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Lipsanocytis traversensis
157
Lipsanocystis traversensis n. sp.
(Plate X, Figs. 1-5, Text Figs. 4, 5, 6)
Greatest length of theca of holotype 22 mm.; greatest width 19 mm., thickness 15 mm. Form and appearance of entire theca shown in Plate, X, shape of individual plates in diagram, Fig. 4.
Fig. 4. Diagram of thecal plates.
Ambulacra prominent, occupying extremely shallow grooves in the thecal plates. Brachioles 14 to each ambulacrum, or 56 to the entire theca. Length unknown.
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| Fig. 5. Sketch of anal side, showing relationship of anal opening to adjacent plates. x 2. | Fig. 6. Diagram showing probable outlines of plates composing rows 4 and 5. Parts covered by ambulacral plates stippled. |
Pectinirhomb on plates 1 and 5 has about 45 dichopores, that on plates 12 and 18 about 42, that on plates 14 and 15 about 50.
Anal pyramid unknown.
Column unknown.
The single specimen, No. 5414, Museum of Geology, Univer-
