONES. — XXXVI. 
Families of Herodiones. 
a. Sides of upper mandible with a deep narrow groove, extending from the 
nostrils to the tip; skull schizorhinal. Ibises. 
b. Bill very broad, much flattened, and ee widened toward tip, only 
the point decurved. : : -/. » » PLATALEIDAL oT. 
bb. Bill slender, hibictons senile deounnell for its whole length. 
Ipipips, 138. 
aa. Sides of upper mandible without long groove; skull holorhinal. Storks 
aud Herons. 
c. Hind toe inserted more or less above the level of tke others; its claw 
short; claws broad and flat, apes on a horny pad or shoe; middle 
claw not pectinate. . . . os @ ‘ GICONID at) 138. 
cc. Hind toe inserted on the fae of the rae claws narrow, arched; the 
middle one pectinate on its inner edge; ‘bill straight, inion 
ARDEID&, 140. 
Famity CXXXVII. PLATALEIDAL. (THE SPoonsiz.s.) 
Bill long, flat, broad and spoonshaped at the end, otherwise essen- 
tially as in the [bididw. Genera 2; species 6, in most regions. 
a. Trachea simple (not convoluted within the thorax). . . . AJAJA, 369. 
369. AJAJA Reichenbach. (Brazilian name.) 
724, A. ajaja (L.). RosEatTe SpoonsiLu. Chiefly white, back 
and wings rose-pink; tail buffy ; skin of the bald head variegated. 
L. 34. W.15. B.7; its width 2. T.5. Tropical America, N. 
to S. Il. 
Famity CXXXVIII. IBIDIDAL. (Tue IsiszEs.) 
Bill very long and slender, compressed, cylindric, curved through- 
out, the upper mandible with a deep groove reaching nearly or 
quite to tip; legs rather long, the toes slightly webbed at base. 
Head more or less naked; plumage stork-like, without powder- 
down tracts; wings broad; tail short; tarsus scutellate in front, 
in our species. Skull schizorhinal. Genera 10 or more; species 
24; of the lakes and swamps of warm regions. Sexes alike. 
a. Head of adult wholly naked anteriorly; no crest; claws curved. 
GUARA, 370. 
aa. Head of adult feathered except on lores; crown with a short crest; claws 
nearly straight. Me ae hae ee renee spe re 
370. GUARA Reichenbach. (From guarauna, a Brazilian name.) 
725. G. alba (L.). Wurte Isis. Spanish CurLEw. Pure 
white, tips of longer quills glossy black. L. 24. W.11. T. 4. 
Bb. 7. Southern States, N. to S. Ind. 
371. PLEGADIS Kaup. (mdAnyds, scythe.) 
726. P. autumnalis (Hasselquist). Grossy Isis. Rich dark 
purplish-chestnut ; head, back, wings and tail metallic purplish- 
