SIURUS. 147 
The eggs are white, more or less marked, especially round the larger end, with lines, 
dots, and dashes of various shades of umber-brown 2°, 
y 
3. Siurus motacilla.” 
Turdus motacilla, Vieill. Ois. Am. Sept. ii. p. 9, t. 65°. 
Henicocichla motacilla, Cab. J. f. Orn. 1857, p. 240°. 
Siurus motacilia, Coues, Bull. Nutt..Club. ii. p. 33°; B. Col. Vall. i. p. 299*; Sennett, Bull. U.S. 
Geol. Surv. iv. p. 13’. . 
Turdus ludovicianus, Aud. Orn. Biogr. i. p. 99°. 
Siurus ludovicianus, Scl. P. Z. S. 1859, pp. 363, 373°; Scl. & Salv. Ibis, 1860, p. 273°. 
Sciurus ludovicianus, Baird, Rev. Am. B. i. p. 217%; Lawr. Ann. Lye. N. Y. ix. p. 94%; Mem. 
Bost. Soc. N. H. ii. p. 269"; Bull. U. S. Nat. Mus. no. 4,p.15"; Baird, Brew. & Ridgw. 
N. Am. B.i. p. 287**; Gundl. Orn. Cub. p. 68”. 
Henicocichla ludoviciana, Scl. Cat. Am. B. p. 25°; Salv. P. Z. 8. 1870, p. 183". 
Henicocichla major, Cab. Mus. Hein. i. p. 16 ™. 
Similis praecedenti, sed rostro longiore et colore corporis subtus lactescenti-albo nec flavido distinguendus. Long. 
tota 5:4, alee 3-25, caudee 2°1, rostri a rictu 0°75, tarsi 0-9. (Descr. exempl. ex Alotenango, Guatemala. 
Mus. nostr.) 
Hab. Nortn Americal, Eastern States 414, Texas®.—Mexico, Tamaulipas (Couch '*), 
Mazatlan (Grayson '!2), Colima (Xantus! 1), Yuantepec (Deppe, Mus. Berol.), 
Mirador (Sartorius !°), Jalapa 18 (de Oca’), Orizaba (Botteri 1°), Totontepec (Bou- 
card’), Barrio, Santa Efigenia (Suwmichrast}*); GuateMaLa, Retalhuleu, Alotenango”, 
Volcan de Fuego, Coban®, Choctum (0. S. & &. D. G.); Costa Rica, Barranca 
(Carmiol 1); Panama, Bugaba (Arcé !").—Antinies, Cuba ? , Jamaica 1°, &c. 
The application of Vieillot’s name Turdus moticilla has long been a matter of doubt, 
and was always so treated by American writers until 1877, when Dr. Coues ® satisfied 
himself that it was really meant for the bird usually known under Audubon’s title 
Siurus ludovicianus. In taking this course he followed the opinion of Bonaparte and 
Cabanis 2 on this point. 
Siurus motacilla, as it is now the fashion to call this species, has very much the same 
range in our territory as S. noveboracensis, except that it does not penetrate beyond the 
district of Chiriqui, and hence falls short of the extended range of its congener in the 
southern continent. It is nowhere so abundant as that species, though found in places 
of considerable differences of altitude, ranging from 5000 feet to nearly the sea-level. 
In Guatemala we usually found it in the forest in the bed of a dry watercourse or the 
bottom of a ravine, S. noveboracensis seeking rather the more open running streams. 
Our earliest specimens were obtained in August and September; and it probably stays 
in the country until the following April. Its habits closely resemble those of its 
congener; and in the winter season its note is a clear sharp call. Grayson speaks of 
19* 
