588 NOTONECTINA. 



Thorax. Pronotwn shining, yellowish - cinereous, posteriorly 

 greenish fuscous. Scutellum black, dull. Elytra; Clavus and 

 Corium dull, cinereous or ochraceous ; Clavus with a brown spot at 

 the apex ; Corium ; anterior margin clear, but immediately within it 

 a row of subquadrate brown spots, often confluent; Membrane; 

 external -J- ochreous and dull at the base, more or less brown next 

 the fold, apical portion fuscous, darkest outwardly ; inner -| cinereous 

 or pale fuscous, darker outwardly, slightly shining ; the well-defined 

 margin of both halves pale, shining {N. glauca): or, Clavus ochreous, 

 except a brown-black dash close and parallel to the posterior margin, 

 which is narrowly ochreous ; Corium black-brow r n, sometimes with a 

 posterior ferruginous spot; anterior margin -narrowly, disk with a 

 dash in the middle gradually widening from the base to beyond the 

 centre, and then ceasing abruptly, ochreous; Membrane; external -i 

 at the base concolorous with the corium, dull, the rest of it and the 

 whole of the inner \ smoke-brown, slightly shining; margin uni- 

 colorous (N. furcata). Metanotum black. Wings hyaline; nerves 

 of the 2 anterior cells brown. Sternum black, the sides with close 

 yellow hairs. Legs greenish-ochreous or ochreous ; tibia outwardly 

 with 2 rows of very short black spines. 



Abdomen above, black ; apical segments greenish at the sides ; un- 

 derside black, central keel and sides with yellowish hairs ; Con- 

 nexivum above and beneath dull ochreous, the junctions of the seg- 

 ments brown. 



Length, 7 8 lines. 



N. furcata, Fab., is considered by Fieber, Burmeister, Herrich- 

 Schaffer, and Flor, to be a var. of N. glauca, Lin., but, though we 

 defer provisionally to their opinion, we think the matter has yet to 

 be proved by out-door observers. N. marmorea, Fab., a form which 

 does not, as far as we are aware, occur in Britain, is also quoted by 

 these authors as a var. of glauca. 



Species 2. NOTONECTA MACULATA. 



NOTONECTA MACULATA, Fab. E. S. iv, 58, 3 (1794) ; S. R. 103, 4 (1803) ; 

 Leach Trans. Lin. Soc. xii, 12, 2 (1817); 

 Curt. B. E. i, p. & pi. 10 (1824).] 



Elytra ferruginous, spotted with black-brown ; abdomen above, orange, 

 with a large black spot. 



