442 Mr. J. P. Chapiii o)i the Representatives of [Ibi.'?, 



The two adult specimens o£ C. I. leucoyasier that I examined 

 are the type, without sex, from " Fernando Po,'^ in the British 

 Museum, and one labelled $ , collected by A. Schultze at 

 San Carlos, Fei'nando Po, in the Berlin Museum. In the 

 British Museum there is another example, plainly immature, 

 labelled ^ , from Fish Town, Fernando Po, taken by Seimund. 

 In length of wino- (GO mm.) and height of bill (7'G) * it 

 exceeds any mainland bird, but in length of culmen (28), as 

 might be expected, it is surpassed by many of them. 



The comparative measurements in millinietres of adults may 

 be summarized as follows : — 



' The smaller of these two is the tj'pe. 

 t ATera<;es in parenthesis. 



On this basis I need not hesitate to name the mainland form. 

 Corythornis leucogaster batesi subsp. nov. 



Suhspecific characters. — Similar to C. 1. leucogaster (Fraser) 

 of Fernando Po in ])attern and coloration, but smaller, with a 

 slenderer bill. 



Tt/pe. — (J adult, Bitye, southern (jameroou. Oct. .3, l'J13 

 (G. L. Bates), now No. 156061. American Museum Nat. Hist. 

 Measurements : wing 55 ; tail 23 ; exposed culmen o0'5 ; 

 height of bill ;it nostril G'G. 



Specimens exatniited — Cameroon: Bimhia, 1 c? ; 25 miles 

 from Kribi, 1 <? ; Nkonangl, 1 ? : Efulen, ' ^ , 3 $ , 1 ? ? ; 

 Biver Ja, 4 ^ nd., 1 S imni. ; Sakbayenie, 1 ? , Lolodorf, 

 2c?, 2 ? , 1 without sex. 



* At the British Museum bills were measured with sliding calipers 

 provided with a vernier. In other cases fine-pointed dividers were used, 

 and a rule divided in half-millimetres. 



