TACHYTKIORCHIS. — TAENIOPÏERA. 585 
wing. Third primary the langest; first to third primaries distinctly emarginated 
on the inner vane; fourth primary indistinctly emarginated; the primaries of old 
birds without bands and with white spots. Tail with four bands, which grow 
narrower with age, and disappear almost entirely on the outer and middle 
feathers. Tarsus and digits slender and short; the latter with rather broader soles. 
TACHYTKIORCHIS Kaup, Oken's Isis 1847. 328; Wiegm. Arch. 1850. XVI. 39. 
— Bonaparte, Consp. Av. I. 17. Buteo Cuv. 
Die sehr langen Flügel überreichen die Spitze des kurzen Schwanzes; Flügel- 
spitze länger als bei andern Bussarten, geht V3 mal in die Länge des Oberflügels; 
' 2. und 3. Schwinge scharf, 4. und 5. schwach an der Innenfahne ausgeschnitten. 
Species vide Buteo. 
TADORNA Leach 1822.— Fleming, Philos. Zool. 260.— Gray, Genera Birds 
1844. III. 612. Anas Lin. 
Bill shorter than, or as long as the head, higher at the base than broad, 
with the culmen concave in the middle, depressed and curved upward to the tip, which 
is suddendly hooked with a strong narrow nail; the basal part of the lateral 
margin nearly straight and the apical part much curved upwards; the lamellae 
slender, rather widely set and more strongly constructed anteriorly on the inner 
portion of the lateral margins; the nostrils large, oval and placed near the base 
and culmen. Wings moderate pointed with the second quill the longest and 
^ armed on the shoulder with a tubercle. Tail moderate and nearly even. Tarsi 
strong, rather shorter than the middle toe. Toes short and fully webbed; the 
hind toe moderate and elevated and slightly lobed ; the claws moderate and curved. 
aegyptiaca Boie, Oken's Isis 1826. 81. = Anser aegyptiacus Briss. 
Belloni Ray, Synops. Av. 140. = Anas tadorna Lin. 
cana Sclatek, Proc. Zool. Soc. 1864. 191. — Anas cana Gmel. 
casarca Macgillivray , brit. Ornith. II. 163. = Anas casarca Lin. 
familiaris Boie, Oken's Isis 1822. 56. = Anas tadorna Lin. 
gibbosa, litoralis, maritima Brehm, Vögel Deutschi. 856 — 858. = Anas 
tadorna Lin. 
naevosa Gray, Genera Birds III. 613. = Jinas naevosa Gould. 
nivea Brehm, Vögel Deutschi. 854. — Anser hyperboreus Pall. 
radjah Gray, Genera Birds III. 613. = Anas radjah Lesson. 
rutila Boie, Oken's Isis 1822. 563. — Anas casarca Lin. 
tadornoides Sclater, Proc. Zool. Soc. 1864. 191. = Anas tadornoides Jard. 
variegata Sclater, Proc. Zool. Soc. 1864. 191. — Anas variegata Gmel. 
vulpanser Fleming, brit. anim. 126. = Anas tadorna Lin. 
TAENIAENAS Bonaparte 1854. = Taenioenas Reiche. 
TAENIDIASTES Reichenbach, nat. Syst. 1853. — Bannister, Proc. acad. Philad. 
1870. 132. ~ Anser antarcticus Vieill. 
Bill robust, varying in color with the sexe, as also does the plumage; lower 
mandible deep, nail prominent, lamellae not projecting. Feet robust, varying in 
color with the sexe, tarsus shorter than middle toe with claw. Colors of female 
with metallis reflections on the speculum. 
TAENIDIURA Reichenbach, nat. Syst. 1850. Tf. 52. = Formicivora Swains. 
TAENIOENAS Reichenbach, Tauben 59. — Columba albitorques Rüpp. 
Schnabel sehr kurz, weisses Band im Genick. 
TAENIOGLAUX Kaüp, Oken's Isis 1848. 769. = Noctua Savg. 
Specc. : Athene erythroptera , A. castaneoptera, A. cuculoides, A. capensis. 
TAEMIOPTERA (Fluvicolinae. — "üaivia fascia, TCTSpov ala). — Bonaparte 
1825. — Gray, Genera Birds 1847. L 241. 
Synon. : Tyraiinus Vieill. — Xolmis Boie. — Nengetus , Blechropus Swains. — Orsi- 
pus Nordm. — Pepoaza d'Orb. — Pyrope, Ochthodiaeta, Ochthoeca, Hemipenthica Cab. — 
Mecocerculus Sclat. 
Bill rather short, slightly depressed and broad at the base, with the culmen 
straight towards the tip, luhich is suddenly curved and emarginated ; the sides com- 
pressed and the gape furnished with short weak bristles; the gonys long and 
