OENOCHRUS. - OLIGOCERCUS. 
743 
bicincta Vieillot, Encycl. méth. = Pterocles bicinctus Tem. 
cata Vieillot, Analyse 52. — Pterocles alchata Lichtst. 
nipica Vieillot, EncycJ. méth. = Pterocles tricinctus Swains. 
namaqua Vieillot, Encycl. méth. == Pterocles namaqua Gray. 
OENOCHRUS Bonaparte, Revue magaz. Zool. 1854. = Chrysotis Swains. 
augustus Bonaparte, Revue magaz. Zool. 1854. = Chrysotis augusta Gray. 
havanensis Bonaparte, Revue magaz. Zool. 1854. == Chrysotis cyanops Finsch. 
vinaceus Bonaparte, Revue magaz. Zool. 1854. = Chrysotis vinacea Gray. 
OEROLIA Vieillot. = Erolia Vieill. 
OGNORHYNCHUS icterotis Bonaparte, Compt. rend. 1857. = Conurus icterotis 
Souan. 
OIDEMIA (Anatidae. — oiOTjfxa tumor) Fleming, philos. Zool. 1822. II. 260. — 
Gray, Genera Birds 1844. III. 624. = Anas Lin. 
Si/non.: Melaiietta Boie. — Maceranas, Macrorhamphus Less. — Pelionetta Kaup. 
Bill as long as the head, with the culmen much inflated at the base above 
the nostrils, and the sides at the base more or less swollen and bare of 
feathers; the fore part of the upper mandible suddendly much depressed and the 
sides dilated and membranous, with the tip armed with a very broad flat nail; 
the lamellae of the upper mandible prominent, strong and widely set; the nostrils 
oval and placed near the middle of the bill. Wings moderate, pointed with the 
first or second quill; the longest, more which have the second quill the longest 
have the first deeply notched at about half its length. Tail short, pointed and 
graduated. Tarsi more than half the length of the middle toe. Toes lengthened 
and united by a full web. 
americana Richardson, Fauna amer. bor. == Anas Wilsoni. 
chiloensis King. = Anas cinerea Gmel. 
Deglandi Bonaparte, Coll. Delattre 94. == Anas fusca Lin. 
fusca Fleming, brit. anim. 119. a= Anas fusca Lin. 
gibbera Brehm. = Anas nigra Lin. 
leucocephala Fleming, brit. anim. 119. = Anas nigra Lin. 
megaurus Brehm, Naumannia. == Anas nigra Lin. 
nigra Fleming, brit. anim. 119. s= Anas nigra Lin. 
nigripes Brehm, Naumannia. = Anas nigra Lin. 
patachonica King, Proc. Zool. Soc. 1831. I. 15. = Anas cinerea Gmel. 
perspicillata Swainson, Faun. bor. amer. II. 449. = Anas perspicillata Lin. 
velvetina Cassin, Proc. acad. Philadelphia 1850. V. 126. == Anas fusca Lin. 
OITRUS Rafinesque 1815. s== Luscinia Lin. 
OLIGOCERCUS (Malurinae. — oXt/yoç parvus, xspxoç cauda). — Cabanis, 
Journ. Ornith. 1853. I. 109. — 4 Specc. 
Synon.: Sylvietta Lafresn. — Trochlotides , Oligura Rüpp. — Sylviella Sundev. 
icteropyga Cabanis, Journ. Ornith. 1853. I. 109. [Africa merid. occid. 
Sylvietta icteropygialis de Lafresnaye, Revue Zool. 1839. 258. 
lutescens Cabanis, Journ. Ornith. 1853. I. 109. [Africa occid. 
Sylvietta lutescens Lesson, Descr. Man. Ois. 298. 
microurus Cabanis, Journ. Ornith. 1853. I. 109. [Senegal. 
Troglodytes micrurus Rüppell, Neue "Wirbeith. Abyss. Tf. 41. Fig. 2. 
Sylvietta brachyura de Lafresnaye, Revue Zool. 1839. 258. 
Oligura micrura Rüppell, syst. Uebers. NO Africa 56. 
Sylvia brachyura Lichtenstein, Mus. berol. 
Sylvietta brevicauda Lefebvre, Oiseaux Abyss. Tb. 6. 
Oligura brachyptera Bonaparte, Conspect. Avium I. 257. 
Oligura brachyura Sundevall, Vetensk. Handig. 1857. 39. 
Sylvietta micrura Hartlaub, Ornith. W Africa 63. 
rufescens Cabanis, Journ. Ornith. 1853. I. 109. [Africa merid. 
Crombec Levaillant, Oiseaux Afrique Tb. 135. 
Dicaeum rufescens Vieillot, Encycl. méth. 609. — Layard, Birds SAfr. 34. 
Sylvietta crombec de Lafresnaye, Revue Zool. 1839. 258. 
