426 Dr. David Sharp on the structure of the 



PLATE XIII. 



Fig. 8. E. rufo-marginata, with the rectal-cauda (c) elevated 

 and drawn in, and the oedeagus deflexed so that its apical part (o) 

 is protruded ; a. o. orifice of rectal-cauda, I. a. lateral appendage, 

 t. theca. 



Fig. 9. E. rufo-marginata ; a, rectal-cauda dissected off, showing 

 the large excavation (li) on its under surface for the accommodation 

 of the extremity of the eedeagus ; b, under surface of termination 

 of rectal-cauda, showing the orifice or anal aperture a. o. ; c, upper ' 

 surface of rectal-cauda; d, eedeagus (o.) closely embraced by its 

 theca {t.). 



Fig. 10. Piezosternum suhulatum, Fab., viewed directly from 

 above ; c. cauda retracted and elevated, I. a. presumed lateral lobes 

 of eedeagus, i. inferior accessory process ; the lateral appendages 

 are not lettered, but are seen behind the lobes of the oedeagus. 



Fig. 11. Nezara sp. ? (Madagascar, Cowan) ; a, viewed from 

 above ; b, from behind ; c. rectal-cauda, I. a. lateral appendage. 



Fig. 12. The same {Nezara sp. ?, Madagascar, Cowan), after the 

 rectal-cauda has been dissected off, viewed from above and in front; 

 o. eedeagus, t. theca. 



Fig. 13. Pharypia pulchella, seen from behind and slightly 

 from below. The artist has not succeeded with this figure ; the 

 parts being all deep black, it is rather difficult to see the outlines. 



Fig. 14. Edcssa sp. '? (Corrientes), showing the ornamented 

 rectal-cauda extending all along the middle of the segment. 



Fig. 15. Edessa cornuta, Burm., viewed from behind; c. rectal- 

 caiida, I. a. lateral appendage, the shape of this latter not correct. 



Fig. 16. Nezara viridula, L. (Madagascar), viewed directly from 

 behind ; c. rectal-cauda, I. a. lateral appendage. 



Fig. 17. N. marginata, De Beauv., viewed from behind and a 

 little from one side ; c. the large and complicated rectal-cauda. 



Fig. 18. MegarJiynchus limatus, H.-S., viewed from behind. 



Fig. 19. Acanthosoma (Cyphostethus) tristriatus, viewed from 

 behind; La. lateral appendage, c. rectal-cauda. 



Fig. 20. Catacanthus incarnaius, Drury ; c. ornament on rectal- 

 cauda. 



PLATE XIV. 



Fig. 21. Poecilochroma lata, seen from above ; o. oedeagus, 

 c. the very short rectal-catida. 



Fig. 22. P. lata, seen from behind. 



Fig. 22a. P. lata, eedeagus, lateral view; o. oedeagus proper, 

 t. presumed theca. 



Fig. 22b. P. lata, oedeagus proper, posterior aspect. 



