( 109 ) 

 21. Porphyrio melanotus Teinm. 



I'orphi/rin mefaiintii.i Temminck, Man. rl'Oni. ii. p. 7(11 (1820 : Australia). 



ad., 2 jun., South Alligator Hiver, September — October 1902, September li)n3 

 (Nos. 978, 984, 1709). " Iris reddish, legs red." 



The Arn birds, generally united with P. indavotus, seem to form a distinct 

 race with larger frontal shield and brighter bine underside, but onr material is 

 not sufficient at present to form a definite opinion. 



22. Colymbus fluviatilis novaehoUandiae (Stejih.). 



PMViiepunoruelioUaniliiie Stephens, in Shaw's Qfti. Zool. xiii. pt. 1. p. 18(lS'2tj : Australia). 



1 6 ad., Lyon River, 3. iv. 1902 (No. 514). 



f) (J ?, iramat., Soutli Alligator Hiver, November 19U2 (Nos. 917 to 921). 



23. Hydrochelidon hybrida (Pall.). 



SU-riKi hjihrlihi Pallas, Orn. Jimtsn-Axlril. ii. p. :i38 (1811 : S. Volga and Sarpa). 



2 Jc?, (South) Alligator River, C. xi. 19i)2, 23. ix. 1903 (Nos. HIG, 1045). 



24. Gelocholidon nilotica macrotarsa (Gonld). 



ISlenin iiilalicu Gmelin, Sysl. Nul. i. p. CUI'j (1788; ex Hasselquist : Egypt, Of. Nur. ZuuJ. \Wi. 



p. (504.)] 

 Sterna viacrntarsa Gould, P. Z. S. 18.37. p. 2i) (Tasmania). 



2 (?(j, (South) Alligator River, 7. xi. 19i)2, 29. viii. 1903 (Nos. 815, 1700). 

 Australian example.s may easily lie distinguished from European and North 

 African ones by their larger bills, and American ones by tlieir very small beaks. 



2.5. Hydroprogue caspia (Pall.). 



Sliiiia (■((sjiid Pallas, Nm: Ciimm. Petroji. xiv. i. p. t)S2, pi. xxii. fig. 2 (1790). 



2 ?¥, Lewis Island, N.W. Australia, 2S. vi., 2. vii. 190l (Nos. Ii. ISO, ls7). 

 '' Iris and legs Vjlack." 



20. Sterna dougalli gracilis Gould. 



(Cf. AW. Zn„!. 1902, p. 594.) 



5 SS, 4 ? ?, Bedout Island, N.W. Australia, 26 to 28. v. 19ii] (Nos. R. 20 

 to R. 34). 



27. Sterna bergii Licht. 



Steniri hergii Licht., Vfi-^. DoiilL p. 80 (1823 : Cape of Good Hope). 



3 JcJ, 3 ? ?, Redout Island, N.W. Australia, May 1901 (Nos. R. 3.i to R. 40). 

 Many of the well-known eggs were found. 



