•544 Annals of the Carnegie Museum. 



allied. The vinaceous color of the under parts is about the same as 

 in that form, while the color of the bill (judging from the dried skin) 

 would seem to be also about the same. Females are even browner 

 than males, especially below, and while occasional specimens of 

 C. p. socorro'ensis and C. p. neglecta are very much alike, the average 

 difference is very conspicuous. With C. p. pallescens, its nearest 

 mainland representative, the present form requires no comparison, 

 being very different indeed. 



Colonel A. J. Grayson, who was the first ornithologist to visit this 

 out-of-the-way island, brought back a few specimens of this form, 

 which were referred to C. p. pallescens at the time. In 1887 Mr. 

 Ridgway distinguished them as a different subspecies, and additional 

 specimens have been secured in more recent years by Messrs. Town- 

 send and Anthony. The doubtful assignment of the Tres Marias 

 bird to this form, as given in the original description, seems to have 

 been based on a female example (Xo. 58,303) in the U. S. National 

 Museum, collected by Grayson, ostensibly on the Tres Marias Islands. 

 It is quite possible that the locality is an error, as the labels may have 

 become mixed, Grayson having collected at both places. However, 

 there can be no doubt as to the identity of this particular specimen, as 

 it agrees perfectly with Socorro Island females, but the form regularly 

 found on the Tres Marias Islands, as elsewhere shown, is C. p. palles- 

 cens. Another specimen (Xo. 26,990, Collection U. S. Xational 

 Museum) from Mazatlan, probably collected by Grayson also, 

 although not so marked, I would refer to this form on account of its 

 dark colors and brownish flanks, although above it more closely 

 resembles C. p. neglecta. Possibly this individual is also wrongly 

 labeled. At most the present form can be regarded only as a mere 

 straggler to the Tres Marias Islands and adjacent mainland. 



Chaemepelia passerina parvula subsp. nov. 



Columbigallina passerina (not Columba passerina Linnaeus) Robinson, Flying Trip 

 to the Tropics, 1895, 154, part (Honda and Guaduas, Colombia). 



Type, Xo. 128,195, Collection U. S. Xational Museum, adult male; 

 Honda, Colombia, July 14, 1892; Wirt Robinson. 



Snbspecific characters. — Smallest of the C. passerina group, and 

 general coloration very dark. The male is fully as richly colored above 

 and below as C. p. socorro'ensis, but may be readily distinguished by 

 its decidedly smaller size. The female is slightly paler above than 



