28 



N. S. ENTOMOLOGICAL SOCIETY. 



Granulated — Bearing minute grains, like grains of sand. 



Humeral angle — The angle formed where the tegmina deflects from the dorsum to the 



sides. 

 Intercalary vein — A short, unbranched vein in central part of tegmina. See Fig. 10 a. 

 Lateral — At or on the sides. 

 Lateral lobe 3 — Sides of pronotum. 



Metazona — Posterior half of pronotum. See Fig. 9 d. 

 Median — At or along the centre. See Fig. 7 a. 



Pronotum — The shield-like covering of the prothorax. See Fig. 1 e. 

 Pronotal process — The elongated part of pronotum in the Tettiginae. See Fig. 2 a. 

 Prozona — The anterior dorsal part of pronotum. 

 Prosternal spine — A distinct spine or tubercle on prosternum between the front pair 



of legs. See Fig. 3. 

 Pulvillus — The small pad between the tarsal claws. 

 Sulci — See sulcus. 



Subgenital plate — Plate lying directly beneath the genital organs. See Fig. lib. 

 Sulcus — A groove or furrow. See Fig. 9 a. 



Sinus — A scalloped edge. In pronotum of Tettiginae. See Fig. 2c. 

 Scapular area — That portion nearest to the front edge of tegmina. See Fig. 10b. 

 Tegmina — Front wings. See Fig. lh. 

 Tarsi — Last joints of legs. See Fig. In. 

 Tibia — Fourth joint of legs. See Fig. lm. 

 Tubercule — See prosternal spine. 

 Vertex— Front part of upper surface of head between the front part of the eyes. 



See Fig. 4a. 



EXPLANATION OF PLATE. 



Fig. 1. Lateral Aspect of Locust. 



a. Antennae 



b. Ocelli 



c. Compound eye 



d. Maxillary palpi 



e. Pronotum 



f. Mesothorax 



g. Metathorax 



h. Tegmina 



i. Wing 



j. Auditory organ 



k. Trochanter 



1. Femur 



m. Tibia 



n. Tarsi 



o. Spiracles 



p. Cerci 



q. Ovipositing plates 



r. Pulvillus 



Fig. 2. Pronotum of A. ornatum. 



a. Pronotal process. b. Tegmina. 



Fig. 3. 



a. Prosternal spine of M. atlanis. 



b. Prosternal spine of M . femur-rubrum . 



Fig. 



c. Sinuses 



a. Dorsal surface of head of A. ornatum. a. Median carina. 



b. Lateral view of head of A . ornatum. a. Vertex projecting. 



Fig. 5. Subgenital plates of males of M. atlanis and M. femur-rubrum. 



a. Median notch. 



b. Apical margin of plate. 



Fig. 6. Dorsal surface of head. 



a. Disc. 



b. Foveolae. 



