68 NOVITATES ZOOLOGICAE XXV. 1918. 



? 328. Haematopus Balthicus Brehm = Haematopus ostralegus ostralegus. 



Haematopus Balthicus Brohm, Handb. Naturg. Vo]. DeiUschl. p. 562 (IS31 — Baltic). 



Probable type: S ad., Riigen, 20. vii. 1819. SchUling leg. This speci- 

 men is figured by Keulemans in the New Naumann, viii. pi. ix. 



Brehm separated his balthicus chiefly because it had one remex less than 

 H. ostralegus. In old specimens — not always quite complete — it is almost 

 impossible to be certain if the number of remiges is complete. 



? 329. Haematopus orientalis Brehm = Haematopus ostralegus ostralegus. 



Haematopus orientalis Brehm, Handb. Xatvr.j. Vog. Deulschl. \>. .103 (1831 — Breeding in Pom- 

 merania). 



IType: ,J ad., Riigen, 10. vi. 1819. Schilling leg. 



330. Hydrochelidon pallescens Brehm = H ydrochelidon nigra nigra. 



Hydrochelidon pallescens Bream, Isis, 1S45. p. 355 (Hungary). 

 Hydrochelidon pallida Brehm, Vogelfang, p. 3.50 (1S55). 



Types : <J $, Hungary, 1. v. 1840. 



331. Hydrochelidon subleucoptera Brehm = Hydrochelidmi leucoptera. 



Hydrochelidon subleucoptera Brehm, Vogelfang, p. 350 (1855 — " Kommt aus Nordostafrika selteii 

 nach Europa "). 



This is apparently one of the cases in which Brehm exa:nined specimens 

 from Egypt and merely supposed that his bu-d would also occur in Europe. In 

 many cases his surmise was correct, especially when he separated a new form 

 without valid reasons ; but he should not have published his surmise as a fact. 



Type : " ? annua," Egypt, May 1822. Probably exchanged from the Berlm 

 Museum. 



332. Sterna risoria Brehm = Gelochelidon nilotica nilotica. 



Sterna risoria Brelim, Beitr. z. Yogelk. iii. p. 650 (1822 — Riigen, Schilling coll.). 

 Gelnchelidon Balthica, id., Handb. Naturg. Vog. Devtschl. p. 772 (1S31— New name for risoria. Lips 

 bei Riigen). 



Types : <J ?, pair. Lips near Riigen, 8. vi. 1819. Schilling leg. 

 333. Stema SchUlingii Brelim = Hydroprogne tschegrava tschegrava. 



Sterna SchUlingii Brehm, Beitr. z. Vogelk. iii. p. 041, Taf. 4. (1822— Discovered 1819 on Rugen bei 

 Schilling). 

 Type : $ ad. Hiddensoe near Riigen, 11. viii. 1819. Schilling leg. 



334. Sylochelidon Ealthica Brehm = Hydroprogne tschegrava tschegrava. 



Sylochelidon Balthica Brelmi, Handb. Naturg. Vog. Devtschl. p. 769 (1831— Baiiic). 

 Type : ? ad., Sohleswig, May 1819. 



335. Thalasseus Pauli de Wurttb. (sic) Brehm = Sterna sandvicensis sandvicensis . 



Thalaaeeus Pauli dp W'iirttb. Brehm, Vogelfang, p. 34C> {IS5B — Greece). 



Type : ? ad., Greece, November 1845. A. Lindermayer leg. 



