BUFFORDIA. 85 



V. 2351. Agrees with V. 2354, except in the slightly greater 

 breadth of the ultimate divisions. Yenation distinct. Associated 

 with this fragment are others of a much more narrowly segmented 

 form ; this juxtaposition on the same rock-surface of pieces of 

 fronds showing considerable difference in the breadth of the 

 pinnules is of common occurrence. Ecclesbourne. Rufford Coll. 



V. 2354. Part of a larger frond, with the pinnae somewhat 

 farther apart than in most cases ; the segments are of median 

 breadth and agree closely with the pinnules of other specimens 

 referred to this species. This specimen appears to show the 

 quadripinnate character of the frond. 



V. 23540. Eachis showing sub-opposite and alternate pinnae ; 

 pinnules short and of medium breadth ; a more open habit than in 

 most specimens. Ecclesbourne. Rufford Coll. 



The following specimens illustrate various forms of Ruffordia 

 Gopperti (Dunk.), but show no characters other than those to 

 which reference has already been made in the descriptions of more 

 perfect examples. 



V. 2151, V. 2152, V. 2153 (several specimens), V. 21560. Cf. 

 PL V. Fig. SB (V. 2156), also PI. Y. Fig. 4 (V. 2243), V. 21660, 

 V. 2294. Ecclesbourne. Ru/ord Coll. 



V. 2877. Fragments of the coarser and finer forms of pinnae. 

 Near Hastings. BecTdes Coll. 



2. Ruffordia Gopperti, var. latifolia. 



As a convenient method of expressing the difference between the 

 extreme forms of this species, characterized by the greater breadth 

 of the ultimate segments, and those with narrowly linear segments, 

 such as the specimen figured in PL IY. (V. 2157), I have decided 

 to designate the more broadly-lobed forms by the term latifolia. 



V. 2333. PL YI. Figs. 1 and la. 



The portion of the frond figured may possibly be a basal pinna. 

 The close resemblance between such specimens as this and 



