310 [April, 



SIALIA. 



^ 50. S. occidentals. From October 20th to March 10th abundant, both among 

 the mountains, where they feed on the cedar berries, and along the river, where 

 they make the berries of the miseltoe their food. 



51. S. arctica. Much rarer along the Rio Grande than among the mountains, 

 where they breed. Arrive about the ]0th of February, and remain in the river 

 valley but a fortnight or three weeks; among the mountains some two months, 

 or until one brood is reared, after which they take their departure. Once seen 

 as early as January 29th. 



CINCLUS. 



52. C. Americanus. Very abundant on the Rio Mimbres during the whole 

 winter, from the 10th of October until the 1st of April. Never seen along the 

 Rio Grande, nor any where in the summer. 



ORPHEUS. 



53. O. polyglottus. Quite common, both along the Rio Grande valley and 

 among the mountains, in the summer ; in both situations breeds. 



54. O. montanus. One shot at Fort Webster, January 27th. 



TURDUS. 



55. T. migratoritjs. Abundant on the Mimbres during the fall and winter. 

 Very few seen after May, till October. Very f w ever seen on the Rio Grande, 

 and when seen, only in winter. Their range confined to those parts of the country 

 only where cedars abound. 



56. T. solitarius. A few resident throughout the country. 



57. T. nanus. Very common in April on the Rio Grande, both at Forts Thorn 

 and Fillmore. Probably migrates farther northward. 



ANTHUS. 



58. A. ludovicianus. A few straggling flocks observed every spring and 

 fall, both in high and low ground. 



ALAUDA. 



59. A. occidentals. Found during the spring and winter, chiefly on open 

 plains and elevated ground. Not resident. 



PLECTROPHANES. 



60. P. McCownii, (Lawrence). Very large flocks everywhere, especially 

 about the margins of the Rio Grande from the 10th of October to the last of 

 April. Their habits much resemble those of P. nivalis. Never saw any in full 

 summer plumage, as they do not breed here. 



[Description by George N. Lawrence, Esq. Head before the New York Lyceum of 

 Natural History, 8th Sept., 1851, and published in Proceedings of that Society. 



Upper plumage pale rufous ash ; each feather marked down its centre with 

 brownish black ; a line of greyish white from the bill over to the eye; sides of 

 head brownish ash ; primaries and secondaries dusky ash, greyish white margins ; 

 tertiaries brown; lesser wing coverts with rufous marks ; two central feathers 

 dark brown, pale edgings ; outer tail feathers white, palish brown on outer 

 web, rest while, terminating with dark brown; throat and abdomen greyish 

 white ; upper part of breast and under the wings ash, tinged with pale rufous; 

 bill nearly white, tipped with brown ; legs pale red. Length 5| ; wing 3| ; first 

 and second quills longest and equal.] 



