FLOirV or TilK SHASTA FOinfATIOX. 227 



of the plant- pi'ctty \v('ll, and there is Hi tie doulil that- it is \]]v wideh- 

 diffused Clctdoplilchis Hr<nnii<ni<i of the J.owei' Ci'iMaceous. Some of the 

 pinnules, as those depicted in l"i<;-. 10, show trac(>it) of sori too obscure 

 for theii- character to he made out with cei-tainty. Yokoyama" had 

 ali'eady noticed soi'i like those of As{)idium on pinmiles of this iei-n. 

 The sori of the Shasta fossil also appear similar to those of As])idium. 



1 have selected llu'ee specimens- to be fifjured, out of the many 

 yielded by this plant. PI. LXV, V]^. 10 icjjresents a fragment of an 

 ultimate pinna, with pinnules of the lai'fjest size seen. 'Jliis shows ti-aces 

 of soi'i. Fig. 11 re})resents the terminal portion of an ultimate pinna 

 witli normal pinnules. Fig. 9 represents the specimen originally i-eferred 

 with doubt to CJadophJchin indinata. 



The plantoccurs most abuTulantly at localities Xos. 1, 17, li), 20, 21, 

 22, and 23. 



Cladoi'iii.ktus fai>c.\ta Fdiitainc. 



Pi. LXV, Fio;s. 12 14. 



1SS<). Clndophlehift fdlnitd I'^mt.; l'i>i(imar Flora (Monoj^r. IT. .S. Geol. Sui'v.. VdI. 



XY), p. 7"2, 1)1. i\ . Ii>;.s. S, Su: pi. a-, llj^s. 1, la, 2, '.i, 4, 4a, 5, 5a, ti, (ia, 7, 7a; 



pi. vii, iVfii. 1 , la, 2, 2a. 

 1894. Thinnfeldid nirldhUiti Font, [non Yel.] ? in Dillor ct Stantoji: Bull. (icoi. Soc. 



Am., Yol. V, p. 4.50. (PI. LXV, Fig. 14.) 

 lSil5 [1S96]. ThmnfcJdia variahiHs Font, [non Yel.]? in Stanton: Bull. [' . S. (.»>ol. 



Surv., No. 1315, p. 15. (PI. LXV, Fig. 14.) 



A number of .specimens of a large Cladophlebis were found, which 

 can not be distinguished from C. falcata Font, of the Lower Potonuu; 

 beds of Virginia. Pinnules of both large and small size, such as were 

 seen in the Virginia specimens, were obtained. The large pinnules 

 seem to come from lower down on the frond and the smaller from 

 higher up on it. From the number of specimens found at some of the 

 localities yielding the plant, it nmst have been common at those places. 

 It does not, however, seem to have been abundant at many places, 

 for most of the localities show but few specimens. The specimens are 

 all in the foi-m of fragments of ultimate j)inna^, which show only a few 

 pinnules, or of single detached fragments of pinnules. The parts shown, 

 however, are w-ell preserved, for the plant seems to have had a thick 

 leathery texture. 



"Jour. Coll. Sci., Imp. Univ. Japan, Vol. VTI, Pt. TIT, p. 21S, pi. xxiv, figs. 2, 3; pi. xxvii, ligs. 1-4, oc, 5d. 



