283 riKST AJSTNUAL REPORT OF THE STATE EN.TOMOLOGIST. 



and fruit-trees. Prom the injuries that they inflict, and the difficulty 

 of preventing them, they are among the greatest j^ests of gardeners. 



Description of the Insect. 



Of this particular species. Dr. Harris gives the following account : 

 " There is a little tree-hopper, which is found during the months of 

 July and August on the wax-work, or Celastrus scandens, accompanied 

 usually by its young. When fully grown, it is nearly three-tenths of 

 an inch in length, including the horn of the thorax ; it is of a dusky- 

 brown color, with two yellowish-spots 

 on the ridge of the back ; and the 

 first four shanks are exceedingly broad 

 and flat. It is the two-spotted tree- 

 hopper, Memhracis binotata of Say. 

 When seen sideways it presents a pro- 

 Fig. 79.— The two-spotted tree-hopper, file mucli like that of a bird, the head 



Enchenopa binotata — side and dorsal , ^ o t • -, , -, ■, 



views. and neck oi which are represented by 



the curved projecting horn of the thorax ; and a group of these little 

 tree-hoppers, of various sizes, clustered together on a stem of the wax- 

 work, may be likened to a flock of old and young partridges. They 

 appear to pass through all their transformations on the plant, are fond 

 of society, and sit close together, with their heads all in the same di- 

 rection." Fig. 79 represents the insect so faithfully, that by its aid, it 

 may be readily recognized. 



Say's Original Description. 



The species was originally described by Say in a Zoological Eeport, 

 contributed by him to the Narrative of the Long Expedition to the 

 source of St. Peter's Eiver. From -the volume in the N. Y. State 

 Library (now quite rare) we transcribe the title,* and the original 

 description : — 



Memhracis binotata. 



Thorax with a compressed horn extending above the head, and two spots on the 

 back. 



Inhabits the United States. 

 Body fuscous, punctured ; head longer than broad, rounded at tip, minutely 



*Narrative | of ( an Expedition | to the | Source of St. Peter's River, | Lake Winnepeek, 

 Lake of the Woods, | &c. Ac. | Performed in the year 1823, | by order of | the Hon. J. C. 

 Colhoun, Secretary of War, | under the command of | Stephen H, Long, Major, U. S. T. 

 E. I Compiled from the Notes of Major Long, Messrs. Say, | Keating and Colhoun, | by 

 Wm. H. Keating, A. M., &c. | In two volumes. | Philadelphia: 1824. | 



Appendix to vol. II, Part I. Natural History. § Zoology, by Thomas Say [pp. 253-400]. 



