Note 58 — Family CORVIDÆ.—The Crows. (continued 2)

Cyanocitta sumichrasti, Ridgway, Rep. U. S. Geol. Expl. 40th Par. All Mexican Cyanocittas with a whitish superciliary streak, blue edgings to jugular feathers, etc., are to be referred to this strongly marked race. A very conspicuous character of this variety is the strong “hook” to the upper mandible; the tip beyond the notch being much elongated, or unusually “produced.” In the collection is a specimen (60,058 ♀, Mexico, A. Boucard) which we have referred to this race, but which differs in such an important respect from all other specimens of the several races referrible to californica, as extended, that it may belong to a distinct form. Having the precise aspect of sumichrasti in regard to its upper plumage, it lacks, however, any trace of the blue edgings and pectoral collar, the whole lower parts being continuously uninterrupted dull white, purer posteriorly. The appearance is such as to cause a suspicion that it may be a link between sumichrasti and one of the races of ultramarina. It measures: wing, 5.50; tail, 6.00; graduation of tail, .70.