LOCUSTID.E. LOCUSTA. 23 



Sp. 8. parallela. Thorace carinis lateralibus subredis ; supra lateribusque 

 viridis, subtus jlavicans, geniculis pedum posticorum nigris, elytris pallidis, 

 unicoloratis. (Long. corp. 8 — 10 lin.) 



Gry. parallelus. Zettersted Orth. Suec. p. 85.—Steph. Nomen. 2d edit, col 110. 



Thorax with the lateral ridges nearly straight; head and thorax green, the 

 latter entirely of that tint; elytra in the male rather shorter than the 

 abdomen, dilated and bisinuated on the costa ; in the female about half the 

 length; in both sexes entirely green and immaculate ; abdomen greenish- 

 brown, with the sides occasionally spotted with black, and the lower 

 surface pale; legs testaceous, with the hinder femora above greenish, 

 beneath yellow, with black knees. 



Also found, but not commonly, within the metropolitan district. 



Sp. 9. montana. Thorace carinis lateralibus antice nounihil curvatis ; viridis 

 subtus Jiavida, geniculis posticis nigris ; elytris in mare abdominis longitudine, 

 in foemina tertia parte thorace capiteque longioribus. ( Long. corp. 8 — 10 lin.) 



Gry. montanus. Charpentier Horce Ent. p. 173. — Lo. montana. Steph. 

 Nomen. 2d edit. col. 110. 



Thorax with the posterior ridges very slightly curved; head rather wide, and, 

 with the thorax, green ; elytra in the male as long as the abdomen, in the 

 female abbreviated; in both greenish ; in the former sex they are rather 

 broad, and in both the wings are nearly as long as the elytra ; beneath the 

 body is yellowish ; legs pale testaceous, with the knees of the hinder pair 

 black. 



Also slightly variable, some examples having a black streak on each side of 

 the thorax, and others wanting it; and in some females there is a faint 

 yellowish line at the base of the elytra. 



Found near Dover, but apparently not common. 



Sp. 10. tricarinata. Thorace carinis tribus atris valde elevatis rectis ; rosea, 

 elytrisfuscescentibus apice nigricantibus, margin e antico strigd pallida liturdque 

 nigricante adnata. (Long. corp. 10 lin.) 



Lo. tricarinata. Steph. Catal. 302. No. 3335. 



Head broad, acute; rosy, or flesh-colour, rest of the body the same, with the 

 base and sides of the abdomen dusky; thorax with three strongly elevated 

 straight black ridges^ its anterior margin also black; elytra rather shorter 

 than the abdomen, pale fuscous, with the apex dusky ; at the base, near 

 the costa, is a long slender whitish streak, adjoining to which on the disc is 

 a broader blackish one; legs entirely flesh-colour, immaculate. 



This very distinct insect is apparejitly very rare : I have one 

 specimen which I caught near London, but I forget its exact 

 locality. 



