Australian Birds in the Collection of the Linnean Society. 199 
plum: complures, pogonio externo fascia lata subterminali 
præditæ, fulvo alboque punctulatæ, alas tæniis latis dua- 
bus exornant. Remigum primarum pogonia interna fasciis 
obscurioribus, externa fasciis albis insignioribus notata. 
Cauda fusco cinereoque variegata, fasciis saturatis nigri- 
cantibus instructa. Partes inferiores sordido-fulvo cinereo 
albidoque variegatæ ; strigis nigris colli insignioribus un- 
dulatis; abdominis strigis nigris fasciisque fulvis transver- 
sim confluentibus. Femora plumis nigricantibus vestita. 
Tarsi colore corneo imbuti. Rictus dilatatione rictui Pod. 
Stanleyani vix equalis. rides flavi. Longitudo corpo- 
ris, 20; ale a carpo ad remigem quartam, 12; caude, 83 ; 
rostri ad frontem, 11, ad rictum, 21; tarsi, li. 
Cold River Goatsucker? Lath. Gen. Hist, vii. p. 369. no. 39. 
The birds of this genus in the Society's collection bear such : 
a general resemblance to each other, that we have felt some 
hesitation in describing them as different species. The careful 
examination of many individuals in their own country will alone 
determine with certainty whether they are distinct, or merely 
varieties of the same species from age or sex. With respect to the 
two foregoing species we have to observe that Dr. Latham, by 
the examination of other subjects, has been led to the same result 
as we have been by the comparison of the specimens in our 
collection; and has described these birds respectively as the 
Wedge-tailed and Cold River Goatsuckers. The chief differences: 
between them are as follows: The Pod. Stanleyanus is some- 
what larger than the Pod. humeralis ; the colour of its plumage 
is more purely cinereous and brown, being almost without any 
- mixture of tawny ; the external marks are more delicate, and the 
gape of the bill is wider. The Pod. humeralis is distinguished 
by bold black longitudinal streaks, some of which are of con- 
siderable 
