Vol. xxiii] ENTOMOLOGICAL NEWS. 115 



Comparison with other species: The present species ap- 

 pears to have most points in common with the following three 

 species: X. brevipenne, X. nemorale and X. nigropleurwn. 



From X. brevipenne the new type may be distinguished by 

 (i) the curved ovipositor; (2) the wider tympanum of the 

 male tegmina; (3) the entirely different form of the cerci of 

 the male (cf. text-figures 4 and 5) ; (4) the more prominent 

 internal tuberosity of the male cercus ; (5) the invisibility of 

 most of the cereal tooth when viewed from above while in its 

 usual position; (6) the form of the cereal tooth which is rela- 

 tively slender and tapering, not swollen and obtuse as in 

 brevipenne; (7) the usual, though not invariable, presence of 

 sub-femoral spines on the hind femora; (8) the prevalence of 

 orange rather than chestnut on the tip of the abdomen ; (9) 

 the green, instead of brown, cerci and (10) the almost total 

 absence of chestnut from the tegmina. 



From X. nemorale Scudder, this species differs in (i) its 

 smaller size and slenderer form; (2) the narrower and more 

 elevated fastigium of the vertex; (3) the relatively longer 

 tegmina, especially in the male; (4) the less prominent veins 

 and veinlets of the tegmina; (5) the greater difference in pro- 

 portions of the tegmina and wings, the latter in spartinae be- 

 ing considerably shorter than the tegmina, while in nemorale 

 they are only slightly shorter; (6) the usual presence of sub- 

 femoral spines; (7) the less pronounced curve of the oviposi- 

 tor; (8) the form of the sub-genital plate of the female, which 

 is more truncate in nemorale than in spartinae; (9) the slen- 

 derer tips of the tegmina; (10) the generally green instead of 

 brown color; (n) the green, instead of brown, cerci of the 

 male. 



(NoTE: These comparisons are based upon examples of 

 X. nemorale in the collection of the Academy of Natural 

 Sciences). 



From X. nigroplenrum Bruner, spartinae differs in its (i) 

 smaller size and slenderer form; (2) its shorter hind femora 

 and (3) tegmina; (4) the curved ovipositor which is always 

 distinctly shorter than the body; (5) the apparent absence of 



