PLATE XXIX. 



PAGE. 



Fig. 1. Pariostegus myops, Cope. Twice natural size. (See Transac. American Philos. Soc, 1868, 

 XIV., p. 15.) 



2. Ptyonius pectinatus. Cope. Twice natural aize 377 



3. Scale of abdomwi of Volosteus scutellatiis, Newb. Twice natural sizg 407 



