. The structure and classification of birds . tendinous slip. Dacelo hasa muscular pectoralis propatagialis. Sauromarptis Gaudi-chaudi and Sauropatis sanctus are quite similar. There is,in Pelargopsis at least, a tendinous slip from pectoralis both longus and brevis tendons. In Gallalcyon rufa (fig. 93) there is a simplification,only the anterior of the two tendons being present; thepasseriniform slip is barely marked. In Alcedo there is further degeneration ; not only is the passeriniform On CIO there is a paired heemapophyBis in Dacelo. 2 Shupeldt, On the Osteology of Ceryle, J.
. The structure and classification of birds . tendinous slip. Dacelo hasa muscular pectoralis propatagialis. Sauromarptis Gaudi-chaudi and Sauropatis sanctus are quite similar. There is,in Pelargopsis at least, a tendinous slip from pectoralis both longus and brevis tendons. In Gallalcyon rufa (fig. 93) there is a simplification,only the anterior of the two tendons being present; thepasseriniform slip is barely marked. In Alcedo there is further degeneration ; not only is the passeriniform On CIO there is a paired heemapophyBis in Dacelo. 2 Shupeldt, On the Osteology of Ceryle, J. AHat. Phys. xviii. p. 279. ALCEDINES 199 slip absent, but the wristward slip is hardly shown. Thereis a fleshy pectoralis propatagialis joining the longus tendon. In Geryle alcyon the two tensor brevis tendons form abroad diffused tendon, to which is joined, before it gives offthe wristward slip, a peculiar long (hornbill-like) pectorahspropatagialis tendon. In Alcyon Lessoni we have the most simple form oftensor brevis without any Fig. 92.—Teksokes PATAonOF Ceryle alcyon. Fio. 93.—TensobesPatagii op Oallal-cyon rufa. Fig. 94.—TensobUs PataghOP Sauropatis albicilla. In Syma the tensor brevis consists of two tendons, butthe anterior has no wristward slip at all. There is never a biceps slip. The deltoid has a scapularslip. The expansor secundariorum appears sometimes to beabsent. But it is present in Dacelo, Tanysiptera, Syma, andCittura. Dacelo, at any rate, has no humeral slip to theanconcBus. The leg muscle formula is, without exception, AX —. In Dacelo there is but one peroneal, which is the brevis. The deep flexor tendons vary somewhat. In Dacelogigantea the arrangement of these tendons is, as Professor 200 STRUCTURE AND CLASSIFICATION OF BIRDS Gaeeod pointed out, precisely that of Momotus. But inHalcyon vagans the two tendons blend completely beforethe branches to the toes, all arising approximately at thesame level, are given off. The structure of the co
Size: 1915px × 1305px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, booksubjectbirds, bookyear1898
