128 BRITISH ENTOMOSTRACA. 



Hab. Pond near Isleworth ; ditch near Richmond ; 

 June, July, August, and September, but rare, and confined 

 apparently to small patches. Pond near Bexley Heath, 

 July. Ornamental water in Regent's Park, July; 

 T. Rupert Jones, Esq. 



Genus 3 CAMPTOCERCUS.* 



LYNCEUS, Muller, ct auctorum. 



CAMPTOCERCUS, Baird, Ann. and Mag. Nat. Hist., ii; Trans. Benv. Nat. 

 Club, ii. 



Character. Ovoid-shaped. Abdomen very long, 

 slender, and extremely flexible ; much serrated. Beak 

 blunt, slightly curved downwards. 



1. CAMPTOCERCUS MACROURUS. Tab. XVI, fig. 9. 



LYNCEUS MACROURUS, Mi'dler, Zool. Dan. Prod., 2397, 1776 ; 



Entomost., t. 10, f. 1-3. 

 Latreille, Hist. Nat. Crust., 207- 

 M. Edwards, Hist. Nat. Crust., iii, 388. 

 MONOCULUS MACROURUS, Gmelin, Syst. Nat., 3008, No. 65. 



Manuel, Enc. meth.,vii, 733, No. 65, t. 268, 



f. 26, 27. 



Fabricitts, Ent. Syst., ii, 499. 



CAMPTOCERCUS MACROURUS, Baird, Aim. and Mag Nat. Hist, ii, 91,t. 3, 



f.5, 6,18-13; Trans. Ber. Nat. Cl.,ii, 150. 



Of an ovoid shape. Shell pellucid and whitish, finely 

 striated or ribbed longitudinally, slightly sinuated and 

 ciliated on anterior margin. Beak rounded, and rather 

 blunt. Eye small, but areolar, accompanying black spot 

 nearly as large as the eye. 



Superior antennae rather long and slender, termi- 

 nating setee long also. Inferior antennae or rami short. 

 Anterior branch with four long filaments and one short ; 

 one long, from second articulation ; three long and one 



* Ko^Trroc, llrxiblr ; and KV^KOI;. a fail. 



