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Theocorythium trachelium dianae (Haeckel, 1887)

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Shell almost ovate, with two deep strictures. Length of the three joints= 3:6:8, breadth= 3:9:8. Cephalis subspherical, with a slender, pyramidal horn of three times the length. Thorax conical, constricted at the base. Abdomen bottle-shaped. Pores in the thorax irregular, polygonal, in the abdomen subregular, circular, quincuncially disposed.
Dimensions:
Length of the three joints, a 0.03, b 0.06, c 0.08; breadth, a 0.03, b 0.09, c 0.08.
(Haeckel) 1887


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