March. 1921] DaVIS: A.NNOTATKD L16T OF COLORADO CiCADAS. 57 



the wins; the radial cell does not extend heyond the middle, and the 

 eighth apical cell is very large and inversely triangular. 



Platypedia primigenia CockLnll. 



Descrilied and figured in The American Journal of Science for 

 January, 1908, p. 52. from a well preserved specimen found at 

 Florissant in 1907. The following are some of the salient char- 

 acters: Length ahout 23 mm. (the apex of abdomen is lost). Com- 

 pared with the living piitiiami. the l>ody is larger and more robust. 

 As in that species the femora are black. P. primigenia will be easily 

 known from Lithocicada pcrita Cockerell, by the shape of the eighth 

 apical cell, and from Cicada grandiosa Scudd., by the much smaller 

 size. 



It is interesting to learn that the genus Platypedia was represented 

 in Colorado in Miocene times, as it is today. 



EXPLAXATIOX OF PLATE V. 



Fig. I. Proarna vetiosa (Uhler). 



Fig. 2. Okaitagana synodica (Say). 



Fig. 3. Okanagana strialipes (Haldeman). 



Fig. 4. Okanagana hesperia (Uhler). 



Fig. 5. Platypedia latipcnnis Davis. Type. 



MISCELLANEOUS NOTES 



Aglais j-album Boisduval and LeConte. — A female of this species 

 flew in my office window, at Broadway and Houston Street. New 

 York City. September 8th. 1920. I have not noticed any other Man- 

 hattan Island records. The specimen is in the collection of The 

 American Museum of Natural History.— Gavi.ord C. Hall. 



