230 ADDENDA TO VOL. I. 



The fragment referred to as Rkizocaulon veins, Sap. (p. 57, pi. x. 

 fig. 22), is very small, and in itself hardly satisfactory as an 

 example of a monocotyledonous species. Other fragments of 

 parallel- veined leaves are referred to five species of Poacites; it 

 may be that we have in them portions of monocotyledonous leaves, 

 but the specimens are so small and fragmentary, that one cannot 

 feel much confidence in them as trustworthy evidence in so 

 important a matter. 



INFRA-CRETACEOUS (Valanginian to Aptian). 

 Adiantum aneimicefolium, Sap., p. 82, pi. xv. fig. 21. 



There is apparently no evidence that this fragment belongs to 

 the genus Adiantum : cf. Ruffordia Gopperti var. latifolia (Vol. 1. 

 PI. VI. Figs. 1 and la). Similarly there does not appear to be 

 sufficient reason for naming the fragment represented in pi. xvi. 

 fig. 14 Marattia minor, Sap. Oleandridium tenerum, Sap., p. 85, 

 pi. xv. fig. 3; pi. xvi. fig. 18, as Saporta points out, closely 

 resembles Taeniopteris Beyrichii (Schenk). The leaf figured as 

 Glossozamites Irevior, Sap., pi. xvi. fig. 32, may be a pinna of 

 Otozamites Klipsteinii (Dunk.). 



Saporta has drawn my attention to the resemblance of Cyclopitys 

 Delgadoi, Sap. (p. 91), to the specimen figured by me in Vol. I. 

 (p. 19, PI. I. Fig. 7) as probably an equisetaceous sheath. 



From these infra-Cretaceous strata we have several specimens 

 referred to Rhiwcaulon and Poacites, which may be portions of 

 monocotyledonous leaves, but the leaf fragment spoken of as 

 Yuccites fractifolius, Sap., p. 110, pi. xix. fig. 200, cannot be 

 accepted as a certain monocotyledon. A few specimens are 

 described as probably dicotyledons, but the existence of such 

 plants at this horizon is considered as still problematical. 



INFRA- CBETACEOITS (Urgonian to Albian). 



Sphenopteris circalemis, Sap., p. 126, pis. xxiv. and xxv. : 

 cf. Onychiopsis elongata (Geyl.). S. cuneifida, Sap., p. 127, 

 pi. xxiii. fig. 5. This closely resembles the finely divided form 

 of Ruffordia Gopperti (Vol. I. PI. IV.). 



An interesting series of specimens is described and figured 

 under the name of Isoetes Choffati, Sap., p. 134, pis. xxiv., xxv., 

 and xxvii. ; these fossils show a striking resemblance to this 

 recent genus of vascular cryptogams. Among the specimens 



