42 
macroptera , from which it only differs in being much less in size 
and in having the base of the outer tail-feather brown, that I have 
not considered it necessary to figure it. 
143. Microeca flavigaster . Vol. II. PI. 94. 
Genus Monarcha. 
Several species of this genus occur in the Indian Islands and two 
in Australia. They are insectivorous birds, and procure their food 
by quietly hopping about among the branches of the trees. 
144. Monarcha carinata Vol. II. Pl. 95. 
145. Monarcha trivirgata Yol. II. PI. 96. 
Genus Gerygone. 
Generic characters. 
Bill shorter than the head, swollen, notched at the tip ; commis- 
sure straight ; nostrils basal, lateral, oval ; rictus beset with two or 
three extremely fine and weak bristles ; wings moderately long, first 
quill almost spurious, second long, third, fourth and fifth equal and 
longest ; tail rather short and square ; tarsi entire, slender, mode- 
rately long ; toes extremely short and small, the lateral toes even, 
and united to the middle one nearly to the first joint ; claws much 
curved. 
The term Psilopus was originally proposed by me for this genus, 
but that name having been previously employed, Gerygone was 
substituted for it. 
A group inhabiting every part of Australia, and probably New 
Guinea and Polynesia. Their chief food consists of insects of the 
most diminutive size, such as aphides, gnats and mosquitos. The more 
thickly-billed species may probably feed upon larger insects, and their 
larvae. They mostly frequent the thick umbrageous woods, where 
they dart about for insects under the canopy of the dense foliage, or 
sally forth into the open glade like true Flycatchers. Their nests 
are of a domed form, with the entrance near the top, some species 
protecting the opening by constructing a projection above it like the 
eaves of a house ; the eggs are generally four in number, and spotted 
with red like those of the Maluri and Pari. 
146. Gerygone albogularis, Gould Vol. II. PI. 97. 
Psilopus olivaceus , Gould in Proc. of Zool. Soc., Part V. p. 147, 
Young. 
147. Gerygone fusca, Gould Vol. II. PI. 98. 
148. Gerygone culicivorus, Goidd Vol, II. PI. 99. 
149. Gerygone magnirostris, Gould .... Vol. II. PI. 100. 
150. Gerygone Isevigaster, Gould ..... Vol. II. PI. 101 . 
151. Gerygone chloronotus, Goidd Vol. II. PL 102. 
