. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 334 Bulletin Museum of Comparative Zoology, Vol. 148, No. 7 patches. Another example is the yellow loral spot that is present in elaeoprorus, simplex, caucae, comptus, chuguremis, haroni, and nominate rufinucha, all of which, with exception of chugurensis and haroni, are well separated from one another, either by distributional gaps or by the presence of taxa lacking the character. Even melanolaemus and carrikeri, which re- semble one another more than they do any other races are not contiguous or even proxi- mate, bu
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 334 Bulletin Museum of Comparative Zoology, Vol. 148, No. 7 patches. Another example is the yellow loral spot that is present in elaeoprorus, simplex, caucae, comptus, chuguremis, haroni, and nominate rufinucha, all of which, with exception of chugurensis and haroni, are well separated from one another, either by distributional gaps or by the presence of taxa lacking the character. Even melanolaemus and carrikeri, which re- semble one another more than they do any other races are not contiguous or even proxi- mate, but are separated by nominate rufiimcha which is more similar to the northern races. Noteworthy, because it might appear to be a clue to evolutionary relationships, is the fact that A. r. haroni bears a very strong resemblance to A. pallidinucha papallacta. However, I do not think the two are related. The latter is larger and greener, ventrally, with the white of the nape more restricted, and its white feathers edged with black. Atlapetes melanocephalus Range.—Endemic to the Sierra Nevada de Santa Marta, Colombia (Fig. 8) where it occurs in the upper tropical and the sub- tropical zones at altitudes from 600 to 2,400 m. Ualntat.—Reported by Todd and Car- rikcr (1922:525) to occur in "almost all kinds of conditions throughout its range—in the forest, scrub-growth, and even in low bushes in the ; Habits.—In contrast to other members of the genus, A. melanocephalus is stated by Todd and Carriker (1922:525) to be "not at all shy"; they also note that it keeps near to the ground, moves about in pairs, and lays two white eggs in a domed nest low in a bush. No other atlapetes is yet known to build a domed nest and for that reason the observation is suspect. Atlapetes tricolor superspecies The three species comprising this super- species are little-known but they are, mor- phologically, quite similar, except for the. Figure 8. Distribution of A. melanocep
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