Birds of St. Thomas' Island. 95 



2. *Onoliis crassirostris. 



Oriolus crassirostris Hartl, ; Salvadori, Orn. Golfo d. 

 Guinea^ ii. 1903, p. 30 ; Bocage, Jorn. Sci. Lisboa, 1905, 

 p. 77; Shelley, Birds of Africa, v. 1906, p. 21, pi. xliii. 



«. ?Imm. (No. 23). Lake Amelia. 23.i.09. 



b-e. S S S ^ ad. (Nos. 18, 21, 22, 20). Lake Amelia. 

 24 i. 09. 



/. c? ad. (No. 19). Lake Amelia. 25.i.09. 



Iris red, bill pale claret-red. 



A very good plate of this Oi'iole is given by Shelley in 

 which both the adult and immature birds are figured. 



In the series obtaiued by Alexander an apparently adult 

 female differs from the male only in having the upper part 

 of the breast and throat greyish, mottled with black and 

 white on the upper part of the throat and chin. In the male 

 these parts are uniform black, and in the immature bird 

 white. 



All the specimens enumerated agree exactly with Shelley's 

 plate, with the exception of No. 19. This example is remark- 

 able, as it resembles the fully adult male in plumage, but 

 has a wide yellowish-grey patch on the crown of the head, 

 extending from the base of the bill to the hind part of the 

 crown, a distance of 26 mm. The rest of the head and 

 neck is black. 



The Stout-billed Black-headed Oriole is confined to St. 

 Thomas, where it is stated by both Bocage and Fea to be 

 very abundant throughout the island. 



Alexander found it in the forests of the higher altitudes. 

 He remarks that its note is a clear double whistle, and that 

 it was breeding at the time of his visit. 



3. "^ Vidua principalis. 



Vidua principalis (Linn.) ; Salvadori, Orn. Golfo d. 

 Guinea, ii. 1903, p. 29 ; Bocage, Jorn. Sci. Lisboa^ 1905, 

 p. 82. 



Vidua Serena Linn. ; Shelley, Birds of Africa, iv. 1905, 

 p. 16. 



