BASILEUTERUS. 
241 
There are, however, so many intermediate grades between the two 
extremes as to render inexpedient any attempt at specific separation. 
Specimens in the collection from many localities throughout the 
United States from Atlantic to Pacific; also— 
Smith- Collec- Sex Witter 
sonian| tor’s , and Locality. Collected Received from Collected by 
No. No. | Age. z 
20,635 474 | .. | Ft. George, H. B. Sept. 3, 60. | C. Drexler. C. Drexler. 
20,636 490 | .. oC May 26, °60. Sora 1-4 | |e aeaeetet nator 
22,303 a -- | Halifax, N.S. Hi W. G. Winton. W. G. Winton. 
27,291 Wl cep | Rts woukon, AEA J. Lockhart. J. Lockhart. 
27,292 | 1,229) .. i. May, 1861. R. Kennicott. R. Kennicott. 
27,290 | 1,208 | .. | La Pierre’s House. not B. R. Ross. J. Flett. 
32,173 | 2,489 | g | Escondida, C. S. L. | Nov. 1859. J. Xantus. J. Xantus. 
32,174 | 6,016 | g& | San Gertrude Mts. | Jan. 1861. < ff 
30,138 6506 | @ | Colima (Sierra Ma- |} April, 1863. ce ss 
32,467 47 | og | Orizaba, Mex. [dre). ee Prof. Sumichrast. | Prof.Sumichrast. 
30,877 96 | .. | Mirador, Mex. Nov. 1862. Dr. Sartorius. Dr. Sartorius. 
32,716 |32,622 | g | Coban, Guat. a80 NiaerrGENIB Sy ES eoSc5 
30,697 299 | .. Duenas, Guat. Os Sallvi ss ORAS) yl eal beer 
33,423 129 af San Jose, C. R. sien Drea AER | ee 
34,655 D0 g | Barranca, C. R. Fy od AGH |) Ma ACE abi Games 
34,656 en sf April 15. Bt tae yee Lies asides cio 
34,697 2 ss April 19. a Leb)! MO Socadk 
Myiodioctes minutus. 
Muscicapa minuta, Witson, Am. Orn. VI, 1812, 62, pl. 1, fig. 5.—Avp. 
Orn. Biog. V, pl. 434, fig. 3.—Is. B. A. I, pl. 67.—Sylvia minuta, 
Boy.— Wilsonia m. Bon. List, 1838. 
Sylvania pumilia, Nurr. Man. I, 1840, 334. 
Hab. Eastern United States. 
This species continues to be unknown to modern ornithologists—no 
specimens being recorded as extant in collections. 
BASILEUTERUS, Casanis. 
BASILEUTERUS, Cab. 
Basileuterus, Cas. Schomburgk’s Reise Br. Guiana, III, 1848, 666. (Type 
Sylvia vermivora, ViEILLOT.) (See antea, page 237.) 
Bill broad at the base and much depressed, but thick; the culmen curved 
Rictal 
gently from the base, the commissure curved for most of its extent. 
bristles variable, but reaching about half way from the nostrils to tip of bill. 
The tail is slightly emarginated, and only a little rounded, the lateral feather 
sometimes rather graduated, the feathers rather narrow. Wing about equal 
to the tail, rounded; 4th quill longest, 1st about equal to the 8th. Toes 
rather shorter than in My/odioctes, the middle without its claw nearly two- 
thirds the tarsus. 
There is a good deal of variation in the size of bill and other 
features, with different species; but the broad decurved bill, nearly 
even narrow tail with the lateral feather more or less graduated, 
wings equal to the tail and much rounded, the Ist quill equal to the 8th 
16 May, 1865. 
