. Contributions to the anatomy of birds . ne, nearly a centi-meter long in the Sage Cock, and two or three millimeters wide; thisossicle must be regarded only as a sesamoid, though it is nearly as largeas the patella, and in no way as constituting one of the tarsal bones. It will be remembered that in the first edition of my monographsupon the osteology of Speotyto and Uremophida, the old term of the cal-caneal process was retained for that prominent projection found at thesuperior and hinder end of the bone tarso-metatarsus. It having any-thing to do with the calcaneum or the os calcis in the
. Contributions to the anatomy of birds . ne, nearly a centi-meter long in the Sage Cock, and two or three millimeters wide; thisossicle must be regarded only as a sesamoid, though it is nearly as largeas the patella, and in no way as constituting one of the tarsal bones. It will be remembered that in the first edition of my monographsupon the osteology of Speotyto and Uremophida, the old term of the cal-caneal process was retained for that prominent projection found at thesuperior and hinder end of the bone tarso-metatarsus. It having any-thing to do with the calcaneum or the os calcis in the homologies of theavian tarsus, was stoutly denounced in the first appearance oi my mon-ograph upon the osteology of the North American Tetraonidce. In thesepapers, as well as in my osteology of Lanius ludovicianus excubitorides, itwas given the name of the tendinous process, from the well-known factthat bv one means or another it transmitted the flexor tendons at the 698 GEOLOGICAL SUEVEY OF THE TERRITORIES. be the case among all birds?. back of the tarsus. At the present writing we know of no author whohas very recently added anything to the literature of this subject, bear-ing upon this particular point, and the writer was quite confident thatall he had said in his Grouse paper could be sustained ; for if this processdid not separately ossify in the Tetraonidce, and thus weaken its claimas being a homolonge of one of the tarsal bones, why should this not A few months ago we made a discoverythat again shook our faith in thismatter, and led us to believe thatperhaps this process was moreentitled to the appellation of thecalcaneal than Ave had previouslysupposed. The facts in the caseare these, and we must leave ourreader to draw his own conclu-sions. We have before us thetarso-metatarsus taken from theyoung of two widely-separatedgenera and families. The firstis that of the chick of Pedicecetes,one of our present genera; thesecond is from the young of Gin-clus mexicanus, the A
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectbirds, bookyear1882
