50 
open districts studded with bushes and low trees ; the E. albifrons 
is occasionally found on the open plains. 
217. Ephthianura albifrons Vol. III. PL 64. 
218. Ephthianura aurifrons, Gould .... Vol. III. PI. 65. 
219. Ephthianura tricolor, Gould Vol. III. PI. 66. 
Genus Xerophila. 
Generic characters. 
Bill short, semiconical, robust at the base, without any notch at 
the tip ; and provided with a few hairs at the base of the upper 
mandible ; nostrils round and covered by minute feathers ; icings 
moderate in size ; first primary short, the third and fourth the 
longest ; tertiaries broad and somewhat elongated ; tail moderate, 
square and slightly concave ; tarsi robust ; hind-toe strong, anterior 
toes feeble, the exterior longer than the inner one. 
A curious form, of which only one species is known, and the 
situation of which in the natural system is quite undetermined. It 
has many of the actions and manners of the Acanthizce, but its robust 
and gibbose bill precludes its being placed with that group. It is 
mainly terrestrial in its habits and builds a domed nest. 
220. Xerophila leucopsis, Gould Vol. III. PL 67. 
Genus Pyrrhol^emus. 
Generic characters. 
Bill shorter than the head, slightly compressed at the sides, with 
a very minute notch at the tip, and beset with a few hairs at the 
base ; nostrils linear and covered with an operculum ; wings short, 
round, first primary rather short, the third the longest ; tail short, 
round and concave, tarsi moderate ; external toe longer than the 
inner one. 
Another anomalous form, the structure of which does not ap- 
proximate very nearly to that of any other genus, but is perhaps 
most nearly allied to Acanthiza. The only species known frequents 
scrubby places and thick underwood ; is much on the ground, but 
occasionally mounts on a twig to sing. 
221. Pyrrholeemus brunneus, Gould .... Vol. III. PL 68. 
Genus Origma. 
Bill nearly as long as the head, incurved, carinated, indented near 
the tip ; nostrils oval, lateral, basal, and covered by an operculum ; 
wings moderate, rounded, first quill short, fourth, fifth, sixth and 
seventh nearly equal and longest ; tail moderate and slightly rounded; 
tarsi moderate ; toes rather short, the outer toe much longer than 
the inner ; plumage dense. 
We are here again presented with another form, the structure, 
habits, and manners of which are all equally singular. The only 
species yet discovered inhabits New South Wales, where it frequents 
stony gullies and rocky situations in the neighbourhood of caverns, 
