SAGENOPTERIS 133 
V. 2272. PI. TX, Fig. 4. 
Five leaflets are shown in this specimen, but the middle one 
of the upper three projects beyond the others, and its median 
line lies somewhat across those of the four palmately-placed 
segments. There is a distinct indication of the upper end of the 
leaf-stalk. In some of the leaflets the venation is feebly indicated, 
but in all of them there is an obvious median groove which 
becomes more distinct towards the point of attachment. 
This apparent midrib is not nearly so distinct in V. 2353, Pl. IX. 
Fig. 5, and, indeed, were the latter the only available specimen, 
one would describe the leaflets as without a median vein. The 
midrib seems to be best represented in those specimens where 
there is some carbonaceous material on the surface; it appears as 
a median depression widening towards the base. Cf. Sagenopteris 
rhotfolia, Presl, var. elongata, Braun., and S. rhovfolia, Presl, 
var. pusilla, Braun., as represented by Schenk in his “ Foss. 
Flor. Grenz.,” pl. xii. Ecclesbourne. Rufford Coll. 
V. 2353. Pl. IX. Fig. 5. 
In this leaflet the venation is particularly clear; there is no 
distinct indication of a midrib. Cf. Velenovsky, Joc. ect. pl. i. 
figs. 1-5; also Zigno, Flor. foss. Oolit. vol. i. pl. xxi. fig. 1. 
Ecclesbourne. Rufford Coll. 
V. 2300. Ecclesbourne. Rufford Coll. 
V. 23530. Large leaflets. Cf. Schenk,’ pl. xxxi. fig. 5, and 
Dunker,? pl. ix. fig. 5. 
V. 23534. These leaflets agree in shape and in the form of the 
venation with V. 2358 (Pl. [X. Fig. 5); there is a more distinct 
indication here of a median depression, owing, probably, to the 
fact that carbonaceous matter is present in this specimen. 
V. 2353c. Two leaflets; in the smaller spathulate one very 
good venation. 
V. 2353d. A small leaflet like the two lowest in Fig. 4, Pl. IX. 
(V. 2272). Ecclesbourne. Rufford Coll. 
1 Paleontographica, vol. xix. 
2 Wealdenbildung. 
