VoI i907 IV ] Recent Literature. 359 



The list is interesting from several points of view; as the period of obser- 

 vation included the most important portion of the fall migration, it is 

 not surprising to note that many of the summer residents and early mi- 

 grants were met with only during the first part of the journey, and the 

 later migrants only toward its close. Only 13 individuals are recorded 

 for the whole family Tyrannidae, of which six are Phcebes and three are 

 Kingbirds — two of the latter for the last three days of August, and the 

 other for October 12-17! A Rough-legged Hawk is entered as seen the 

 last of August; only one Chipping Sparrow is recorded, for the period 

 Sept. 17-21; also one each for the Red-eyed, Philadelphia and Solitary 

 Vireos, one Yellowthroat and one Mockingbird. The Song, Swamp and 

 Lincoln's Sparrows were not noted till October. There is brief reference 

 to a later trip made by the same observers, from Cairo twelve and a half 

 miles northward, with very different results as to the prevailing species 

 represented, while the number of individual birds to the square mile 

 showed an increase of from 874 to 5882. 



Says the author: "Definite conclusions of permanent value concerning 

 the numbers and significance of the bird life of the State evidently cannot 

 be drawn until many such pictures as these have been assembled, compared, 

 and adjusted in their right relations; and it has been the principal object 

 of this paper to describe and illustrate one process, at least, by which the 

 materials necessary to a correct general view of the ornithological ecology 

 of the State may be brought together and made available." — J. A. A. 



Bangs on the Wood Rails. — Only the species occurring north of Panama ' 

 are here treated, namely Aramides axillaris, A. cajanea, A. albiventris, A. 

 a. mexicanus, and A. a. plumbeicollis. Following a 'key' to the five forms, 

 each is described in detail, including tables of measurements, with a dis- 

 cussion of its relationships and geographical distribution. A. a. mexicanus 

 is here first described, it differing from true albiventris in darker colors 

 throughout. — J. A. A. 



Berlepsch on New Neotropical Birds. 2 — Of the thirty 'new' forms here 

 described (17 species and 13 subspecies), seven had previously been named 

 and briefly described in Vol. XVI of the Bulletin B. O. C, in May, 1906. 

 Idioptilon is a new genus of Tyrannidse (type, /. rothschildi sp. nov.), 

 and a third of the new species and subspecies belong also to this family. 

 About half of these new forms are from Argentina and Bolivia, and the 

 others mostly from Brazil, Ecuador, and Colombia. — J. A. A. 



1 On the Wood Rails, Genus Aramides, occurring North of Panama. By Outram 

 Bangs. American Naturalist, Vol. XLI, March, 1907, pp. 177-187. 



2 Descriptions of New Species and Subspecies of Neotropical Birds. By Hans 

 Graf von Berlepsch. Proc. IVth Internal. Orn. Congress, 1905 (1906), pp. 347- 

 371. 



