54 EUDYNAMIS MINIMA. 
NOTE XI. 
EUDYNAMIS MINIMA, 
AN APPARENTLY NEW CUCKOO FROM 
SOUTHWESTERN NEW GUINEA 
BY 
Dr. E. D. VAN OORT. 
Only an adult male of this apparently new form of the 
genus Hudynamis has been collected near Bivak Island, in 
the Noord River, Southwestern New Guinea, at 9 January 
1910 by the members of the last Lorentz-expedition to 
the snowy mountains. (Coll. Lorentz n°. 508). 
The plumage is black, glossed with greenish blue. Iris 
fire-red ; bill dull yellow with blackish base; feet black. The 
dimensions are very small, smaller than those of any of the 
described forms of Hudynamis, even inferior to those of Kudy- 
namis orientalis alberti Rothschild & Hartert of the Solomon 
Islands, which has a length of wing from 180—185 mm. 
(Nov. Zool. XIV, 1907, p. 440). Our specimen measures: 
culmen 23, wing 169, tail 164, tarso-met. 30 mm. 
A specimen, collected by Mr. Lorentz in 1907 at Sabang 
on the Noord River, I identified with Hudynamis rufiventer 
(Lesson), ef. Nova Guinea, IX, livr. 1, 1909, p. 69, but it 
seems to belong to this smaller form, as it is also a small 
bird, though its dimensions are somewhat larger than those 
of the above-named example. It measures: culmen 28, wing 
178, tail 173, tarso-met. 31 mm. 
It is very likely, that the Hudynamis of Western New 
Guinea, which is called hitherto Hudynamis rufiventer (Les- 
son), is to be split into two different forms: a larger one 
(wing more than 185 mm.), the true rujiventer of Lesson, 
inhabiting, as to Dutch New Guinea, the western parts 
and the north coast, and a smaller form (wing less than 
180 mm.), the here described minima, inhabiting the south- 
western parts of Dutch New Guinea. It is a pity that no 
females of the smaller form have been collected. 
I name for the present all the forms of Hudynamis 
binominally, as the relation of the forms to each other 
is as yet not clear to me. 
Leyden Museum, November 1911. 
Notes from the Leyden Museum, Vol. XXXIV. 
