178 THE CANADIAN ENTOMOLOGIST. 



plants and shrubs growing in ilic Missouri Botanical Gardens at 

 St. Louis. This species, the nymphs particularly, seem to be rather 

 sluggish in their mov^ements. They do not jump or run cjuickly, 

 and it is quite easy to put one's finger on them. 



DiedrocephaJa coccinea Say, one of the most handsome and 

 striking forms, was taken where\'er collections were m.ade. While 

 not found in such numbers as D. vwllipes or D. versitta, \ct they 

 were observed feeding on a great variety of plants, including over 

 50 species of weeds, on many ornamental plants and shrubs, and 

 various trees. It was the only species found to feed on the leaves 

 of the American Holly. Many of their nymphal cast skins were 

 observed on the under side of the leaves of Magnolia trees, 

 upon which they undoubtedly feed. Adults are attracted to lights 

 at night and remain almost inactive during the day time. 



Phlepsius Irroratits Say appeared to be of considerable economic 

 importance to alfalfa and clover throughout the central Mississippi 

 Valley states. It was also collected in abundance from various 

 grains during the spring months. The greatest damage done seems 

 to be caused by the feeding of the nymphs and adults upon the 

 stems, which they prefer to the leaves. This irrorate leafhopper 

 exhibits flight as much in day time as at night. Adults and nymphs 

 were captured at all seasons of the year. 



Agallia sanguinolenta Prov., the clover leafhopper, has a 

 general distribution, and occurred in sufficient numbers to cause 

 some alarm to alfalfa growers. This with Empoasca mali caused 

 considerable injury to alfalfa and red clover in southeast Missouri 

 during the early summer months. It proved, however, to be easily 

 captured in the hopperdozer. This is one of the hardiest of the 

 Jassoidea. Adults were observed to be active in grain fields during 

 the winter months on comparatively cold days, when other species 

 were in hiding or hibernating. The list of food plants is quite 

 limited, it having been taken from but few other plants than those 

 of the Leguminosae family. 



Empoasca mali Le B. was probably the most injurious jassid 

 of the year, adults and nymphs attacking alfalfa, clo%er, and 

 several other field crops in great numbers. The species occurs 

 everywhere in the Mississippi Valley, and is most injurious in the 

 central states. It easily adapts itself to change of food plants, as 



