PLATE 20. 



SECTION Z.NEPINA. 

 FAMILY 1. RANATRID.E. 



Genus 1. BANATEA (p. 581). Fig. 2, E. linearis (p. 582) ; 2a, an- 

 tenna ; 26. head in profile ; 2c, fore leg. 



FAMILY 2. NEPIDjE. 



Genus I. NEPA (p. 583). Fig. 1, N. cinerea (p. 584); la, head 

 in profile; 16, underside; "Lc, antenna; Id, head and 

 rostrum in front ; !<?, rostrum with the setss exserted ; 

 I/, fore leg. 



SECTION 4>. NO TO NEC TINA. 

 FAMILY 1. NOTONECTID^E. 



Genus 1. NOTOKECTA (p. 585). Fig. 4, ^T. glauca (p. 587) ; 4a, 

 underside ; 45, rostrum ; 40, antenna ; 4d, fore leg ; 4ie, 

 middle leg; 4^ hind leg. 



FAMILY 2. PLEID^E. 



Genus I. PLEA (p. 590). Fig. 3, P. minutissima (p. 591). (See also 

 PL 21.) 



SECTION $.CORIXINA. 

 FAMILY 1. CORIXID^E. 



Genus 1. COEIXA (p. 591). Fig.' 5, C. Geoffroyi (p. 593); 5a, under- 

 side $ ; 56*, head in profile ; 5c, antenna ; 5d, pala ^ 

 side view ; 5e, pala $ , side view ; of, hind leg. (See also 

 PI. 21.) 



#ew* 2. CTMATIA (p. 613). (See PI. 21). 



FAMILY 2. SIGARID^E. 



Genus 1. SIGAEA (p. 615). Fig. 6, S. minutissima (p. 616) ; 

 6, pala ^ ; 66, pala $ ; Qc and Qd, antenna. 



