1906.] NATURAL SCIENCES OF PHILADELPHIA. 195 



CoUocalia leucophaea (Peale). 



Macropteryx leiicophaeus Feale, United States Explor. Exped., VIII, 1848, p. 



178, pi. XLIX, fig. 3. 

 CoUocalia cinerea Cassin, United States Explor. Exped., Mamm. and Ornith., 



1858, p. 183, pi. XII, fig. 4 (Tahiti Island, Society Islands) {nee Gmelin). 



Chars, sp. — Similar to CoUocalia unicolor unicolor, but larger; upper 

 parts, including wings and tail, more brownish, with less metallic 

 sheen, and less uniform, the pileum somewhat darker, the rump paler, 

 than the back; feathers of the lores with light brownish instead of 

 white bases. 



Wing, 120-127; tail, 56-59; exposed culmen, 4.5-5; tarsus, 9.5-10 

 mm. 



Type locality. — Tahiti Island, Society Islands. 



Geographical distribution. — Tahiti Island, Society Islands, Pacific 

 Ocean. 



This very distinct species is superficially somewhat like CoUocalia 

 fuciphaga clophra from the Seychelles, but lacks the tarsal feathers; 

 is larger, more brownish above, with less metallic gloss; much darker, 

 duller, more uniform on the lower surface; and has brownish in place of 

 white bases to the loral feathers. It is of course still more different 

 from CoUocalia fuciphaga fuciphaga, being much larger, decidedly more 

 brownish, with scarcely any metallic gloss above, and having neither 

 feathers on the tarsi nor white bases to the feathers of the lores. On 

 the Island of Tahiti alone is this species positively known to occur, 

 since all the specimens from the ^larquesas Islands now at hand prove 

 to belong to CoUocalia ocista. All previous records of this species from 

 the Marcjuesas Islands therefore need verification, though of course 

 its occurrence there is by no means improbable. 



Even if the name given to this species by Cassin — CoUocalia cinerea ^^ 

 — were not, as has already been show^n by Dr. Hartert," a mistaken 

 identification of his specimen with the Hirundo cinerea of Gmelin,^^ 

 which is a swallow — Atticora cinerea — it would still not be the tenable 

 name for the present species, since it is ten years posterior to the Ma- 

 cropteryx leucophaeus of Peale,^^ and was based on the same type speci- 

 men which is yet in the U. S. National Museum. 

 CoUocalia thespesia sp. nov. 



Chars, sp. — Similar to CoUocalia francica germani, but the wing 

 slightly, the tail very much longer; upper parts lighter, more brownish; 



" United States Explor. Exped., Mamm. and Ornith., 1858, p. 183, pi. XII, fig. 4. 



" Cat. Birds. Brit. Mus., XVI, 1892, p. 502. 



^^ Syst. Nat., I, ii, 1788, p. 1026. 



2^ United States Explor. Exped., VIII, 1848, p. 178, pi. XLIX, fig. 3. 



