358 SNODGRASS AND HELLER 



It is more solidly constructed than the last, being composed outwardly 

 of closely woven plant fibers, stems, cotton and egg cocoons of spiders. 

 The interior is deep and lined with fine grass, and feathers of the 

 Galapagos duck (Pcecilonetta}. 



The one egg preserved is much like those of the other set in shape 

 and coloration. It has a creamy ground color and is blotched, 

 mostly in the form of a wreath about the larger end with chestnut, 

 umber and lavender-gray. The specimen measures 17 x 14. 



The notes of this bird are much like those of any other Dendroica. 

 One common song resembled tu-wer, tu-ivee, tu-wee-u, uttered rather 

 rapidly. Another sounded like tul-tivee-tivee-tivee. The first syllable 

 of this was somewhat prolonged and separated from the second by a 

 space greater than that between the others. 



We have eighteen adult specimens of this species from Albemarle, 

 Narboro, James, Seymour, Charles, Chatham, Bindloe and Wenman. 

 We observed it on all the other islands except Jervis which we did not 

 visit. 



Family TROGLODYTIDJE. 



Genus Nesomimus Ridgway. 



Nesomimus RIDGWAY, Proc. U. S. Nat. Mus., xu, p. 102, 1890, footnote. 

 (Type, Orpheus melanotis Gould.) 



Generic Characters. (From Ridgway.) "Similar to Mimus 

 Boie, but bill longer and more compressed basally, and tarsus much 

 longer (nearly twice as long as middle toe instead of only about one 

 third longer)." 



Whether these characters may be considered sufficient for generic 

 distinction or not, the group is certainly a natural one and it is most 

 convenient to recognize it as such by a generic name. 



Nesomimus is peculiar to the Galapagos Archipelago where it has 

 been taken on every island except Duncan. It is now apparently extinct 

 on Charles, but specimens were taken on this island by Darwin. 



76. NESOMIMUS TRIFASCIATUS (Gould). 



Orpheus trifasciatus GOULD, Proc. Zool. Soc. Lond., p. 27, 1837 (Charles 



Island). 

 Mimus trifasciatus GRAY, Zool. Voy. Beagle, in, Birds, p. 62, pi. 16, 1841 



(Charles Island). 

 Nesomimus trifasciatus RIDGWAY, Proc. U. S. Nat. Mus., xix, p. 483, 1896. 



ROTHSCHILD AND HARTERT, Novit. Zool., vi, p. 143, 1899 (Gardner 



Island, near Charles). 



Range. Gardner (near Charles). Extinct on Charles. 



This species was taken on Charles by Darwin, but has not been seen 



