8 



PROCEEDINGS OF THE NATIONAL MUSEUM 



bridge the gap in size between A. n. montserratensis and A. n. nichollsi. 

 Although we have not personally compared them with the holotype, 

 the two specimens from St. Eustatius resemble it in size to such a 

 marked degree that we unhesitatingly refer them to A. n. mont- 

 serratensis, which also may occur on the intervening islands of 

 Nevis and St. Christopher. Thomas (loc. cit.) described A. n. mont- 

 serratensis as lacking a white spot at the base of the wing. This spot is 



1 Holotypes (measurements of A. n. nichollsi and A. n. montserratensis taken by J. E. Hill). 



2 Measurement after Thomas (1891, p. 530). 



3 7926 in AMNH and 7927 in University of Florida collection. 



