...3, elbow bending southeast; on its concave northern side appeared the settlement Vinda la Nzádi... 
Richard F. Burton 「Two Trips to Gorilla Land and the Cataracts of the Congo Volume 2」
...The back fin rises behindthe centre of the back; it is comparatively small, falcate, curvedover the top to a blunt point, and concave behind...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...The spines are flat onthe under-surface and concave on the upper, sharply pointed andbroadest near the root...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...maximus, and has a narrowerand less concave inter-orbital space; the nasals are also broaderposteriorly, and less dilated anteriorly, the upper dental linebeing also shorter...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
..."The concavity of thecheeks in front of the orbit deeply concave...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Nostrils concave, near half the length of the bill, covered by a membrane, opening by a long slit midway between the gape and tip...
William Swainson 「Zoological Illustrations, Volume I」
...26); in others the front shin or tibia is formed like a concave shield or shell (fig...
Edward Saunders 「Wild Bees, Wasps and Ants」
...We shall seehereafter that the disk, so large and seemingly solid in theDiscophoræ, thins out in many of the other Jelly-fishes, and becomesexceedingly concave...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...Theflight is rapid and accompanied by astartling whirr, caused by the quickstrokes of their small, concave, stiff-featheredwings...
Various 「Birds Illustrated by Color Photography [August, 1897]」
...Auriculate: with an ear-like appendage or, in antennae,with the basal joint distended into a concave, plate-like earwhich envelops the rest of the structures...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Fornicate: arched or vaulted: concave within, convexwithout...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Meniscoidal: with one side concave the other convex,like a round segment from a hollow sphere...
John. B. Smith 「Explanation of Terms Used in Entomology」
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