174 BRITISH OETHOPTEEA. 



genital lamina triangular, roundly emarginate at the 

 apex. Ovipositor some 21 mm. long, brown, smooth, 

 nearly straight till towards the tip, where it turns 

 upwards somewhat, is a little wider, and is slightly 

 crenulated. 



EGG. --Cigar-shaped, but slightly curved; brown; 

 about 5 mm. long and 2 mm. in greatest width. 

 (Extracted from the body of a female.) 



NYMPH.- -All the examples of this insect that I 

 possess are mature. Of the nymphs Brunner says : 

 " Larvas alis maculis magnis cluabus nigris, interdum 

 obliteratis." This says but little, as apparently the 

 dark spots on the wing-pads are not peculiar to this 

 species. 



VARIATION.- -T. verrucivora is subject to considerable 

 variation in both size and colouring. In the usual 

 form green is the prevailing colour ; but this tint may 

 be replaced to a great extent by brown. This form 

 was described by Curtis from specimens in the cabinets 

 of Dale and Haw^orth as Acrida bingleii in the follow- 

 ing terms, Curtis considering it a distinct species :- 

 "Male brown, tinged with green. Head rounded, 

 pale and dull green. Thorax of the same colour, 

 slightly carinated, dilated behind. Abdomen piceous, 

 edges of the segments pale. Elytra pale fuscous, 

 tinged with green, spotted with brown, the central 

 spots the largest, interior margin green towards the 

 base. Wings transparent greenish at their base. 

 Legs griseous-yellow ; posterior thighs green at their 

 base, variegated with brown. Female dull and pale 

 ochraceous, variegated with brown. Abdomen pale 

 down the back ; piceous on the sides with irregular 

 pale margins to the segments. Ovipositor slightly 

 recurved, brown with a rosy tinge. ' : Azam, under 

 the name buyssoni, describes a form with the hind 

 margin of the pronotum more rounded, the spot on 

 the side-flap more clearly defined, the elytra longer, 

 the pointed lobes of the supra-anal plate straight, and 



