LARGE-TAILED NIGHTJAR. 
From the examination of one skin from Northern Territory the supposed 
C. m. keatsi (Mathews) seems to us to be the same as yorki,^^ 
I have quoted this to show the lack of series from the mainland of New 
Guinea, especially as regards the distinct faunal divisions of the Arfak Peninsula 
and the North-west Coast. Tire Snow Mountain foothills also show a different 
avifauna to that of British New Guinea when series from these locahties are 
criticised with the same detailed application as is paid to the few specimens from 
the minute Moluccan island groups. 
Then was added : 
Caprimulgus macrurus alholaxatus (Rothschild and Hartert, p. 323). 
Type from Volcano Island-, with which was associated New Britain examples. 
These were separated by means of tail coloration, a somewhat variable feature, 
but which may be used in connection with the general coloration as given above. 
Rothschild and Hartert did not discuss the Indo-Malayan forms, but con- 
firmed Kloss’ note (/6^s, 1918, p. 95) that Oberholser’s usage of names for the 
Malay Peninsula forms was incorrect, but also the doubt of their being two forms ; 
anamesus (Oberholser) being a pure synonym of himaculatus (Peale), the form for 
which Oberholser accepted Peale’s name bearing the name ambiguus (Hartert). 
A difficult point arises in connection with the nomen nudum schlegelii as 
the Opinions indicate that it would become valid when cited in synonymy. 
In what connection it is difficult to decide, but probably the designation by 
Oberholser of Dorey, New Guinea would hold, and the name would be available 
for the form of which we have no series from that locality. It is important 
that rules should be made regulating the acceptance of nomina nuda quoted as 
synonyms, as sometimes the cases are very involved. Often they are simple, 
as in the case decided by the Commission, but more often they resemble the 
present case. 
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