rocky mountain antcatcher. 97 
’^e sole, but sufficient marks of difference between 
pi"' 0 species. 
, 1]( dipper is longer than the common species* 
s ; 1 ^? Ur l n g eight and a half inches. The bill is perfectly 
p„i ! ’ aUf l three quarters of an inch long, blackish, 
"itV * ,eneat h anti 011 the edges. The whole bird, 
Mt °ut any exception, is of a dark grayish slate colour, 
Sll In® base of the plumage somewhat lighter; at the 
Uiiif n ° r or l > lt > s a slight indication of whitish. The 
a nd ° rm ^ eilera l colour is somewhat darker on the head, 
] a shade lighter beneath. The wings are three and 
long, as in the genus; the coverts and 
iiiel' s %htly tipped with dingy whitish; the primaries 
i 0( .|' n,! somewhat to brown. The tail measures one 
4 jj an d a half, and is perfectly even. The feet are of 
p 1 colour, and the nails dusky white : the tarsus is 
eisely one inch long. 
(.jjj ,' Ve could rely on Brehm, four species of this genus 
4t . (l 5 ’ "Inch are all found in the old continent. Two 
<,*** ones, proposed by himself, under the names of 
Ifttt . 4 S!: Ptenl> ionalis and Cinclus melanogaster. The 
o according to him, is a Siberian species, appearing 
in ® s . lona % on the northern coast of European Russia 
dieter, and is, perhaps, a genuine species, easily 
|, U t B Saished from the Cinclus aquaticus, by having 
tp, ] ten . feathers in the tail, whilst all others have 
atiij ', e .’ in addition to its smaller size, darker colour, 
g; lr .| “.'"87 throat; but the former can hardly lie re-' 
Hit R CVPU as a nor ‘ harn variety produced by climate. 
l, ot p . r ?hm is probably quite correct in observing, that 
Us new species are perfectly similar to the old one. 
GENUS XI. — MYIOT11ERA, Bonaparte. 
20. Ml'IOTUEJtA OBSOLETA, BONAPARTE. 
ROCKY MOUNTAIN ANTCATCHER. 
BONAPARTE, PRATE I. FIG. II. 
to ^ Uls l J ''d is one of those beings which seem created 
P u *zle the naturalist, and con vince him that nature 
° L - iv. G 4 
