650 



BIRDS OF THE GALAPAGOS ARCHIPELAGO— RIDGWAY. volxix. 



l..'><», from anterior end of same 0.02-1), and nasal tubes lonoer (0.33- | 

 0.3S); hind neck and sides of neck bla<'k, like top of head; feathers of 

 back and scapulars (especially the latter) with distinct narrow o-rayisli 

 white tips; inner webs of ])rimaries with an extensive definite si)ace of 

 white, occupying- (except on the first) at least the basal half. 



It may be, of course, that a larger series, especially of the Sandwich 

 Island bird, would show that these differences are inconstant; but 

 until this has been demonstrated it seems best to regard A.^^oulwich- 

 ensis as distinct, or at least to relegate it doubtfully to the synonymy j 

 of A. plucopyiiia. 



Measurements of Aestrelafa phaiopytjia. 



Sex anil age. 



Adalt female - . . i Between James and Indefati- 

 gable islands. 



Adult male do 



Adult female do 



Uo do 



Adult male Between Indefatigable and Bar- 



rington islands. 



Adult female . . <lo 



A verage 



l^ate. 



,S^ ^^ 





Aug.21. 1891 11.50 5.471.30 0.90. 65 1.43 1.75 



Aug. 22. 1891 12.25 5.011.31 .98.69 1 40 1 73 



do 11.75 5.02 1.36100.55 155 176 



do 11. 56 5. 381.30! .95.70 1.41 1.70 



July 11. 1891 12.00 5.421.351.00.58 1.47 1. 78 



do 11.75 5. 30 1.30 1.00 58 1.48 172 



11.80 5.271.32 .97.62+ 1.46 1.74 



Mtasnrements of ti/pe of Aestrclatti sandivichcnsis. 



Wing.i Tail. 



Cul , I\?I't'' 

 "'-• ^1 ^^-^ 



indwirh I.slands I 11.70 I .5.80 1 22 0.90 0.57 



Tar- 

 .su.s. 



Middle 

 toe. 



Genus PUFFINUS, Brisson. 

 Piiljiuiis, l>i{i>.s()N, ()iii.. \1, 17t>0, p. 131. rypt'. rrocfilldr'Nt piitjiuiis, Ilriiiiiiieli. 



Ranije. — (.'(>.sm()i)olitan (pelagic), (ialapagos Archipelago (one pecu- 

 liar si^ecies). 



PUFFINUS SUBALARIS. Townsend, MS. 



• I'KiJinus itnehrosKfi, 1'ki,/,. ?" (uec Pki.zkl.n ), Tuwnsk.nh, Troo. l'. S. Xat. Mus., 

 XIII, 18!)0, p. 112 (Chatham Islaiid, Galapagos Archipehigo; ; Hull. Mus. 

 Comp. Zool., X.\ VII, IS!!."), p. V2G (Chatliam ami Weiiman islands). 



J'ujjiiiits obaciiriiH, (iiec ProceUaria o/>.v(»i7(, Gmelin?), S.xi.vix, Proc. Zool. Soc, 

 1X88, ]>. 431 (Charles Island, Calapajios^. 



