Abstract
1. C. eupunctata shows all of the generic characteristics of Calamopitys, as summarized by Scott (11). It has a small pith surrounded by a ring of mesarch primary strands; it has a leaf trace which is single at its origin but divides farther out; it has considerable secondary xylem; the secondary and metaxylem tracheids have multiseriate bordered pits. 2. The characteristics which distinguish it from the other species of this genus have to do almost entirely with the secondary xylem. It seems expedient to classify this species under the genus Calamopitys. Even though the secondary xylem shows marked variations from that of other species of this genus, these are considered as characteristics of specific value rather than of generic value.
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