58 NOVITATBS ZOOI.OOIOAE XXV. 1918, 



? 328. Haematopus Balthicns Brehm = Hatmatopus ostralegus ostralegus. 



Haematopus BaUMcus Brehm, Handb. Naiurg. Vog. Dewtschl. p. 562 (1831 — Baltic). 



Probable type : <? ad., Riigen, 20. vii. 1819. Schilling 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. Naturg. Vog. Deutschl. p. 563 (1831 — Breeding in Pom- 

 merania). 



? Type : t? ad., Riigen, 10. vi.^ 1819. ■ Schilling leg. 



330. Hydrochelidon paUescens Brehm = Hydrochelidon nigra nigra. 



Hydrochelidon paUescens Brehm, Isis, 1845, p. 355 (Hungary). 

 Hydrochelidon pallida Brehm, Vogelfang, p. 350 (1855). 



Types : <? ?, Hungary, 1. v. 1840. 



331. Hydrochelidon subleucoptera Brehm = Hydrochelidon. leucoptera. 



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

 nach Europa "). 



This is apparently one of the cases in which Brehm examined specimens 

 from Egypt and merely supposed that his bird would also pccur 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 Berlin 

 Museum. 



332. Sterna risoria Brehm = Gelqchelidon nilotica nilotica. 



Sterna risoria Brehm, Beitr. z. Vojelk. iii. p. 650 (1822 — -Riigen, Schilling coll.). 

 Oelochelidon Balthica, id., Handb. Naturg. Vog. DevtsM. p. 772 (1831 — New name for moria,- Lips 

 bei Riigen). 



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



333. Sterna Schilliugii Brehm = Hydroprogne tschegrava tschegrava. 



Sterna Schillingii Brehm, Beitr. z. Vogelk. iii. p. 641, Taf. 4. (1822 — Discovered 1819 on Riigen bei 

 Schilling). 



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



334. Sylochelidon Balthica Brehm = Hydroprogne tschegrava tschegrava. 

 Sylochelidon Balthica Brehm, Handb. Naturg. Vog. Deutschl. p. 769 (1831 — Baaic). 

 Type : $ ad., Schleswig, May 1819. 



335. Thalasseus Paoli de Wtirttb. [sic) Brehm = Sterna sandvicensis sandvicensis. 

 Thalaseeus Pauli de Wilrltb, Brehm, Vogelfang, p. 346 (1855 — Greece). 



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



