Recently 'published Ornithological Works. 477 
and under tail-coverts. This name is equivalent to Dissoura, 
applied by Dr. Cabanis in 1850 to the Old-World Ciconia 
episcopus, so Dr. Reichenow tells us_, who, however, uses the 
latter name in a subgeneric, and not a generic sense. We 
are somewhat startled by Mr. Ridgway^s statement that 
though Linn8eus'’s definition of his genus Mycteria suits 
the bird usually known as M. a'mericana, L., the Linnsean 
species is Ciconia maguari ! Mr. Ridgway gets over the diflS- 
culty by changing the authorship of the specific name from 
Linnaeus to Gmelin; and, so far as we are concerned, we 
are content to let it be so; but we do not fail to notice a fine 
opening for some one partial to such work to put quite a 
difPerent interpretation upon the matter. 
j 61. Ridgway^s Report of the Ornithology of the United- 
States Geological Exploration of the 40th Parallel. 
[Extract from Vol. IV. of the Geological Exploration of the Fortieth 
Parallel. Clarence King, Geologist in Charge. Part III. Ornithology, 
pp. 307-669.] 
The materials from which this Report was drawn were col¬ 
lected by Mr. Ridgway himself, between June 1867 and 
August 1869, the district investigated lying between Sacra¬ 
mento City, California, and Salt-Lake City, Utah. The intro¬ 
ductory portion of the Report contains careful analyses of the 
bird-population of the several districts explored. The rest 
of it consists of an account of each species, many of the bio¬ 
graphical notes being full of interest. (See J. A. Allen, Bull. 
Nutt. Orn. Club, 1878, p. 81.) 
62. United-States Geographical Surveys West of the 100/A 
Meridian. 
'^[Report upon United-States Geographical Surveys West of the 100th 
Meridian. In charge of Lieut. G. M. Wheeler. Vol. IV. Palseontology. 
By Charles A. White, M.D., and Prof. E. D. Cope.] 
At p. 69 of this Report Prof. Cope gives a further account 
of the remains of the species of bird he described in 1876 as 
Eiatryma gigantea, an Eocene bird of doubtful affinity. At 
p. 287 more details are supplied of Vultur umhrosus, de- 
