536 PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 



14. Helminthophila celata lutescens, Eidgw. 

 Common. 



15. Dendrcaca aestiva (Gm.). 

 Rare. 



* 16. Dendrcsca vieilloti bryanti, Eidgw. 



(See vol. 4, these proceedings, page 444. — R. R.) 



Common in the shrnbbery around the Bay of La Paz; also seen at 

 Picluilinque Bay and Espiritu Santo Island. It frequented almost ex- 

 clusively the mangroves {Bhizopora marujle), and is probably resident. 



17. Dendrceca auduboni (Towns.). 

 Common. 



18. Siurus naeviUs notabilis Grinuell. ? 

 Rarely seen. 



[I am now inclined to believe that the type specimen of aS^. ncevius 

 notabilis was an unusually large one, especially as regards the bill, since 

 I have not yet met with any other western example of the species which 

 agrees with it in dimensions. The two examples obtained by Mr. Beld- 

 ing are decidedly smaller, but both are females. 1 give below their 

 measurements, as well as those of the type of S. notahilis and two other 

 examples, which I refer provisionally to the same. form. The tj^pe speci- 

 men of notahilis is so very different in proportions from any of the 

 many eastern specimens of S. ncevins which I have examined, that I 

 am not yet prepared to yield its claim to recognition as the represen- 

 tative of a geographical or local race of the species; but whether other 

 western specimens belong to the same form or not, is a question which 

 can only be determined by more abundant material. 



* Mr. Brewster's mp.asuremonts of thi.s specimen {cf. Bull. Nutt.Om. Club, July, 1882, p. 138) are so 

 different That our methods of measurement must vary. The dimensions by Mr. Brewster are as fol- 

 lows: Wing, y.lO; tail, 2.32; culmen, .64 (!) ; tarsus, .85. 



19. Geothlypis macgillivrayi (And.). 

 Rare, on mountain caiions. 



20. Geothlypis trichas (L .). 

 Common. 



