﻿Sept. isgs] Morse. New North American Tettigin/E. 109 



specimens were procured, thus rendering necessary the restoration of 

 Harris' name to the New England species. As a designation for the 

 long-winged form is desirable, I here propose for it the name pennata, 

 and, believing the two forms to be one species, its full name becomes 

 T. parvipe7inis pennata. 



In arriving at these conclusions I have been especially aided by an 

 excellent series of specimens collected in Indiana by Prof. W. S. 

 Blatchley, some of which were obtained directly from him through ex- 

 change or for examination, and others were kindly loaned by Dr. J. L. 

 Hancock, of Chicago. I wish to call attention to the importance, in 

 in some cases even the necessity, of series of specimens in order to 

 arrive at a definite knowledge of the group. 



I have examined specimens of parvipennis from New England, 

 New York, New Jersey, Pennsylvania, West Virginia, Indiana, Illinois, 

 Minnesota and Ottawa, Canada. In Vigo Co., Ind., it is about 

 equally common with another dimorphic species included under the 

 name of lateralis (and polymorpha) by Blatchley. This latter species 

 I have seen also from Maryland, West Virginia, southern Illinois, Ken- 

 tucky, Tennessee, North Carolina, Mississippi, Louisiana, Texas. For 

 the present it may be called as heretofore though it is doubtful if it 

 is identical with the Florida form described by Say. Small series of 

 specimens before me from Florida, Georgia and North Carolina present 

 certain differences from it and between themselves which may be re- 

 garded as either varietal or specific, at present it is impossible to say 

 which is the more probable. As soon as time and material permit I in- 

 tend to supplement these descriptions by presenting drawings of these 

 various forms and of all the species of the genus obtainable, whose dis- 

 crimination in the absence of figures is attended with much difficulty. 



The characters of parvipennis which distinguish it most readily 

 from the other species are the strongly projecting vertex, less promi- 

 nent eyes (see Morse, Notes N. E. Acrid. I, plate: Psyche, Oct., 

 1894) and stouter antennae. The lateral carinas of the pronotum are 

 usually but slightly sinuate, the anterior portions being distinctly diver- 

 gent and passing rather smoothly into the humeral portions. The an- 

 tennae are slightly flattened, the joints of the middle third not over two 

 or two and-a-half times as long as broad. In the other species the an- 

 tennae are filiform, and the joints of the middle third are three to four 

 times as long as broad ; the vertex is less projecting, the eyes more 

 prominent, and in some the lateral carinae are parallel in the anterior 

 part of their course. 



