296 



CHEIHOLEPIS. 



genus Cheirolepis for Brachyphyttum in describing Schenk's species, 

 and wisely restricts the application of the latter term. The 

 Wealden Conifer, Sphenolepidium Kurrianum (Dunk.), 1 also bears 

 a distinct resemblance to the Jurassic species ; but in both 

 Sphenolepidium and Cheirolepis the nature of the cones is included 

 as an important generic character in the diagnosis. In the case 

 of Phillips' Brachyphyllum setosum we are without the important 

 evidence which cones would supply, and it must be admitted that 



Fig. 53. Cheirolepis setosus (Phill.). 



A. From the Scarborough Museum. (Nat. size.) 



B. From the "Whitby Museum (No. 2382). (Nat. size.) 



the form of the vegetative branches alone is insufficient as a guide 

 to affinity when we have to deal with such a type as that 

 represented in Fig. 53. 



While admitting the impossibility of determining with certainty 

 the true generic nature of the specimens of this species, we 

 may adopt Cheirolepis as a generic designation in preference to 



1 Seward (95), p. 200, pis. xvii. aud xviii. 



