LESSER CRESTED TERN. ^ 
Thalasseus hengalensis arahicus, subsp. n. ; Red Sea. 
Lighter an^ smaller than birds from the type-locality ; Sterna affinis 
Cretzschmar and Th. 7naxuriensis Lichtenstein (nude name) are synonyms. 
Thalasseus hengalensis torresii Gould ; North Australia. 
Thalasseus hengalensis zhmnermanni (Reichenow) ; Kiaoutschou. 
I have not seen specimens from this locality, but the description here 
reproduced leaves no doubt as to the status of the form : “ Sterna ziimnermanni 
Reichenow, Ornith. Monatsh., Vol. XI., p. 82, 1903, ^ in Sommerkleide. Der 
St. media Horsf. sehr ahnlich, aber oberseits viel blasser, zart silbergrau, 
Schnabel orangegelb mit schwarzer spitze, Fliigel langer. Lg etwa 430, E1.315- 
320 : Schw 170, Schn 55. L. 27 m.” 
The wing-measurement of Indian specimens runs as large as this, but it is 
quite possible that Reichenow used Red Sea or Persian Gulf birds, in which 
case his diagnosis would be quite accurate. The largest Red Sea specimen 
only runs to 313 mm. in the wing. 
355 
