PLATE "VII. 



Fig. 1. Alethopieria Whitneyi, Newb., upper portion of frond 14."> 



\<i. " " Lower portion of frond 14f> 



1/;. ". " Snminit of frond, Los Bronees, Sonora 145 



'I. Camploptcris Iirmondi, Newb., central portion of frond 14(i 



"2<i. '' " Portion of pinna, showing nerval ion, Los Broncos, Sonora 14(5 



