PLATE A. 



Fig. 1. — Body of Tettigonia viridis, seen from the 

 upper side. a. Vertex or crown, at the base of which 

 the ocelH are seen. f. Upper part of the frons or face, 

 which passes over to the under side of the head. 

 g. Ocuh, or compound eyes. h. Neck, connecting the 

 head with the pronotum. c. Bosses on the pronotum, 

 under which the muscles are placed to work the wings. 

 d. The scutellum, below which may often be traced 

 the metathorax. i to s. Kepresent the somites, or 

 body-rings of the abdomen ; the last ring carries the 

 pygofer. e. Part of the costa of the elytron, t. The 

 insertion of the wing. In some species the insertions 

 of the elytra are covered by small scales or tegulas. 



Fig. 2. — The same insect, seen from below. /. The 

 frons, which is often striated with colour, a. The 

 antennae. /. The guise, or cheeks; and below these the 

 clypeus, c, ending with the rostrum, r, containing setae. 

 The fore legs, as in other insects, rise from coxae 

 articulated to the sternum ; the middle legs rise from 

 the meta-sternum, and the hind legs from the post- 

 sternum. X. Coxae. 7n. Femur, t. Tibia, n. Tarsus. 

 The rings of the abdomen are thrown into folds, on 

 the under parts of which the stomata are placed. The 

 middle plates are much broader. In Tettigonia, five 

 distinct rings are to be counted, succeeded by the 

 navicular plates (6), and the two large valves, which in the 

 female enclose the complicated saws and appendages. 

 In the males, the pygofer encloses the genitalia. 



Fig. 3. — Head of one of the Jassidse, viewed partly 

 from the front. /. Frons. g. The eyes. i. Ocellus, a. An- 

 tenna, c. Clypeus. r. Rostrum, with its basal joint. 



Fig. 4. — The ocellus, highly magnified, showing its 

 lens-like form. 



Fig. 5.— Part of the underside oi Tettigonia. f. Com- 

 mencement of the frons. c. Clypeus. A;, /. Parts of 



