75 Aves. Systematic. — Sphentsoiformes — Prooellariiformes. 
5831 
f Argyrodyptes gen. n., A. microtar- 
8us sp. n., Seymour island, Patagonia, 
Ameghino, An. Mus., Buenos Aires, 6, 
(121-123). 
Arthrodytes gen. n., type A. grandis, 
Ameghino, T.c., (143-144). 
Catarrhactes chrysolophus in the 
South Orkney Islands, Clarke, Ibis, 
1906, (164-166). 
| Delphinornia gen. n., Seymour 
Island, Antarctic Seas, Wvman, Wiss. 
Ergebn. Sell wed. Sudpolar-Exped., 3. 
| Eospheniseus gen. n.,. Seymour 
Island, Antarctic Seas, Wyman, Wiss. 
Ergebn. Sell wed. Sud-polar-Exped., 3. 
Eudyptula minor, downy plumage, 
McClymont, Emu, 5, (162). 
| Icthyopteryx , gen. n., type. Sey- 
mour Island, Antarctic Seas, Wyman, 
Wiss. Ergebn. Schwed. Siidpolar-fixped., 
3. 
Isotremornis gen. n., type I. nov- 
denskjoldi sp. n. Seymour Island, Ame- 
ghino, An. Mus., Buenos . Aires, 6, (134- 
138). 
t Metancylornis gen. n., type M. curbus 
(Amegh), Ameghino, An. Mus., Buenos 
Aires, ser. 3, 6, (129). 
\Neculus gen. n., N. rothi sp. n., 
Seymour island, Patagonia, Ameghino, 
An. Mus., Buenes Aires, 3 ser., 6, (127— 
128). 
f Palaeoapterodytes nom. nov. pro 
Apberodytes, Ameghino (nec Scop.), id. 
T.c. (120). 
'\Palaeospheniscus inlerruptus sp. n., 
Seymour island, Ameghino, An. Mus., 
Buenos Aires, 3 ser., 6, (104). — P. me- 
dianus , P. planus, P. rothi, P. inter- 
medins, P. aflinis spp. n., id. T.c. (108- 
114). 
f Paraspheniscus gen. n., type P. hergi 
(Moreno and Mercerat), Ameghino, An. 
Mus., Buenos Aires, 3 ser., 6, (115). 
\Perispheniscus gen. n., type P. 
wimani sp. n., Seymour island, Pata- 
gonia, Ameghino, An. Mus., Buenos 
Aires, 3 ser., 6, (117-120). 
^Pseudospheniscus gen. n. f type P. 
interplanus sp. n., Seymour island, Pata- 
gonia, Ameghino, An. Mus., Buenos 
Aires, 3 ser., 6, (123-124). — P. concavus 
sp. n., l.c. id. T.c. (124-125). 
Pygoscelis antarctica, adelw, papua, 
breeding in the South Orkney Islands, 
nesting habits described, Clarke, Ibis, 
London, 1906, (152-164, pis. iv-ix). 
Trcleudytes, gen. n.., type T. crassa 
sp. n., Seymour Island, Ameghino, An. 
Mus., Buenos Aires, 6, (156-158). 
ORDER PROOELLARIIFORMES. 
Daption eapensis, nesting in the 
South Orkney Islands, Eagle Clarke, 
Ibis, 1906, (174-177, pi. x, fig. 1). 
Diomedea platei, Reioiienovv, Ornith. 
Monatsber., 14, (51). — D. immutabilis in 
Laysan, Boyer, Nature, Paris, 34, (387- 
389). 
Fregetta melanogasler nesting on the 
South Orkney Islands, Clarke, Ibis, 
1906, (168, 169). 
Fidmarus glacialis, nesting, Harvie- 
Brown, Ann. Scot. Nat. Hist., 1906, 
(239, 240) ; at Whalsay and Yell, Shet- 
land, Tullocii, T.c. (240) ; on the coast 
of Normandy, Magaud d’Aubusson, 
Naturalists, Paris, 28, (7-8). 
Oeeanites oceanicus, nesting in the 
South Orkney Islands, Clarke, Ibis, 
1906, (166-168, pi. x, fig. 2). 
Occanodroma leucorrhoa in Massachu- 
setts, Thayer, Auk, Cambridge, Mass., 
23, (97) ; in Co. Fermanagh, Lang- 
ham, Irish Nat., 15, (45) ; in Mecklen- 
burg, Held, Ornith. Monatschr., Gera, 
31, (180-182). — O. castro in Kent, 
Tioehurst, Bull. Brit. Ornith. Cl., 19, 
(20). — 0. beali Alaska, O. beldingi 
Oregon, Emerson, (54), Condor, 8 ; 
spp. n. 
Ossifraga gigantea, nesting on the 
South Orkney Islands, Clarke, Ibis, 
1906, (172, 173, pi. xi, fig. 2). 
Ostrelata wilsoni, Sharpe, — O. armin- 
joniana , Gigl. and Salvad, Nicoll, Ibis, 
London, 1906, (671, 672). — O. armin- 
joniana, O.vnlsoni and 0. trinitatis, Notes, 
Nicoll, Bull. Brit. Ornith. Cl., 16, (102, 
103). 
Pogodroma nivea nesting on the South 
Orkney Islands, Clarke, Ibis, 1906, 
(170-172, pi. iii, fig. 1, pi. xi, fig. 1). 
Pelecanoides dacunhce sp. n. Tristan 
da Cunha. Nicoll, Bull. Brit. Ornith. 
Club, 16, (103). 
