Chatham Islands Shag

Here the details of the Chatham Islands Shag named bird below:

SCI Name:  Phalacrocorax onslowi
Protonym:  Phalacrocorax onslowi Ibis p.533
Taxonomy:  Suliformes / Phalacrocoracidae / Phalacrocorax
Taxonomy Code:  chisha1
Type Locality:  Chatham Islands.
Author:  Forbes, HO
Publish Year:  1893
IUCN Status:  Critically Endangered

DEFINITIONS

PHALACROCORAX
(Phalacrocoracidae; Ϯ Great Cormorant P. carbo) L. phalacrocorax, phalacrocoracis  cormorant  < Gr. φαλακροκοραξ phalakrokorax,  φαλακροκορακος phalakrokorakos  cormorant  < φαλακρος phalakros  bald-headed  < φαλος phalos  white; ακρος akros  topmost; κοραξ korax, κορακος korakos  raven  < κρωζω krōzō  to croak; "LE CORMORAN  ...  PHALACROCORAX  ...  Juxta maris littora versatur, paludesque frequentat. Modo in rupibus, modo in arboribus excelsis nidificat" (Brisson 1760): based on "Phalacrocorax" and "Corvus aquaticus" of many authors, "Carbo aquaticus" of Gessner 1555, and Linnaeus 1748, "Morfex" of Gessner 1555, Aldrovandus 1599-1603, Jonston 1650-1653, and Charleton 1668, "Nonnullis" of Gessner 1555, Schwenckfeld 1603, and Klein 1750, "Pelecanus subtus albicans" of Linnaeus 1746, "Plancus Corvus" of Klein 1750, and Pelecanus Carbo Linnaeus, 1758; "Phalacrocorax Brisson, Orn., 1, 1760, p. 60. Type, by tautonymy, Phalacrocorax = Pelecanus carbo Linné." (Peters 1931, 1, 85). The Great Cormorant was formerly trained in England to catch fish, but that necessary pastime can now only be seen in the Far East.   
Var. Phalaciocorax, Phalocrocorax, Phalarocorax, Phelacrocorax.   
Synon. Anacarbo, Botaurites, Carbo, Carbonarius, Compsohalieus, Cormoranus, Dilophalieus, Ecmeles, Enygrotheres, Euleucocarbo, Graculus, Graucalus, Gripeus, Gulosus, Halieus, Hydrocorax, Hypoleucus, Leucocarbo, Mesocarbo, Nannopterum, Nesocarbo, Notocarbo, Oligocorax, Pallasicarbo, Paracorax, Pliocarbo, Poikilocarbo, Pseudocarbo, Stictocarbo, Urile, Viguacarbo.
● (syn. Rynchops Ϯ Black Skimmer R. niger) "109. ZWEMMERGANS, in het Latyn Phalacrocorax.  Vogel van Madras met een scheermes-snabel.  PETIVER by RAY. Syn. Av. 194. f. 5." (Moehring 1758).

phalacrocorax
L. phalacrocorax, phalacrocoracis  cormorant  < Gr. φαλακροκοραξ phalakrokorax, φαλακροκορακος phalakrokorakos  cormorant  < φαλακρος phalakros  bald-headed  < φαλος phalos  white; ακρος akros  topmost; κοραξ korax, κορακος korakos  raven  < κρωζω krōzō  to croak.
● ex Phalacrocorax Brisson, 1760 (syn. Phalacrocorax carbo).

onslowi
William Hillier 4^th Earl of Onslow (1853-1911) Gov. of New Zealand 1889-1892, Under Secretary of State for India 1895-1900, Under Secretary of State for the Colonies 1900-1903 (Phalacrocorax).