MYIADESTINZ. 417 
Smith-|Collec-) Sex When 
sonian| tor’s | and Locality. Received from Collected by 
NS: No. | Age. y Collected. 
38,015 | 446 3 | Fort Crook, Cal. April, 1860.| John Feilner. | ...... 
25,383 | 194 o | Fort Tejon, Cal. 1857. John Xantus, | wale Neca 
8,275 ae do | Colorado Desert. Stic Lt. Williamson. | Dr. Heermann. 
8,274 bs ay 8k 4“ “ 
11,528 = g Fort Yuma, Ar. wae Lt. Ives. H. B. Mollhausen, 
26,462 |3,248 oO Cape St. Lucas, Oct..10, °59:.|, John: Xantus, § |; | cease 
26,463 |3,123 d ‘(San Nicholas). se a ia teeta Ns were on e.c 
3,964 Sis .- | Coahuila, Mex. 1853. Lt Coueh.y )\'<*~4) Sos eeat 
85,132 | 173 .. | Mirador, Mex. (Pine| June, 1864. | Dr. C. Sartorius. | _—...... 
35,133 | 173 as "| Mg AB da atvevere [region.) Ora ee eM nore er aee Se ocinS 
(26,463.) Iris fire red. 
Supramity MYIADESTIN A. 
As explained on page 408, I am decidedly of opinion that, notwith- 
standing a close resemblance in general appearance, Myiadestes 
and C%ichlopsis should be removed from their usual association 
with Ptilogonys, among Ampelidex, to or at least very near the 
Turdide, and form a subfamily with Platycichla (p. 32). The 
latter genus is so closely related to Cichlopsis as almost to be the 
same: Platycichla forming the link with Turdinz through Pla- 
nesticus, while such species as Myiadestes unicolor show the affini- 
ties of Cichlopsis to Myitadestes. 
In the‘original description of Cichlopsis, Cabanis gives scutellate 
tarsi as a character. In the specimen before me of C. lewcogonys, 
belonging to Dr. Sclater, one tarsus is entirely smooth, except the 
one or two divisions at lower end (as usual in Turdidex), while the 
other exhibits a faint indication of an additional division. Through 
the somewhat transparent epidermis may be seen faint transverse 
lines which may represent such division, but do not come to the 
surface, and are precisely such as occur among other booted forms. 
This tendency to occasional abnormal scutellation is a partial 
monstrosity, or it may be a condition of immaturity, as I have 
observed in Myiadestes townsendit. 
The genera of Myiadestine may be characterized as follows, 
although I cannot make the diagnoses very trenchant, and must 
refer to the more elaborate descriptions and comparisons,for com- 
plete details :— 
Myiadestes. Occipital feathers full and soft. Plumage rather loose. Bill 
weak, much depressed. Commissure nearly straight. Hind toe longer 
than inner lateral. Toes deeply cleft. Closed wing externally with an 
exposed light band across the base of the quills, and another nearer the 
end, separated by a darker one. Tail somewhat graduated on the sides. 
Cichlopsis. Occipital feathers short and close. Plumage more compact. 
Wing without any external marking. Commissure nearly straight. Bill 
27 June, 1366. 
