HEMIPTERA HETEROPTERA. 201 
5. Stcana Powert. 
Poweri, Dougl. and Scott, Ent. M. Mag. v. 296. 
England. 
6. SIGARA FUSCATA. 
fuscata, Stal, Lug. Resa, 268. 
Monte Video. 
7. SIGARA SCUTELLARIS. 
scutellaris, Stal, Ofv. K. V. Ak. Fork. xv.319; Hem. Afr. iii. 193. 
South Africa. 
8. SIGARA SULCATA. 
sulcata, Sgnt. A. S. EB. F. 3me Sér. viii. 971. Stal, Hem. Afr. iii. 193. 
Madagascar. 
Div. 2. 
Nychia, Stal, Fug. Resa, 268. 
9, SIGARA LIMPIDA. 
Nychia limpida, Stal, Hug. Resa, 269. 
Wampoa, China. 
Fam. 2. NOTONECTIDZ. 
Notonectida, Serv. Hist. Hem. 449—Notonectici, Burm.—Notonectida 
and Pleida, Sta/, Hem. Afr. iii. 190, 192—Notonectidea, Notonecte 
and Plee, Fieb. Hur. Hem. 22—Notonectica, Flor—Notonectina, 
Notonectide and Pleide, Dougl. and Scott, Hem. 48. 
A. Rostrum two-jointed. Antenne three-jointed. - I PLEA 
B. Rostrum four-jointed. Antenne four-jointed. 
a. Prothorax with a large impression in the fore angles. - 2. ENITHARES. 
b. Prothorax with no impression on the fore angles. 
* Fourth joint of the antenne shorter than the third. - 3. Noronecra. 
** Fourth joint of the antenne longer than the third. - 4, ANISOPS. 
Genus 1. PLEA. 
Plea, Leach, Trans. Lin. Soc. xii. 14. Fieb. Fur. Hem. 31,101. Dougl. 
and Scott, Hem, 591—Ploa, Steph. Burm. Handb, Ent. ii. 189. 
Serv. Hist. Hem. 449, Fieb. Ent. Mon. 17, 1. 
Europe. 
1. PLEA MINUTISSIMA. 
, Geoffr. Ins. i. 477—Notonecta minutissima, Fabr, Ent. 
Syst. iv. 59; Syst. Rhyn. 104, Panz. Faun, Germ. 2, 12. Oliv. Ene, 
2D 
