RUEOU S-BRE ASTED SHRIKE-THRUSH. 
the specimens in the British Museum and, noting its relationship with the 
New Guinea megarhynchus, described it as a new species Myiolestes aruensis. 
That genus was in use for these smaller Colluricincloid birds but has since 
been relegated to its type series. In the Museum, Gray had specimens of 
C. rufigaster but they were quite unlike and so were never mentioned. He, 
however, found four birds from Northern Australia which were not unlike 
the Aru Island and New Guinea birds, and he proposed two new species with 
the following descriptions : 
4 4 Myiolestes gouldii n. sp. Allied to M. megarhynchus, but is of a greyish- 
olive, with deep rusty colour on the greater wing-coverts and outer margins 
of quills ; chin white, with a brown line down the shaft of each feather ; a 
small rusty spot behind each eye. This mark points out at once this species 
from the others. Hob. Brown’s River, Australia ; and Barnard Isles. In 
British Museum. 
66 Myiolestes griseatus n. sp. Differs from the others by being decidedly 
greyish-olive on the upper- surface, and by not having any rusty colour on 
the wings ; the under-surface rusty-white, which becomes white on the 
throat. 
“ Hob. Cape York, Australia ; and Dunk’s Island. In British Museum.” 
Through some misunderstanding, at present not determinable, Gould 
did not include either of these in his “ Handbook,” although one had been 
named after him and both were in the British Museum. Through this lapse, 
a few years afterwards, Gould described from Rockingham Bay as a new 
species Colluricincla parvissima. The specific name chosen is, from the view- 
point of philologists, one of the extraordinary curiosities of ornithological 
nomenclature. 
Ramsay in his 1888 “ List ” included C. parvissima with a note : 
“ C. parvissima is a smaller race of G. rufigaster,” but at the end under the 
heading: “Doubtful species noted Myiolestes gouldii and griseatus ”. Why 
they were regarded as doubtful is beyond the understanding of any ordinary 
ornithologist, as the descriptions are excellent, and the types are in existence 
in a verv accessible Museum. 
*/ 
Later, North described Collyriocincla cerviniventris from the Dawson 
River, Queensland, writing : “ This is the inland representative of G. rufi- 
gaster of the coastal brushes, from which it may be distinguished by 
its longer and thinner bill, and by its very much paler upper and under- 
surface,” and noted that G. rufigaster ranged from the Clarence River, New 
South Wales, northward to Cairns, Queensland ; the wing of adult male from 
the former locality measuring 3*9 inches and from the latter from 3*8 to 3*9 
inches”. C. parvissima he regarded as a decidedly smaller race with a wing 
VOL. X. 
313 
