Scientia Sinica

EXPLANATION OF PLATE I

All the illustrations are photographs by Mr. L. 'H. Liu, reproduced without any retouch. If not otherwise stated, the figures are in natural size. All the specimens are kept in the Institute of Palzontology, Academia Sinica.

Figs. 1-3. Lepidodendropsis hirmeri Lutz.

Fig. la. The greater part of the same specimen shown in Fig. 1. X 3. Fig. 2a. The greater part of the same specimen shown in Fig. 2, X 4.

Fig. 3a. The greater part of the same specimen shown in Fig, 3, X 3, showing the crowded, almost contiguous and verticillately arranged leaf-cushions and the narrow, linear and almost filiform leaves (on the margin). :

Formation and Locality: The Wutung Series of Lungt’an, near Nanking. The specimens have been found in close association with fossil fishes of the Borhriolepis type. The two forms are often preserved on the same slabs.

Fig. 4. Sublepidodendron wusihense (Sze) Sze n. comb.

Impression of a stem-fragment showing the rather distantly and spirally arranged leaf-cushions. Formation and Locality: The Wutung Series of Wusih District, Kiangsu.