484. Recently published Ornithological Works. 
Phrygilus alaudinus eacelsus (Bolivia alta), Poosyiza hypo- 
chondrica afin (Tucuman), Agriornis lida fortis (Pata- 
gonia orient.), Myiotheretes striaticollis pallidus (Tucuman), 
Ochthxca leucophrys tucumana (Tucuman), O. polionota 
pacifica (Bolivia), Todirostrum hypospodium (Colomb.), 7. 
schulzi (Bras. bor.), Idioptilon* rothschildi (Cayenne), Pogo- 
notriccus venezuelanus (Venezuela), Mecocerculus hellmayri 
(Boliv.), Tyranniscus peterst (Venezuela), Capsiempis leuc- 
ophrys (Colomb.), Cotinga simoni (Colomb. occ. merid.), 
Synallaxis fuscipennis (Boliv.), Siptornis baeri (Argent. occ.) , 
S. sordida ajinis (Tucuman), Thripadectes bricenot (Merida), 
T'. sclateri (Colomb. occ. merid.), Philydor colombianus 
bolivianus (Boliv.), Thamnophilus heterocercus (Boliv.), T. 
dinellii (Tucuman), 7. connectens (Boliv. orient.) , and Notho- 
procta ornata rostrata (Tucuman). 
Cotinga simoni, a southern representative of C. ridgwayr of 
Costa Rica, was discovered by Gustav Hopke at 8S. José 
Dagua, in South-western Colombia. 
55. Berlepsch’s Studies on the Tyrannide. 
[Studien tiber Tyranniden. Von Hans, Graf von Bevlepsch, Proc 
IVth Intern. Orn. Congress, p. 463. | 
It is good news that Graf vy. Berlepsch, as he tells us, has 
taken up the special study of the Tyrannidx, one of the 
most difficult groups of the Neogean Ornis, and is proposing 
to make them the subject of a monograph. No Ornithologist 
knows the Tyrannide better, or has a richer collection of 
them at his command. 
In the present memoir the Count discusses the genera, 
one after the other, nearly as arranged in the 14th volume 
of the ‘ Catalogue of Birds’ (prepared by Sclater in 1888), 
and gives notes on each of them, correcting former errors 
and adding remarks on recently described species. 
Knipolegus aterrimus heterogyna (from Peru) is described as 
2 new subspecies, and two new generic names are proposed— 
Xanthomyias (type Muscicapa virescens Temm.) and Oreomyias 
(type Pogonotriccus plumbeiceps Lawrence). 
* Idioptilon, gen nov. Tyrannidarum. 
