carapax

The last four segments, of decreasing breadth, are retractile beneath the carapax, as is also the broad plume that terminates them, and which is formed of three short, transparent, and elegantly ciliated bristles.

Scientific American Supplement, No. 385, May 19, 1883 Various

Then they crawled up a stone partially out of water, the carapax gradually split, and the adults readily issued therefrom -- the head first, then the legs, and finally the abdomen.

Scientific American Supplement, No. 385, May 19, 1883 Various

They found in its mouth the buccal pieces of the Neuroptera, and, under the carapax, five pairs of branchial tufts attached to the segments that are invisible outwardly.

Scientific American Supplement, No. 385, May 19, 1883 Various

Another form of augury was the examination of the marks on the carapax of a tortoise; thus the Martial King in 146 consulted, and found unfavourable, such marks -- this was before attacking the last

Ancient China Simplified Edward Harper Parker 1887

It has a deeply-keeled carapax, beautifully bossed, and a hideous triangular head, having curious, lobed, fleshy appendages, and nostrils prolonged into a tube.

The Andes and the Amazon Across the Continent of South America James Orton 1853