2C0 PROCEEDINGS OF THE ACADEMY OF [April, 



spodiopygia is still in the United States National Museum, and fairly 

 well preserved. 



The name Hirundo peruviana Forster,^^ based on specimens from 

 Tahiti, seems recently to have been pretty generally ignored or over- 

 looked; but that it in all probability applies to this form, as some 

 authors have indicated, notwithstanding that there is no other record 

 from Tahiti, may easily be seen by examination of the excellent orig- 

 inal description.^- It is, however, unavailable for use in the present 

 case, since it is preoccupied by Hirundo peruviana Gmelin,^^ which is 

 certainly some other bird. The Herse forsteri of Hartlaub ^* is, as he 

 states, a renaming of Forster's Hirundo peruviana, but is antedated 

 by Macropteryx spodiopygius Peale.^ 



CoUocalia francioa inexpeotata Hume. 



Collocalia inexpedata Hume, Stray Feathers, I, 1873, p. 296. 



Chars, subsp. — Similar to CoUocalia francica francica, but larger; 

 upper surface decidedly darker, less brownish, and with more metallic 

 greenish gloss; wings and tail with more metallic bluish and purplish 

 tinge; rump much darker, making its light band less well defined, the 

 feathers with much more distinct blackish shaft lines; lower parts, 

 particularly abdomen and crissum, darker, more uniform, and with 

 more evident dusky shaft lines. 



Wing, 114-124; tail, 50-54; exposed culmen, 4.5-5; tarsus, 9.5-10.5 

 mm. 



Type locality. — Button Island, Andaman Islands. 



Geographical distribution. — Southern Andaman Islands; Nicobar 

 Islands; Pulo Tioman; and both coasts of the southern part of the 

 Malay Peninsula; ? accidental in Amherst, Tenasserim (Hartert). 



This race may be distinguished from Collocalia f. townsendi by some- 

 what larger average size, much darker rump band with blackish shaft 

 lines more conspicuous, and decidedly more deeply colored posterior 

 lower parts, with evident darker shaft lines; from Collocalia f. terrae- 

 reg'mae by much greater size, darker rump band, and more noticeable 

 dark shaft lines on abdomen and crissum. It differs from Collocalia 

 francica spodiopygia in its somewhat greater size, more glossy upper 

 surface, more bluish and purplish metallic sheen on wings and tail, 

 presence of appreciably dusky shaft lines on the posterior lower parts, 



^^ Descript. Anim., 1844, p. 240. 



32 Ihid. 



33 Syst. Nat., I, ii, 1788, p. 1025. 

 3* Journ. f. Ornith., 1854, p. 169. 



35 United States Explor. Exped., VIII, 1848, p. 176, pi. XLIX, fig. 2. 



