. A dictionary of birds . BoTADRus STELLARis. Ventral ami dorsal aspect. Thf ilaik patches shew the Powder-downs. (After Nitzsch.) (p. 241) evenly dis-posed over the would be, however, ^ It is no more easy to find a plural for the word Pterodes than for Patrocles,Themistocles or many others, but we may be (juite sure that it would not takethis form. Sundevall many years ago {K. Handl. 1836, p. 119) hadFterodides, wliicli is peihaps possible. PTERYLOSIS 745 a fallacy to look on this feature as proof of an archaic conditionin them, since fully-developed embryos of both Struthio
. A dictionary of birds . BoTADRus STELLARis. Ventral ami dorsal aspect. Thf ilaik patches shew the Powder-downs. (After Nitzsch.) (p. 241) evenly dis-posed over the would be, however, ^ It is no more easy to find a plural for the word Pterodes than for Patrocles,Themistocles or many others, but we may be (juite sure that it would not takethis form. Sundevall many years ago {K. Handl. 1836, p. 119) hadFterodides, wliicli is peihaps possible. PTERYLOSIS 745 a fallacy to look on this feature as proof of an archaic conditionin them, since fully-developed embryos of both Struthio and Ai)teryxhave well-defined pterylx. If treated skilfully, Pterylosis is of primetaxonomic importance- in Ornithology, though more in the investi-gation of small than of large groups. Unfortunately it can seldombe described in a few words, and hence it is chiefly or only thoseamong its characters which can be expressed in terse and trimformulae that appeal mostto the mechanical con-structor of classifications.^ The prin
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Keywords: ., bookauthorlyde, bookcentury1800, bookdecade1890, booksubjectbirds
