August 1S92.] 



PSYCHE. 



309 



with a rather broad shallow, subacute, notch; 

 the edge of the thin lobe on either side, more 

 or less sinuated or even notched. Pygofers 

 surpassing the apex of the oviduct. Length 

 7-i mm. 



This insect seems to be common 

 throughout the northern and eastern 

 States and Canada. 



2. CHLOROTETTIX TERGATUS FITCH. 



Character of the head same as those of the 

 preceding species. Genitalia: Male: Valve 

 broad triangular, apex obtuse. Plates large, 

 broad, covering the pygofers, their sides very 

 slightly sinuated, their tips broad and obtuse, 

 a little indexed and overlapping, submargin 

 armed with a row of short spines, margin 

 sparcely fringed with soft white hairs. Pyg- 

 ofers produced superiorly in a prominent 

 angle, and below in a curved bill-hook shaped 

 appendage enclosing the styles. Female : 

 Last ventral segment broad, outer angles 

 rounded, apex truncated with a lanceolate 

 notch reaching over half way to the base; 

 pygofers equalling in length the stout ovi- 

 duct. Length 7 mm. 



This species appears to be coexten- 

 sive in range with the preceding than 

 which it is less abundant, at least in 

 western New York. It frequents damp 

 meadows and pastures where Carex 

 and other marsh grasses abound. 



3. CHLOROTETTIX V1RIDIUS II. Sp. 



Form of C. unicolor <ind tergatus. Smaller, 

 apple-green suffused with yellow on the 

 connexivum, or yellowish green in alcoholic 

 specimens. Length 6-7 mm. 



Front broad and convex, sutures curved 

 outward a little below the antennae ; clypeus 

 broad, almost rectangular; cheeks unusually 

 broad, prominently angled below the eves, 

 margin bevond the lorae narrow. Genitalia : 



Male : Valve broad and short, resembling 

 somewhat in form the ultimate ventral 

 segment than which it is a little shorter, 

 apical margin gently arcuate. Plates nearly 

 rectangular, transverse, hardly longer than 

 the ultimate ventral segment, slightly pro- 

 duced at their distal angles, outer angles 

 rounded, margin with a few short spines and 

 soft hairs. Pygofers Ungulate, about twice as 

 long as the valve, whitish hyaline and thin 

 in texture. Female : Last ventral segment 

 broadly excavated from the prominent lateral 

 angles nearly to the base on the median 

 line, the sides of this incisure, at about its 

 middle, interrupted by a short, obtuse, black- 

 ish tooth. Pygofers slightly exceeding the 

 stout oviduct. 



Color apple-green ; connexivum and some- 

 times the edge of the dorsal segments washed 

 with yellow; rostrum, base of the antennae, 

 tarsi, spines of the posterior tibiae and the 

 oviduct, soiled white or even fulvous. Elytra 

 vitreous, slightly tinged with fulvous in the 

 male, or green in the female; nervures green- 

 ish. Wings white, iridescent, nervures con- 

 colorous. Eyes dark brown. 



Described from six examples collected 

 near New York City by Mr. E. B. 

 Southwick, in July ; one female taken 

 at New Brunswick, N. J., July 20th, by 

 Prof. J. B. Smith, and numerous speci. 

 mens received from Mr. Howard Evarts 

 Weed, taken in Mississippi. 



This interesting species may be dis- 

 tinguished from C. unicolor and ter- 

 gatus, its nearest allies, by its smaller 

 size, dark green color and the form of 

 the genitalia, which differ widely from 

 those of any other species known to me. 

 Apparently it is very abundant in the 

 southern states where it replaces C. 

 unicolor and ter-gatus of our northern 

 fauna. 



