Retz's Helmetshrike

Here the details of the Retz's Helmetshrike named bird below:

SCI Name:  Prionops retzii
Protonym:  Prionops retzii Oefv.Vet.-Akad.Forh. 13 p.174
Taxonomy:  Passeriformes / Vangidae / Prionops
Taxonomy Code:  rethel1
Type Locality:  ad flumen Doughe, i. e. Okavango River.
Author:  Wahlberg
Publish Year:  1856
IUCN Status:  Least Concern

DEFINITIONS

PRIONOPS
(Vangidae; Ϯ White-crested Helmet-shrike P. plumatus) Gr. πριων priōn, πριονος prionos  saw; ωψ ōps, ωπος ōpos  eye; “BAGADAIS, Prionops.  Bec emplumé à la base, tendu, très-comprimé latéralement; mandibule supérieure échancrée et crochue vers le bout; l'inférieure retroussée et aiguë à la pointe. — Paupières dentelées.   Esp. Le Geoffroy, Le Vaill.   ...   Prionops [πριων, serra, ωψ, oculus].” (Vieillot 1816); "Prionops Vieillot, 1816, Analyse, p. 41. Type, by monotypy, "Le Geoffroy" of Levaillant = Lanius plumatus Shaw." (Rand in Peters 1960, IX, 310).  This genus was formerly and widely separated in the family Prionopidae, and some modern workers still favour that treatment.
Var. Trinops, Trionops (Laurent Raty in litt.).
Synon. Eressornis, Knestrometopon, Phaidrometopon, Sigmodus.

retzii
Prof. Anders Adolf Retzius (1796-1860) Swedish comparative anatomist, anthropologist (Prionops).

SUBSPECIES

Retz's Helmetshrike (graculinus)
SCI Name: Prionops retzii graculinus
graculina / graculinus
L. graculus or gracula unknown bird, identified with the Jackdaw (cf. Med. L. graculus  Rook or Jay).
● ex Gracula cyanotis Latham 1801, and “Héoro-taire graculé” of Audebert & Vieillot 1802 (syn. Entomyzon cyanotis).
● “The White-vented Crow. This bird is about the size of a Magpye; and in shape is not much unlike one, except that the tail is not cuneated ...but the whole habit and general appearance of the bird sufficiently justify its being regarded as a species of Corvus” (J. White 1790) (Strepera).

Retz's Helmetshrike (tricolor)
SCI Name: Prionops retzii tricolor
tricolor / tricolora
Late L. tricolor, tricoloris  tricoloured  < L. tri- three-  < tres  three; color, coloris  colour.
● ex “Ara tricolor” of Levaillant 1801, pl. 5 (‡Ara).
● ex Certhia viridis Scopoli, 1768, “Green Creeper” of Latham 1781, and “Blue-rumped Creeper” of Latham 1787 (syn. Cinnyris afer).
● ex “Grimpereau olive des Philippines” of d’Aubenton 1765-1781, pl. 576, fig. 4 (syn. Cinnyris jugularis).
● ex “Pitpit à coiffe bleue” of Mauduyt de la Varenne 1784 (syn. Dacnis lineata).
● ex "Héron bleuâtre à ventre blanc de Cayenne" of d'Aubenton 1765-1781, pl.350 (Egretta).
● ex “Azuvert” of Vieillot 1805 (Erythrura).
● ex “Baltimore bâtard du Canada” (= ♀) of d’Aubenton 1765-1781, pl. 506, fig. 2 (syn. Icterus galbula).
● ex “Quachochopitl” of Hernandez 1651, and Ray 1713, “Picus varius mexicanus major et minor” of Brisson 1760, “Épeiche du Méxique” of de Buffon 1770-1783, and “Varied Woodpecker” of Latham 1782 (unident. Picidae; ?Melanerpes sp.).
● ex “Choucas chauve de Cayenne” of d’Aubenton 1765-1781, pl. 521 (Perissocephalus).
● ex “Malkoha Rouverdin” of Levaillant 1807, pl. 225 (syn. Rhamphococcyx curvirostris).
● ex “Oie de la côte de Coromandel” of d’Aubenton 1765-1781, pl. 937 (syn. Sarkidiornis melanotos).
● ex “Figuier noir et jaune de Cayenne” of d’Aubenton 1765-1781, pl. 391, fig. 2 (syn. Setophaga ruticilla).
● ex “Chorlito tarso comprimido” of de Azara 1802-1805, no. 407 (Steganopus).
● ex “Tangara varié à teste verte de Cayenne” of Brisson 1760, “Tangara varié à tête verte de Cayenne” of d’Aubenton 1765-1781, pl. 33, fig. 1, “Tricolor” of de Buffon 1770-1783, and “Green-headed Tanager” of Latham 1783 (syn. Tangara seledon).
● ex “Merle Tricolor à Longue Queue” of Levaillant 1802, pl. 114 (artefact).

Retz's Helmetshrike (nigricans)
SCI Name: Prionops retzii nigricans
nigricans
L. nigricans, nigricantis  blackish, swarthy  < nigrare  to be black  < niger  black.
● ex “Suirirí chorrendo” of de Azara 1802-1805, no. 182 (syn. Hymenops perspicillata).
● ex “Ypacahá obscuro” of de Azara 1802-1805, no. 371 (Pardirallus).
● ex “Brunoir” of Levaillant 1802, pl. 106, fig. 1 (Pycnonotus).
● ex “Tachurí obscurito menor” of de Azara 1802-1805, no. 167 (Ridgwayornis).

Retz's Helmetshrike (retzii)
SCI Name: Prionops retzii retzii
retzii
Prof. Anders Adolf Retzius (1796-1860) Swedish comparative anatomist, anthropologist (Prionops).