SCIENTIFIC SURVEY. 199 



Norway laying its eggs in the stems of Solidago or Golden Kod. 

 It made a longitudinal incision with ragged edges into the pith of 

 the plant, then with its ovipositor forced its eggs some distance 

 down in the pith below the outer opening ; there were two rows of 

 eggs succeeding tho first single one, each pair diverging outwards, 

 the lower ends of each pair nearly touching each other, and all the 

 pairs were placed very near together. The habits of the seventeen 

 year locust which does not inhabit Northern New England, are 

 well described by Dr. Harris in his Treatise. The young lai-vae 

 feed on the roots of the oak and apple, clustering upon the roots, 

 and sucking the sap with their beak-like mouth. 



Membranicidae. Antennae three-jointed ; head broad, with two 

 ocelli. The insects of this family assume the most grotesque forms. 

 They are great leapers. Ceresa is broad, wedge shaped, green or 

 brown color, and two species are found in great profusion in bushes 

 in August and September. Different species of Eutilia, which are 

 often notched upon the back, are found upon the stems of golden 

 rods and birches, and closely resemble the surface they are upon. 

 They lay masses of white eggs on the plants they frequent. Glas- 

 toptera proteus, convex above and in front and highly colored, is 

 injurious to the cranberry in Massachusetts. It is a common Maine 

 insect. 



Tettigonidae. — Leaf-hoppers. They pass all their lives on the 

 leaves of plants, inserting their beaks into the leaves and sucking 

 the sap, thus causing the leaves to wither and also the twigs, pro- 

 ducing what is called " Fire-blight," having much the same effect 

 that the Scolytus produces. 



The species of this family are very numerous, and are found 

 hopping on leaves and herbage late in the summer, though a few 

 species are among the earliest spring insects. There are some 

 yellowish species found in moss and grass by the side of pools and 

 puddles in woods just as the snow is going off. The eggs are laid 

 in autumn to be hatched in the spring. A very abundant species 

 on grass, producing what is called " frog spittle," can easily be 

 traced through all its changes by frequently examining the froth 

 which surrounds them. Tettigonia viiis is a tenth of an inch long, 

 straw yellow striped with red ; it lays its eggs in summer and 

 hides among the dead leaves during the winter. T. rosae, a still 

 smaller species, is found on the rose. As a family these insects 

 are characterized generally by their oblong outline, being convex 



