584 NEPINA. 



sternum posteriorly retuse, xyphus rounded; Jlleso- and Meiasieyntim 

 transverse ; the latter ^^ the length of the former. Ze^s ; 2nd pair 

 shortest ; coxce ; 1st pair stout, not -| so long as the thighs ; 2nd 

 and 3rd pairs subglobose ; all the fulcra interposed between the 

 coxa and thigh ; tliiglis ; 1st pair incrassated, suddenly smaller to- 

 wards the apex, with a wide groove on the underside throughout ; 

 tilicB ; 1st pair curved, rather shorter than the thighs, folding back 

 into the femoral groove; tarsi; 1st pair digitate, without claws; 

 2nd and 3rd pairs longest ; claws long, thin, aud not divergent. 



Abdomen above, flat ; beneath with a depressed middle keel ; the 

 1st and 2iid segments so anchylosed that they appear as 1, and thus 

 there seems to be only 5 abdominal segments ; on the upperside the 

 posterior margin of each is concave, much more so on the last ; on 

 the underside it is oblique from the middle to the side margins, 

 except in the last, where it is straight in the middle, across the base 

 of the central genital segment, and is produced obliquely at its sides. 

 Genital segments terminating with a spinose point on each side of 

 the projecting filaments, which are not |- the length of the body. 



Species 1. — Nepa cinerea. 



Nepa cineeea, Li)?. F. S. 906 (1761) ; Scop.^nL Cam, 119, 350 (1763) ; 

 Lin. S. N. 714, 5 (1767); De G. Mem. ill, 361, 1, pi. 

 IS, figs. 1—13 (1773) ; Fab. E. S. iv, 63, 7 (1794) ; 

 S. R. 107, 8 (1803); Lat. Hist. Nat. xii, 284, pi. 95, 

 fig. 8 (1804) ; Gen. iii, 148, 1 (ISO/) ; Pcinz. P. G. 

 95, 14 ; Fall. Hem. Suec. 170, 1 (1829) ; Burm. Handb. 

 ii, 196, 2 (1835) ; //. Schf. Norn. Eat. i, 63 (1835) ; 

 C«r^. B. E. XV, p. & pi. 700 (1838); Zett. Ins. Lap. 

 283, 1 (1840) ; Blanch, Hist. Nat. iii, 90, 1 (1841) ; 

 Am. et Serv. Hem. 440, 3 (1843) ; E.ScJif.V^&,\iz.y\u, 

 21, t. 255, fig. 796 (1S45); Flor, Rhyn. Liv. i, 702, 1 

 (1860); Fieb. Europ. Hem. 102 (1861). 



Dull, earth-brown. 



Head, Fronotum, Scutellum, and outer sides of Elytra, granulated. 

 Wings pale gray, nerves red or yellowish. Legs ; 2nd and 3rd 

 pairs, tliiglis with the base and 1 or 2 indistinct spots, ding}^ ochreous ; 

 tihice with an indistinct ochreous ring near the base. 



Abdomen above black, sides and margins of the segments carmine; 

 Genital segments and spiracular filaments brown ; undcr.sidc dull 

 ochreous, mottled with brown or red. 



