157 



Destutia sericeata B. & McD. 



We find on going over our collection that this species recently 

 described by us (1917, Contr., Ill (4) 261) is closely related to the 

 species now listed as Phcngommataca dissimilis Hist. ; typical dis- 

 similis from Glenwood Spgs., Colo., is without cross lines and of a 

 rather deeper yellow shade than sericeata but we have specimens from 

 Jemez Spgs., N. Mex., showing traces of lines which have a similar 

 course to those of our species although not so clearly defined. Both 

 species are without the tibial hair-pencil, a feature which led Hulst 

 to place dissimilis in the genus Phcngomntataea where it is clearly mis- 

 placed ; we believe they would be better placed in Grossbeck's genus 

 Destutia which differs from Sabidodes in the lack of this tibial hair 

 pencil; they may prove to be merely races or seasonal forms of one 

 species. 



