| 单词 |
exaspidean |
| 释义 |
exaspidean, a. Zool.|ɛksæˈspɪdiːən|
[f. mod.L. Exaspideæ (C. J. Sundevall Methodi Naturalis Avium Disponendarum Tentamen (1872) I. 57), f. Gr. ἔξω outside + ἀσπίς shield.]
Pertaining to passerine birds that have an anterior series of scutella on the outer side of the tarsus; cf. endaspidean a.
1889in Cent. Dict. 1907R. Ridgway Birds N. & Middle Amer. IV. 328 The several modifications of the tarsal envelope in the present group may be described as follows: 1. Exaspidean.—The anterior envelope (acrotarsium) extends entirely across the outer side of the tarsus and around the posterior side, sometimes meeting the starting point on the posterior portion of the inner side, the two edges usually separated by a narrow strip or groove of smooth or nonscutellate membrane. 1959Van Tyne & Berger Fund. Ornith. ii. 48 Several types of passerine tarsal scutellation have been described... Exaspidean: With anterior, scutellated segment of tarsal sheath extending across the external side of tarsus. |
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