INSECTS AFFECTING FOREST TREES. 529 



Stictocephala incrmis Fabr. 



This is a greenish-brown, inconspicuous tree hopper, about 5/,6 of an inch in 

 length, shaped somewhat like a beechnut, and it is not marked by any excessively 

 developed processes. This little species was present in small numbers on hard pine 

 at Karner in igoi. Two specimens were taken July 19th, and it was probably 

 present, though not captured, on other dates. Dr. Fitch records this species as 

 occurring on oak. 



Tliclia acjtininata Fabr. 



This is one of our most grotesquely shaped tree hoppers and is characterized by 

 the enormous development of the prothoracic horn, which extends nearly vertically 

 to the height of y^, of an inch, plate 16, figure 17. It is a rare species and a single 

 specimen was taken on scrub oak at Karner July 24, 1901. 



Thelia inonticola Fabr. 



This grotesque little leaf hopper measures about Y^ of an inch in length, and 

 may be recognized by its yellowish-brown color and the peculiar elevation on the 

 immensely developed prothorax. It is a very common species on the Virginia 

 Creeper or Ampelopsis, and was taken by the writer in small numbers on scrub oak 

 at Karner in July, 1901. Dr. Fitch, in his catalogue of the Homoptera of the State 

 of New York, published in 1851, described this form as T.qucrci, and states that it 

 occurs on scrub oak. 



Tc/ainoiia godiugi Van Duz. 



This species resembles the preceding in color and general shape, except that the 

 prothoracic elevation is much narrower and is almost horn-like in character. A 

 single specimen was taken on scrub oak at Karner, July 27, 1901. 



Arcliasia galcata Fabr. 



This apple green species has the thorax enormously developed into an arching 

 shield, which covers most of the body. It is represented at plate 16, figure 16, and 

 -was taken in small numbers on scrub oak at Karner in 1901. 

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