INTRODUCTION. xly 
Genus Acrocernatus, Nau. 
Of this European and Indian form two species inhabit Australia, where they frequent the reed-beds and the 
dense herbage of marshy situations. 
190. Acrocephalus Australis, Gould , 5 . ; ‘ ‘ Vol. ILI. Pl. 37. 
191. Acrocephalus longirostris, Gould. : ; ; ; ; : ! . é‘ ; Vol. III. Pl. 38. 
Subfamily —— ? 
Genus Hytacoxa, Goudd. 
Bill shorter than the head, compressed ; equally broad and high at the base; culmen gradually declining 
from the base to the tip; slightly notched at the apex; rictus beset with a few fine hairs; nostrils basal, oblong, 
rather large and defended by an operculum ; wings short, round and concave ; first, second and third primaries 
graduated ; the fourth, fifth and sixth equal, and the longest; tail rather long and round ; tarsi moderate in size ; 
toes rather lengthened, the lateral toes equal. 
A genus comprising two species peculiar to the southern parts of the country, one of which enjoys an 
extensive range from South Australia to Moreton Bay; the other has, as yet, only been found im the Great Murray 
Scrub. 
192. Hylacola pyrrhopygia — - : , , : , ; Pr Vol. III. Pl. 39. 
193. Hylacola cauta, Gould. : : : ¢ : : ; . : . : Vol. II]. Pl. 40. 
When I characterized this species in the ‘ Proceedings of the Zoological Society of London,’ I had only seen a 
single example ; I have since received a second, proving the correctness of my view of its being quite distinct from 
the H. pyrrhopygia, a fact disputed by Mr. Strickland, who had stated it to be his opinion that my figures were 
referable to one and the same species, but who upon an examination of the specimens themselves acknowledged he 
Was In error. 
Subfamily —— ? 
Genus Cysticoua, Less. 
However numerous birds of this form may be in Europe, Africa, Asia and the Indian Islands, Australia outvies 
them all in the number of species that frequent its grassy plains. With the exception of Van Diemen’s Land, every 
colony is inhabited by one or more species performing there precisely similar offices to those executed by the 
remaining species in the other parts of the world, 
194, Cysticola magna, Gould . . ; 1 . - Vol. IIT. Pl. 41, 
195. Cysticola exilis . : ; : ; ; Vol. IIL. Pl. 42. 
196. Cysticola lineocapilla, Gould . ; ' . : ‘ - ’ . Vol. III. Pl. 43. 
Vol. III. Pl. 44. 
Vol. IL. Pl. 45. 
197. Cysticola isura, Gould 
198. Cysticola ruficeps, Gould 
Subfamily —— ? 
Genus Sericornis, Gould. 
Generic characters. 
Bill strong, straight, nearly as long as the head, compressed laterally towards and notched at the tip ; nostrils 
Qo 
* : 7? Oya! y d 43 * S tel 7 ¥ ial 
basal, lateral, oval, and covered by an oper culum ; wings moderate, rounded, the first quill very short, the fourth, 
M 
