Page:Lipsanocystis traversensis, a New Cystid from the Devonian of Michigan.pdf/5

Rh 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.



Ambulacra prominent, occupying extremely shallow grooves in the thecal plates. Brachioles 14 to each ambulacrum, or 56 to the entire theca. Length unknown.

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,