189 



NOTES ON THE SPECIES IN THE PRECEDING CATALOGUE. 



11. SIALIA MEXICAXA. I have not seen specimens of this 

 species from the lloclv}' Mountains, and do not linow whether they 

 present au}' features of a geographical race different from that found 

 ou the Pacific coast. On tlie eastern base of the Sierra Nevada, I 

 obtained specimens without a trace of brown on the back, and with 

 that of the breast divided into two isolated patches — one ou each 

 side — by a blue "isthmus," connecting the blue of the throat and 

 that of the abdomen. 



16. LOPHOPHAXES IXORXATUS. In this species the difference 

 between Paciflc coast and Rocky Mountain specimens is very marked, 

 the former being much browner than the latter; but there being no 

 difference in proportions, or other respects, the differentiation scarcely 

 amounts to that of a race. 



24. CATHERPi:SMEXICANUS,var. COXSPERSUS Ridgway. See 

 Am. Nat., vol. vii, Xo. 10, Oct., 1873, p. G03. 



57. HESPERIPHONA VESPERTIXA, var. MONTANA Eidgway. 

 See '-Birds of California," I, p. 175. Two specimens from Mr. Charles 

 Donglas, of Waukegan, Illinois, collected at the latter place in the 

 winter of 1873 (January or February), are perfectly typical examples 

 of this southern i-ace, the characteristic features of which are the 

 absence of the white spots on tail feathei's, tail-coverts and primaries, 

 and much narrower yellow frontlet' than in the northern form. In 

 this case we see, as in that of C/injsomitris psaltria, an instance of 

 Increased melanism to the southward. 



64. LOXIA CURVIROSTRA, var. MEXICAXA. Though this is 

 the resident form on the high mountains of Colorado, the var. Ameri- 

 cana no doubt occurs in winter. I obtained the latter in the East 

 Humboldt Mountains in September, and it was then common there. L. 

 leucoptera was also common at the same time, and a beautiful male was 

 seen about the middle of August on that range, leading to the suspi- 

 cion that the species may breed on the higher portions of the Rocky 

 Mountains and justifying the belief that it will at least be found in 

 winter on the mountains of Colorado. 



GG. LEUCOSTICTE TEPHROCOTIS, var. AUSTRALIS Allen. 

 This form was first noticed by Mr. Allen in the " American Xaturalist," 

 and subsequently in the "Bulletin of the Museum of Comparative Zool- 

 ogy," as cited below. Its synonymy and characters are as follows : — 



Leucosticte tephrocotis, var. Australis Allen. 



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