MARCHirriTES. 51 



•n'hioli the determination is based is too fragmentary to admit of 

 accurate identification. 



A more recently described Jurassic Liverwort, Paleohepatiea 

 Rostafinshii,'^ from tbe neigbbourhood of Cracow, differs from tbe 

 Englisb species in tbe broader divisions of tbe tballus and in its 

 generally larger form. 



PL XIX. Fig. 2. 



V. 3652. A repeatedly forked specimen, witb the habit of 

 a dichotomously branched thallose Liverwort, similar to Marohantia 

 and other genera. The impression on the sandstone is not very 

 clearly preserved, but there is a distinct indication of a thicker 

 median portion or broad midrib in each branch of the tballus, 

 and a thinner lateral margin, which appears as a light-brown 

 stain on the sturface of the rock. Gristhorpe Bay. 



Presented by Dr. Murray. 



v. 2536. This specimen is labelled in Bean's writing Ftieoides 

 arcuatus. The lobes of the tballus have a breadth of 3 mm., 

 the midrib being 1 mm. wide. The specimen figm-ed by Liudley 

 and Hutton as Fucoides arcuatus has precisely the same habit 

 of branching, but the drawing suggests a stiffer and less delicate 

 plant. In all probability, however, F. arcuatus is merely an 

 imperfect example of Marchantitei ereetus. 



39.328. Examples with narrower thaUoid branches. On the 

 same piece of shale there is an unusually good specimen of 

 Taniopteris major, L. & H. ; also fragments of Nilssonia compta 

 (Phill.), Tceniopterisvittata,'Bicon^., Qic. Upper Shale: Gristhoi-pe. 



Bean Coll. 



39.329. Several fragments with narrow branches ; labelled by 

 Bean Fucoides ereetus. The present form of the impressions is 

 probably, to a large extent, due to the partial destruction of the 

 delicate lateral portions of the tballus. Upper Shale : Scarborough. 



Bean Coll. 



40,57L An imperfect specimen, labelled Spharococcites arcuatus 

 and Fucoides ereetus. Gristhorpe Bay. Bean Coll. 



» Eaciborski (94), p. 10, pi. vii. figs. 1-3. 



