30 BRITISH ENTO.MOSTRACA. 



Genus NEB ALIA. 



NEBALIA, Leach, Zool. Miscell., i, 99, 1S14; Trans. Liun. Soc., xi, 351. 



Thompson, Zool. Research., No. 3, 83. 



Desmarest, Cons. gen. Crust., 24-3. 



Latreille, Cuv. Regne Anim., iv, 153. 



M. Edwards, Hist. Nat. Crust., iii, 353 ; Ann. Sc. Nat., xiii, 

 297 ; 2d series, iii, 309. 



Risso, Hist. Nat. Eur. merid., v, 84. 



Bosc, Man. Hist. Nat. Crust., ii. 



Lamarck, An. s. Verteb., vi. 

 CANCER, 0. Fabricius, Faun. Greenland., 240, No. 223. 



Herbst, Krabbeu, ii, 111. 

 MONOCULTJS, Montagu, Trans. Linn. Soc., xi, 14. 

 MYSIS, Olivier. 



As this is the only genus as yet belonging to the 

 family, the characters above given will suffice for both. 



1. NEBALIA BIPES. Tab. II, f. 1. 



CANCER BIPES, 0. Fabricius, Faun. Greenland., 246, No. 223, 1780. 

 CANCER (GAMMARELLUS) BIPES, Herbst, Krabben, ii, 111, No. 56, 



t. 34, f. 7, 1796. 

 NEBALIA HERBSTII, Leach, Zool. Miscell., i, 100, t. 44, 1814; Trans. 



Linn. Soc., xi, 351. 

 Desmarest, Cons. gen. Crust., 243. 

 Thompson, Zool. Research., iii, t. 11, f. 1. 

 NEBALIA GLABRA, Lamarck, An. s. Vert., v, 345. 

 Bosc, Man. Hist. Crust., ii, 83. 

 NEBALIA CILIATA, Lamarck, An. s. Vert., v. 3 15. 



Bosc, Man. Hist. Nat. Crust., ii, 84, t. 13, 



bis, f. 3. 



NEBALIA MONTAGUI, Thompson, Zool. Research., iii, t. 11, f. 2. 

 MONOCULUS ROSTRATUS, Montar/H, Trans. Linn. Soc., xi, 14, t. 2, 

 f. 5, 1807. 



Character. Body ovate, of a pale yellow colour, with 

 a darker longitudinal line along each side ; antennae long, 

 the inferior pair as long as the body, and sctiferous ; 

 beak of carapace sharp-pointed and moveable ; natatorial 

 feet of moderate length, and sctiferous; caudal appendages 



