Birds of St. Thomas' Island. 105 



Alexander found it well distributed over the island. The 

 male when courting the female makes loud wing-beats, like 

 the first patter of heavy rain on foliage, at the same time it 

 will often perform a characteristic flight, a series of ' ups and 

 downs' in the air like a switch-back motion. 



23. *Turdus olivaceofuscus. 



Turdiis olivaceofuscus Hartl. ; Salvador!, Orn, Golfo d. 

 Guinea, ii. 1903, p. 25 ; Bocage, Jorn. Sci. Lisboa, 1905, 

 p. 78. 



a, b. S ^ imm. (Nos. 10, 24). Lake Amelia. 23.i. 09. 



c,d.^^ ad. (Nos. 12, 26). „ „ 24.i.09. 



e. c? imm. (No 25). „ „ 25.i.09. 



The St. Thomas Thrush, which is peculiar to the island, 

 is said by Francisco Newton to be common and universally 

 distributed. 



The figure given of this species in Seebohm's ' Monograph 

 of the Thrushes ' does not convey a correct idea of the bird. 

 The feathers of the throat and belly are white narrowly 

 tipped with pale brown. This has already been pointed out 

 by Count Salvadori. 



24. Amaurocichla bocagei. 



Amaurocic/da bocagei Sbarpe, P. Z. S. 1892, p. 2^7, pi. xx. 

 fig. 1 ; Salvadori, Orn. Golfo d. Guinea, ii. 1903, p. 25 ; 

 Bocage, Jorn. Sci. Lisboa, 1905, p. 79. 



Neither Alexander nor Fea appear to have seen this bird 

 during their visits to the island. 



The type-specimen, which is in the British Museum, was 

 sent for comparison to the late Dr. Sharpe by his friend 

 Barboza du Bocage, who had received it from Francisco 

 Newton. 



Sharpe gives a good figure of the bird and created for 

 it a new genus, Amaurocichla, which he characterised as 

 follows : — " Similar to Crateroscelis, but distinguished by 

 the shape of the wing, the first primary being nearly as 

 long as the second. Additional characters are : The bill is 



